Members
With over 190 member municipalities, Marmara Municipalities Union which is located in Istanbul, has members in 11 provinces, 6 of which are metropolitan.
| Mayor | Ahmet Akın |
| Political Party | CHP |
| Population (2025) | 1.284.517 |
| Telephone | (266)2391510 |
| Website | http://www.balikesir.bel.tr |
| Mayor | Hakan Şehirli |
| Political Party | CHP |
| Population (2025) | 188858 |
| Telephone | (266) 241 00 10 |
| Website | http://www.altieylul.bel.tr |
| Mayor | Mesut Ergin |
| Political Party | CHP |
| Population (2025) | 75815 |
| Telephone | 0266 312 10 21 |
| Website | http://www.ayvalik.bel.tr/ |
| Mayor | Orhan Gaga |
| Political Party | CHP |
| Population (2025) | 12296 |
| Telephone | 0266 486 11 64 |
| Website | http://www.balya.bel.tr |
| Mayor | Dursun Mirza |
| Political Party | CHP |
| Population (2025) | 169476 |
| Telephone | 0266 711 11 11 |
| Website | https://www.bandirma.bel.tr/ |
| Mayor | Ramazan Bahçavan |
| Political Party | AK PARTİ |
| Population (2025) | 32168 |
| Telephone | 0266 662 36 62 |
| Website | http://www.dursunbey.bel.tr |
| Mayor | Mehmet Ertaş |
| Political Party | CHP |
| Population (2025) | 176251 |
| Telephone | 0266 374 44 44 |
| Website | http://www.edremit.bel.tr |
| Mayor | Burhan Karışık |
| Political Party | CHP |
| Population (2025) | 32080 |
| Telephone | 0266 835 10 50 |
| Website | http://www.erdek-bld.gov.tr |
| Mayor | Melih Bağcı |
| Political Party | CHP |
| Population (2025) | 19020 |
| Telephone | 0266 357 10 53 |
| Website | https://www.gomec.bel.tr/ |
| Mayor | İbrahim Palaz |
| Political Party | CHP |
| Population (2025) | 75730 |
| Telephone | 0266 762 18 45 |
| Website | http://www.balikesirgonen.bel.tr/ |
| Mayor | Emin Ersoy |
| Political Party | AK PARTİ |
| Population (2025) | 28152 |
| Telephone | 0266 432 10 35 |
| Website | https://www.havran.bel.tr/ |
| Mayor | Önder Lapanta |
| Political Party | İYİ PARTİ |
| Population (2025) | 31295 |
| Telephone | 0266 456 10 04 |
| Website | http://www.ivrindi.bel.tr |
| Mayor | Mesut Akbıyık |
| Political Party | CHP |
| Population (2025) | 189444 |
| Telephone | 0266 243 04 00 |
| Website | http://www.karesi.bel.tr |
| Mayor | İsmail Cankul |
| Political Party | AK PARTİ |
| Population (2025) | 21386 |
| Telephone | 0266 576 10 08 |
| Website | http://www.kepsut.bel.tr |
| Mayor | Ahmet Duru |
| Political Party | CHP |
| Population (2025) | 17650 |
| Telephone | 0266 818 10 12 |
| Website | http://www.manyas.bel.tr/ |
| Mayor | Aydın Dinçer |
| Political Party | CHP |
| Population (2025) | 11827 |
| Telephone | 0266 885 54 89 |
| Website | https://www.marmara.bel.tr/ |
| Mayor | Ali Koyuncu |
| Political Party | CHP |
| Population (2025) | 16266 |
| Telephone | 0266 552 10 08 |
| Website | http://www.savastepe.bel.tr |
| Mayor | Serkan Sak |
| Political Party | CHP |
| Population (2025) | 31482 |
| Telephone | 0266 516 11 24 |
| Website | http://www.sindirgi.bel.tr |
| Mayor | Hakan Yıldırım Semizel |
| Political Party | CHP |
| Population (2025) | 37676 |
| Telephone | 0266 865 19 10 |
| Website | http://www.susurluk.bel.tr/ |
| Mayor | Melek Mızrak Subaşı |
| Political Party | CHP |
| Population (2025) | 71594 |
| Telephone | (228) 444 88 58 |
| Website | http://www.bilecik.bel.tr |
| Mayor | Aykut Dilsiz |
| Political Party | CHP |
| Population (2025) | 2035 |
| Telephone | (228) 283 80 05 |
| Website | http://www.bayirkoy.bel.tr |
| Mayor | Mehmet Talat Bakkalcıoğlu |
| Political Party | CHP |
| Population (2025) | 75046 |
| Telephone | (228) 314 67 00 |
| Website | https://www.bozuyuk.bel.tr/ |
| Mayor | Nihal Arslan |
| Political Party | AK PARTİ |
| Population (2025) | 914 |
| Telephone | (228) 371 22 52 |
| Website | http://www.inhisar.bel.tr/ |
| Mayor | Bekir Torun |
| Political Party | İYİ PARTİ |
| Population (2025) | 16951 |
| Telephone | (228 )461 41 31 |
| Website | https://www.osmaneli.bel.tr/ |
| Mayor | Zekiye Tekin |
| Political Party | AK PARTİ |
| Population (2025) | 6008 |
| Telephone | (228) 381 20 05 |
| Website | https://pazaryeri.bel.tr/ |
| Mayor | Ferhat Durgut |
| Political Party | MHP |
| Population (2025) | 14098 |
| Telephone | (228) 361 32 76 |
| Website | http://www.sogut.bel.tr/ |
| Mayor | Hüseyin Ocak |
| Political Party | MHP |
| Population (2023) | 3151 |
| Telephone | (228) 233 14 15 |
| Website | http://www.vezirhan.bel.tr/ |
| Mayor | İlhan Özden |
| Political Party | MHP |
| Population (2023) | 1062 |
| Telephone | (228) 431 20 27 |
| Website | https://yenipazar.bel.tr/ |
| Mayor | Hayri Suer |
| Political Party | AK PARTİ |
| Population (2023) | 9.444 |
| Telephone | (228) 411 38 34 |
| Website | https://golpazari.bel.tr/ |
| Mayor | Alper Taban |
| Political Party | AK PARTİ |
| Population (2025) | 306004 |
| Telephone | 0224 715 10 10 |
| Website | http://www.inegol.bel.tr |
| Mayor | Bekir Aydın |
| Political Party | AK PARTİ |
| Population (2025) | 81997 |
| Telephone | 0224 573 38 00 |
| Website | http://www.orhangazi.bel.tr |
| Mayor | Mustafa Bozbey |
| Political Party | CHP |
| Population (2025) | 3263011 |
| Telephone | 0224 444 16 00 |
| Website | http://www.bursa.bel.tr |
| Mayor | Kamil Turhan |
| Political Party | AK PARTİ |
| Population (2025) | 9148 |
| Telephone | 0224 841 21 42 |
| Website | http://www.buyukorhan.bel.tr |
| Mayor | Şükrü Deviren |
| Political Party | CHP |
| Population (2025) | 124400 |
| Telephone | 0224 513 45 21 |
| Website | http://www.gemlik.bel.tr |
| Mayor | Mustafa Işık |
| Political Party | AK PARTİ |
| Population (2025) | 105799 |
| Telephone | 0224 444 36 16 |
| Website | http://www.gursu.bel.tr/ |
| Mayor | Haşim Ali Arıkan |
| Political Party | CHP |
| Population (2025) | 6089 |
| Telephone | 0224 881 20 20 |
| Website | http://www.harmancik.bel.tr/_belediyemiz/ |
| Mayor | Kağan Mehmet Usta |
| Political Party | AK PARTİ |
| Population (2025) | 45510 |
| Telephone | 0224 757 10 10 |
| Website | http://www.iznik.bel.tr |
| Mayor | Fatih Karabatı |
| Political Party | AK PARTİ |
| Population (2025) | 86543 |
| Telephone | 0224 676 86 40 |
| Website | http://www.karacabey.bel.tr |
| Mayor | Ali Doğru |
| Political Party | AK PARTİ |
| Population (2025) | 10939 |
| Telephone | 0224 861 20 52 |
| Website | http://www.keles.bel.tr |
| Mayor | Ferhat Erol |
| Political Party | AK PARTİ |
| Population (2025) | 77374 |
| Telephone | 0224 372 10 01 |
| Website | https://www.kestel.bel.tr/ |
| Mayor | Deniz Dalgıç |
| Political Party | CHP |
| Population (2025) | 112225 |
| Telephone | 0224 444 89 22 |
| Website | http://www.mudanya.bel.tr |
| Mayor | Şükrü Erdem |
| Political Party | CHP |
| Population (2025) | 103652 |
| Telephone | 0224 444 38 15 |
| Website | http://www.mustafakemalpasa.bel.tr |
| Mayor | Şadi Özdemir |
| Political Party | CHP |
| Population (2025) | 578059 |
| Telephone | 0224 444 16 03 |
| Website | http://www.nilufer.bel.tr |
| Mayor | Ali Osman Tayır |
| Political Party | AK PARTİ |
| Population (2025) | 18963 |
| Telephone | 0224 817 14 30 |
| Website | http://www.orhaneli.bel.tr |
| Mayor | Erkan Aydın |
| Political Party | CHP |
| Population (2025) | 886111 |
| Telephone | 0224 270 70 00 |
| Website | http://www.osmangazi.bel.tr |
| Mayor | Ercan Özel |
| Political Party | İYİ PARTİ |
| Population (2025) | 55609 |
| Telephone | 0224 773 00 16 |
| Website | http://www.bursa-yenisehir.bel.tr |
| Mayor | Oktay Yılmaz |
| Political Party | AK PARTİ |
| Population (2025) | 654589 |
| Telephone | 0224 444 16 02 |
| Website | http://www.yildirim.bel.tr |
| Mayor | Hasan Cem Atılgan |
| Political Party | CHP |
| Population (2025) | 15923 |
| Telephone | 0286 773 10 16 |
| Website | http://www.bayramic.bel.tr |
| Mayor | Harun Arslan |
| Political Party | CHP |
| Population (2025) | 30559 |
| Telephone | 0286 416 60 90 |
| Website | https://www.can.bel.tr |
| Mayor | Muharrem Erkek |
| Political Party | CHP |
| Population (2025) | 146111 |
| Telephone | 0286 444 17 17 |
| Website | http://www.canakkale.bel.tr |
| Mayor | Mesut Bayram |
| Political Party | CHP |
| Population (2025) | 11085 |
| Telephone | 0286 712 18 93 |
| Website | http://www.canakkaleayvacik.bel.tr |
| Mayor | Alper Şen |
| Political Party | CHP |
| Population (2023) | 59819 |
| Telephone | 0286 315 00 00 |
| Website | http://www.biga.bel.tr |
| Mayor | Yahya Göztepe |
| Political Party | CHP |
| Population (2025) | 3384 |
| Telephone | 0286 697 80 81 |
| Website | http://www.bozcaada.bel.tr |
| Mayor | Metin Semerci |
| Political Party | CHP |
| Population (2025) | 4235 |
| Telephone | 0286 532 50 02 |
| Website | http://www.canakkale-cardak.bel.tr |
| Mayor | Saim Zileli |
| Political Party | CHP |
| Population (2025) | 5840 |
| Telephone | 0286 814 12 42 |
| Website | http://www.eceabat.bel.tr/ |
| Mayor | Güray Yüksel |
| Political Party | AK PARTİ |
| Population (2025) | 15836 |
| Telephone | 0286 618 52 30 |
| Website | http://www.ezine.bel.tr/ |
| Mayor | Ali Kamil Soyuak |
| Political Party | AK PARTİ |
| Population (2025) | 33062 |
| Telephone | 0286 566 10 11 |
| Website | http://www.gelibolu.bel.tr |
| Mayor | Bülent Ecevit Atalay |
| Political Party | CHP |
| Population (2025) | 8115 |
| Telephone | 0286 887 30 52 |
| Website | http://www.gokceada.bel.tr |
| Mayor | Hasan Kırım |
| Political Party | CHP |
| Population (2025) | 2041 |
| Telephone | 0286 352 30 97 |
| Website | http://www.gumuscay.bel.tr |
| Mayor | Ahmet Elbi |
| Political Party | AK PARTİ |
| Population (2025) | 3195 |
| Telephone | 0286 354 18 00 |
| Website | http://www.karabiga.bel.tr/ |
| Mayor | Zeynep Çelik |
| Political Party | Bağımsız |
| Population (2025) | 2439 |
| Telephone | 0286 484 70 48 |
| Website | www.kalkım.bel.tr |
| Mayor | Necati Kopça |
| Political Party | CHP |
| Population (2025) | 1228 |
| Telephone | 0286 597 75 06 |
| Website | http://www.kavakkoy.bel.tr |
| Mayor | Abdülmuttalip Gürel |
| Political Party | CHP |
| Population (2025) | 10803 |
| Telephone | 0286 752 50 54 |
| Website | https://www.kucukkuyu.bel.tr/ |
| Mayor | Atilla Öztürk |
| Political Party | İYİ PARTİ |
| Population (2025) | 16807 |
| Telephone | 0286 512 10 44 |
| Website | http://www.lapseki.bel.tr |
| Mayor | Tuncay Göymen |
| Political Party | AK PARTİ |
| Population (2025) | 1745 |
| Telephone | 0286 445 40 68 |
| Website | http://www.terzialan.bel.tr |
| Mayor | Erdal Doğan |
| Political Party | CHP |
| Population (2025) | 2303 |
| Telephone | 0286 542 70 09 |
| Website | http://www.umurbey.bel.tr |
| Mayor | Veysel Acar |
| Political Party | AK PARTİ |
| Population (2025) | 8262 |
| Telephone | 0286 474 32 42 |
| Website | http://www.yenice.bel.tr |
| Mayor | Mehmet Özcan |
| Political Party | CHP |
| Population (2025) | 66483 |
| Telephone | 0284 715 11 85 |
| Website | http://www.kesan.bel.tr |
| Mayor | Filiz Gencan Akın |
| Political Party | CHP |
| Population (2023) | 183110 |
| Telephone | 0284 213 91 40 |
| Website | http://www.edirne.bel.tr |
| Mayor | Ferat Gülver |
| Political Party | AK PARTİ |
| Population (2025) | 3247 |
| Telephone | 0284 773 80 07 |
| Website | http://www.begendik.bel.tr/ |
| Mayor | Özkan Günenç |
| Political Party | CHP |
| Population (2025) | 4419 |
| Telephone | 0284 811 60 09 |
| Website | http://www.enez.bel.tr |
| Mayor | Hüseyin Özden |
| Political Party | CHP |
| Population (2025) | 8740 |
| Telephone | 0284 336 10 09 |
| Website | http://www.havsa.bel.tr |
| Mayor | Mehmet Kerman |
| Political Party | AK PARTİ |
| Population (2025) | 8485 |
| Telephone | 0284 616 10 11 |
| Website | http://www.ipsala.bel.tr |
| Mayor | Zafer Sezgin Geldi |
| Political Party | CHP |
| Population (2025) | 1655 |
| Telephone | 0284 321 41 07 |
| Website | http://www.lalapasa.bel.tr |
| Mayor | Yunus Atay |
| Political Party | AK PARTİ |
| Population (2025) | 2711 |
| Telephone | 0284 415 13 86 |
| Website | http://www.mericsubasi.bel.tr/ |
| Mayor | Göksel Tüfekçi |
| Political Party | AK PARTİ |
| Population (2025) | 1977 |
| Telephone | 0284 425 32 30 |
| Website | www.subaşı.bel.tr |
| Mayor | Mehmet Ormankıran |
| Political Party | CHP |
| Population (2025) | 3171 |
| Telephone | 0284 311 30 02 |
| Website | http://www.suloglu.bel.tr/ |
| Mayor | Ediz Martin |
| Political Party | İYİ PARTİ |
| Population (2025) | 40174 |
| Telephone | 0284 513 11 08 |
| Website | http://www.uzunkopru.bel.tr |
| Mayor | Ahmet Köprü |
| Political Party | CHP |
| Population (2025) | 2939 |
| Telephone | 0284 696 60 89 |
| Website | http://www.yenikarpuzlu.bel.tr |
| Mayor | Tamer Kıral |
| Political Party | CHP |
| Population (2025) | 2037 |
| Telephone | 0284 763 72 40 |
| Website | http://www.yenimuhacir.bel.tr |
| Mayor | Ayşegül Özdemir Ovalıoğlu |
| Political Party | CHP |
| Population (2025) | 218204 |
| Telephone | (212) 414 97 00 |
| Website | https://www.bakirkoy.bel.tr |
| Mayor | Ekrem İmamoğlu |
| Political Party | CHP |
| Population (2025) | 15754053 |
| Telephone | (212) 455 13 00 |
| Website | https://www.ibb.istanbul/ |
| Mayor | Ali Ercan Akpolat |
| Political Party | CHP |
| Population (2025) | 17489 |
| Telephone | (216) 382 33 82 |
| Website | http://www.adalar.bel.tr |
| Mayor | Mustafa Candaroğlu |
| Political Party | AK PARTİ |
| Population (2025) | 358469 |
| Telephone | (212) 444 45 97 |
| Website | http://www.arnavutkoy.bel.tr |
| Mayor | Onursal Adıgüzel |
| Political Party | CHP |
| Population (2025) | 412125 |
| Telephone | (216) 570 50 00 |
| Website | https://www.atasehir.bel.tr/ |
| Mayor | Yüksel Can |
| Political Party | CHP |
| Population (2025) | 440663 |
| Telephone | (212) 444 69 89 |
| Website | https://www.avcilar.bel.tr/ |
| Mayor | Yasin Yıldız |
| Political Party | AK PARTİ |
| Population (2025) | 707635 |
| Telephone | (212) 410 06 00 |
| Website | https://www.bagcilar.bel.tr/ |
| Mayor | Hakan Bahadır |
| Political Party | AK PARTİ |
| Population (2025) | 539035 |
| Telephone | (212) 484 38 00 |
| Website | https://www.bahcelievler.istanbul/ |
| Mayor | Yasin Kartoğlu |
| Political Party | AK PARTİ |
| Population (2025) | 536797 |
| Telephone | (212) 444 06 69 |
| Website | https://www.basaksehir.bel.tr/ |
| Mayor | İbrahim Akın |
| Political Party | AK PARTİ |
| Population (2025) | 272978 |
| Telephone | (212) 467 19 00 |
| Website | https://www.bayrampasa.bel.tr/ |
| Mayor | Ömer Rasim Şişman |
| Political Party | CHP |
| Population (2025) | 165895 |
| Telephone | (212) 319 42 42 |
| Website | https://www.besiktas.bel.tr/ |
| Mayor | Alaattin Köseler |
| Political Party | CHP |
| Population (2025) | 246833 |
| Telephone | (216) 444 66 61 |
| Website | https://www.beykoz.bel.tr/ |
| Mayor | Önder Serkan Çebi |
| Political Party | CHP |
| Population (2025) | 422988 |
| Telephone | (212) 444 09 39 |
| Website | https://www.beylikduzu.bel.tr/ |
| Mayor | Sefer Karaahmetoğlu |
| Political Party | CHP |
| Population (2025) | 215991 |
| Telephone | (212) 444 01 60 |
| Website | https://www.beyoglu.bel.tr/ |
| Mayor | Hasan Akgün |
| Political Party | CHP |
| Population (2025) | 283239 |
| Telephone | (212) 444 03 40 |
| Website | https://www.bcekmece.bel.tr/ |
| Mayor | Erhan Güzel |
| Political Party | CHP |
| Population (2025) | 81143 |
| Telephone | (212) 444 61 02 |
| Website | https://www.catalca.bel.tr/ |
| Mayor | Orhan Çerkez |
| Political Party | CHP |
| Population (2025) | 315959 |
| Telephone | (216) 600 06 00 |
| Website | https://www.cekmekoy.bel.tr/ |
| Mayor | Mehmet Tevfik Göksu |
| Political Party | AK PARTİ |
| Population (2025) | 419878 |
| Telephone | (212) 444 00 73 |
| Website | https://www.esenler.bel.tr/ |
| Mayor | Ahmet Özer |
| Political Party | CHP |
| Population (2025) | 1003905 |
| Telephone | (212) 444 04 11 |
| Website | https://www.esenyurt.bel.tr/ |
| Mayor | Mithat Bülent Özmen |
| Political Party | CHP |
| Population (2025) | 425216 |
| Telephone | (212) 444 30 00 |
| Website | https://www.eyupsultan.bel.tr/ |
| Mayor | Mehmet Ergün Turan |
| Political Party | AK PARTİ |
| Population (2025) | 351786 |
| Telephone | (212) 453 14 53 |
| Website | https://www.fatih.bel.tr/ |
| Mayor | Eray Karadeniz |
| Political Party | AK PARTİ |
| Population (2025) | 478395 |
| Telephone | (212) 444 04 67 |
| Website | https://www.gaziosmanpasa.bel.tr/ |
| Mayor | Bünyamin Demir |
| Political Party | AK PARTİ |
| Population (2025) | 251242 |
| Telephone | (212) 444 04 67 |
| Website | https://www.gungoren.bel.tr/ |
| Mayor | Mesut Kösedağı |
| Political Party | CHP |
| Population (2025) | 458573 |
| Telephone | (216) 542 50 00 |
| Website | http://www.kadikoy.bel.tr/ |
| Mayor | Mevlüt Öztekin |
| Political Party | AK PARTİ |
| Population (2025) | 446420 |
| Telephone | (212) 295 68 00 |
| Website | http://www.kagithane.istanbul/ |
| Mayor | Gökhan Yüksel |
| Political Party | CHP |
| Population (2025) | 475630 |
| Telephone | (216) 280 52 52 |
| Website | https://www.kartal.bel.tr/ |
| Mayor | Kemal Çebi |
| Political Party | CHP |
| Population (2025) | 785270 |
| Telephone | (212) 444 43 60 |
| Website | https://www.kucukcekmece.istanbul/ |
| Mayor | Esin Köymen |
| Political Party | CHP |
| Population (2025) | 525044 |
| Telephone | (216) 458 99 99 |
| Website | https://www.maltepe.bel.tr/ |
| Mayor | Ahmet Cin |
| Political Party | AK PARTİ |
| Population (2025) | 752033 |
| Telephone | (216) 444 81 80 |
| Website | https://www.pendik.bel.tr/ |
| Mayor | Alper Yeğin |
| Political Party | CHP |
| Population (2025) | 507500 |
| Telephone | (216) 622 33 33 |
| Website | http://www.sancaktepe.bel.tr/tr |
| Mayor | Mustafa Oktay Aksu |
| Political Party | CHP |
| Population (2025) | 344883 |
| Telephone | (212) 444 17 22 |
| Website | https://sariyer.bel.tr/ |
| Mayor | Bora Balcıoğlu |
| Political Party | CHP |
| Population (2025) | 240029 |
| Telephone | 212 444 20 47 |
| Website | https://www.silivri.bel.tr/ |
| Mayor | Ali Tombaş |
| Political Party | AK PARTİ |
| Population (2025) | 378908 |
| Telephone | (216) 564 13 00 |
| Website | https://www.sultanbeyli.istanbul/ |
| Mayor | Abdurrahman Dursun |
| Political Party | AK PARTİ |
| Population (2025) | 529306 |
| Telephone | (212) 444 23 32 |
| Website | https://www.sultangazi.bel.tr/ |
| Mayor | Sacit Terzi |
| Political Party | CHP |
| Population (2025) | 50090 |
| Telephone | (216) 444 74 53 |
| Website | http://www.sile.bel.tr/ |
| Mayor | Resul Emrah Şahan |
| Political Party | CHP |
| Population (2025) | 261959 |
| Telephone | (212) 708 88 88 |
| Website | https://www.sisli.bel.tr/ |
| Mayor | Eren Ali Bingöl |
| Political Party | CHP |
| Population (2025) | 313865 |
| Telephone | (216) 444 09 06 |
| Website | https://www.tuzla.bel.tr/ |
| Mayor | İsmet Yıldırım |
| Political Party | AK PARTİ |
| Population (2025) | 728913 |
| Telephone | (216) 444 98 22 |
| Website | https://www.umraniye.bel.tr/ |
| Mayor | Sinem Dedetaş |
| Political Party | CHP |
| Population (2025) | 514294 |
| Telephone | (216) 531 30 00 |
| Website | https://www.uskudar.bel.tr/ |
| Mayor | Ömer Arısoy |
| Political Party | AK PARTİ |
| Population (2025) | 275471 |
| Telephone | (212) 413 11 11 |
| Website | http://www.zeytinburnu.istanbul/ |
| Mayor | Orhan Saltık |
| Political Party | CHP |
| Population (2025) | 2081 |
| Telephone | 0288 523 28 16 |
| Website | http://www.alpullu.bel.tr |
| Mayor | Derya Bulut |
| Political Party | MHP |
| Population (2025) | 90619 |
| Telephone | 0288 214 10 45 |
| Website | http://www.kirklareli.bel.tr |
| Mayor | Mustafa Altıntaş |
| Political Party | CHP |
| Population (2025) | 3502 |
| Telephone | 0288 423 10 01 |
| Website | http://www.ahmetbey.bel.tr |
| Mayor | Fırat Yayla |
| Political Party | AK PARTİ |
| Population (2025) | 29438 |
| Telephone | 0288 512 12 36 |
| Website | http://www.babaeski-bld.gov.tr |
| Mayor | Ertuğrul Çamlıca |
| Political Party | CHP |
| Population (2025) | 6910 |
| Telephone | 0288 436 11 43 |
| Website | http://www.buyukkaristiran.bel.tr |
| Mayor | Ersan Çölgeçen |
| Political Party | AK PARTİ |
| Population (2025) | 3308 |
| Telephone | 0288 533 40 15 46 |
| Website | http://www.buyukmandira.bel.tr |
| Mayor | Mehmet Bayram |
| Political Party | MHP |
| Population (2025) | 1995 |
| Telephone | 0288 358 70 02 |
| Website | http://www.cakilli.bel.tr |
| Mayor | Recep Gün |
| Political Party | AK PARTİ |
| Population (2025) | 3629 |
| Telephone | 0288 681 66 07 |
| Website | http://www.demirkoy.bel.tr |
| Mayor | Birol Özbay |
| Political Party | CHP |
| Population (2025) | 2865 |
| Telephone | 0288 443 90 01 |
| Website | http://www.evrensekiz.bel.tr |
| Mayor | Altuğ Erdem |
| Political Party | AK PARTİ |
| Population (2025) | 2560 |
| Telephone | 0288 692 21 81 |
| Website | http://www.igneada.bel.tr |
| Mayor | İlhan Arı |
| Political Party | AK PARTİ |
| Population (2025) | 2038 |
| Telephone | 0288 253 32 14 |
| Website | https://inece.bel.tr/ |
| Mayor | Dindar Seçen |
| Political Party | AK PARTİ |
| Population (2023) | 1536 |
| Telephone | 0288 543 70 01 |
| Website | http://www.karahalil.bel.tr |
| Mayor | Ufuk İn |
| Political Party | CHP |
| Population (2025) | 4592 |
| Telephone | 0288 246 11 73 |
| Website | http://www.kavakli.bel.tr |
| Mayor | Neşe Çevikbaş |
| Political Party | CHP |
| Population (2025) | 2048 |
| Telephone | 0288 645 72 35 |
| Website | http://www.kaynarca.bel.tr |
| Mayor | İsmail Özen |
| Political Party | CHP |
| Population (2025) | 2183 |
| Telephone | 0288 388 61 60 |
| Website | http://www.kiyikoy.bel.tr |
| Mayor | Murat Gerenli |
| Political Party | CHP |
| Population (2025) | 128501 |
| Telephone | 0288 417 10 73 |
| Website | http://www.luleburgaz.bel.tr/ |
| Mayor | Gündüz Hoşgör |
| Political Party | AK PARTİ |
| Population (2025) | 1702 |
| Telephone | 0288 714 11 40 |
| Website | http://www.pehlivankoy.bel.tr |
| Mayor | İhsan Talay |
| Political Party | AK PARTİ |
| Population (2025) | 10946 |
| Telephone | 0288 288 61 51-027 |
| Website | http://www.pinarhisar.bel.tr |
| Mayor | Halil Çallı |
| Political Party | CHP |
| Population (2025) | 2203 |
| Telephone | 0288 273 11 22 |
| Website | http://www.uskup.bel.tr |
| Mayor | Ercan Özalp |
| Political Party | CHP |
| Population (2025) | 15386 |
| Telephone | 0288 318 10 21 |
| Website | http://www.vize.bel.tr |
| Mayor | Tahir Büyükakın |
| Political Party | AK PARTİ |
| Population (2025) | 2161171 |
| Telephone | 0262 318 10 00 |
| Website | http://www.kocaeli.bel.tr/ |
| Mayor | Bünyamin Çiftçi |
| Political Party | AK PARTİ |
| Population (2025) | 162262 |
| Telephone | 0262 743 79 09 |
| Website | http://www.cayirova.bel.tr/ |
| Mayor | Muzaffer Bıyık |
| Political Party | AK PARTİ |
| Population (2025) | 235632 |
| Telephone | 0262 444 74 41 |
| Website | https://www.darica.bel.tr/ |
| Mayor | Sertif Gökçe |
| Political Party | CHP |
| Population (2025) | 147892 |
| Telephone | 0262 239 40 15 |
| Website | http://www.derince.bel.tr/ |
| Mayor | Ramazan Ömeroğlu |
| Political Party | AK PARTİ |
| Population (2025) | 55355 |
| Telephone | 0262 754 88 88 |
| Website | http://www.dilovasi.bel.tr/ |
| Mayor | Zinnur Büyükgöz |
| Political Party | AK PARTİ |
| Population (2025) | 414960 |
| Telephone | 0262 642 04 30 |
| Website | https://www.gebze.bel.tr/ |
| Mayor | Ali Yıldırım Sezer |
| Political Party | AK PARTİ |
| Population (2025) | 181227 |
| Telephone | 0262 414 45 85 |
| Website | https://www.golcuk.bel.tr/ |
| Mayor | Fatma Kaplan Hürriyet |
| Political Party | CHP |
| Population (2025) | 381254 |
| Telephone | 0262 318 00 00 |
| Website | http://www.izmit.bel.tr/ |
| Mayor | Erol Ölmez |
| Political Party | AK PARTİ |
| Population (2025) | 54260 |
| Telephone | 0262 551 32 10 |
| Website | https://www.kandira.bel.tr/ |
| Mayor | Ahmet Çalık |
| Political Party | CHP |
| Population (2025) | 59488 |
| Telephone | 0262 452 10 25 |
| Website | https://www.karamursel.bel.tr/ |
| Mayor | Muhammet Mustafa Kocaman |
| Political Party | AK PARTİ |
| Population (2025) | 154377 |
| Telephone | 0262 316 68 00 |
| Website | https://www.kartepe.bel.tr/ |
| Mayor | Şener Söğüt |
| Political Party | AK PARTİ |
| Population (2025) | 183077 |
| Telephone | 0262 528 23 02 |
| Website | http://www.korfez.bel.tr/ |
| Mayor | Yusuf Alemdar |
| Political Party | AK PARTİ |
| Population (2025) | 1123693 |
| Telephone | 0264 444 40 54 |
| Website | http://www.sakarya.bel.tr |
| Mayor | Mutlu Işıksu |
| Political Party | AK PARTİ |
| Population (2025) | 284006 |
| Telephone | 0264 277 54 65 |
| Website | http://www.adapazari.bel.tr |
| Mayor | Bilal Soykan |
| Political Party | AK PARTİ |
| Population (2025) | 99561 |
| Telephone | 0264 418 14 31 |
| Website | http://www.akyazi.bel.tr |
| Mayor | İsmail Karakullukçu |
| Political Party | AK PARTİ |
| Population (2025) | 55589 |
| Telephone | 0264 229 10 10 |
| Website | https://www.arifiye.bel.tr/ |
| Mayor | Şenol Dinç |
| Political Party | BÜYÜK BİRLİK |
| Population (2025) | 92549 |
| Telephone | 0264 241 48 00 |
| Website | http://www.erenler.bel.tr |
| Mayor | Mehmet Ata |
| Political Party | İYİ PARTİ |
| Population (2025) | 36015 |
| Telephone | 0264 781 70 11 |
| Website | http://www.ferizli.bel.tr |
| Mayor | Selçuk Yıldız |
| Political Party | YRP |
| Population (2025) | 51708 |
| Telephone | 0264 517 52 40 |
| Website | http://www.geyve.bel.tr |
| Mayor | Mehmet Murat Çoruhlu |
| Political Party | YRP |
| Population (2025) | 13734 |
| Telephone | 0264 471 50 33 |
| Website | http://www.karapurcek.bel.tr |
| Mayor | İshak Sarı |
| Political Party | AK PARTİ |
| Population (2025) | 75887 |
| Telephone | 0264 718 12 00 |
| Website | http://www.karasu.bel.tr |
| Mayor | Kadir Yazgan |
| Political Party | YRP |
| Population (2025) | 25440 |
| Telephone | 0264 871 20 96 |
| Website | http://sakaryakaynarca.bel.tr/ |
| Mayor | Turan Yüzücü |
| Political Party | AK PARTİ |
| Population (2025) | 24966 |
| Telephone | 0264 812 10 99 |
| Website | https://www.kocaali.bel.tr/ |
| Mayor | Fatih Akın |
| Political Party | AK PARTİ |
| Population (2025) | 31536 |
| Telephone | 0264 551 30 83 |
| Website | http://www.pamukova.bel.tr |
| Mayor | Nihat Arda Şahin |
| Political Party | CHP |
| Population (2025) | 47505 |
| Telephone | 0850 224 54 54 |
| Website | http://www.sapanca.bel.tr |
| Mayor | Osman Çelik |
| Political Party | AK PARTİ |
| Population (2025) | 168855 |
| Telephone | 0264 444 54 50 |
| Website | http://www.serdivan.bel.tr |
| Mayor | Selçuk Kurt |
| Political Party | AK PARTİ |
| Population (2025) | 15288 |
| Telephone | 0264 681 24 82 |
| Website | http://www.sogutlu.bel.tr |
| Mayor | İbrahim Pilavcı |
| Political Party | MHP |
| Population (2025) | 7064 |
| Telephone | 0264 491 20 15 |
| Website | http://www.tarakli.bel.tr/ |
| Mayor | Varol Türel |
| Political Party | CHP |
| Population (2025) | 30410 |
| Telephone | 0282 361 24 36 |
| Website | https://www.muratli.bel.tr |
| Mayor | Candan Yüceer |
| Political Party | CHP |
| Population (2025) | 1208441 |
| Telephone | 0282 153 00 00 |
| Website | http://www.tekirdag.bel.tr |
| Mayor | Vahap Akay |
| Political Party | CHP |
| Population (2025) | 223975 |
| Telephone | 0282 726 50 19 |
| Website | http://www.cerkezkoy.bel.tr |
| Mayor | Ahmet Sarıkurt |
| Political Party | CHP |
| Population (2025) | 306939 |
| Telephone | 0282 444 99 59 |
| Website | http://www.corlu.bel.tr |
| Mayor | Müge Yıldız Toprak |
| Political Party | AK PARTİ |
| Population (2025) | 68648 |
| Telephone | 0282 655 55 22 |
| Website | http://www.ergene.bel.tr |
| Mayor | Tuncer Başoğlu |
| Political Party | CHP |
| Population (2025) | 29706 |
| Telephone | 0282 315 10 49 |
| Website | http://www.hayrabolu.bel.tr |
| Mayor | Mustafa Çetin |
| Political Party | AK PARTİ |
| Population (2025) | 152509 |
| Telephone | 0282 444 80 59 |
| Website | https://www.kapakli.bel.tr |
| Mayor | Nergiz Karaağaçlı Öztürk |
| Political Party | CHP |
| Population (2025) | 50123 |
| Telephone | 0282 444 59 42 |
| Website | http://www.malkara.bel.tr/ |
| Mayor | Mustafa Onur Bozkurter |
| Political Party | CHP |
| Population (2025) | 33623 |
| Telephone | 0282 613 12 50 |
| Website | https://www.marmaraereglisi.bel.tr/ |
| Mayor | Abdül Taşyasan |
| Political Party | CHP |
| Population (2025) | 51468 |
| Telephone | 0282 768 10 05 |
| Website | http://www.saray.bel.tr |
| Mayor | Volkan Nallar |
| Political Party | CHP |
| Population (2025) | 226582 |
| Telephone | 0850 450 59 59 |
| Website | http://www.suleymanpasa.bel.tr |
| Mayor | Alpay Var |
| Political Party | CHP |
| Population (2025) | 34458 |
| Telephone | 0282 518 10 21 |
| Website | http://www.sarkoy.bel.tr |
| Mayor | Turan Canbay |
| Political Party | CHP |
| Population (2025) | 8655 |
| Telephone | 0226 463 22 23 |
| Website | http://www.subasi.bel.tr |
| Mayor | Kamil Yaman |
| Political Party | CHP |
| Population (2025) | 8195 |
| Telephone | 0226 249 51 78 |
| Website | http://www.koru.bel.tr |
| Mayor | Mehmet Gürel |
| Political Party | CHP |
| Population (2025) | 130445 |
| Telephone | 0226 811 50 00 |
| Website | http://www.yalova.bel.tr |
| Mayor | Yasemin Fazlaca |
| Political Party | CHP |
| Population (2025) | 10908 |
| Telephone | 0226 461 29 40 |
| Website | http://www.altinova.bel.tr |
| Mayor | Cengiz Arslan |
| Political Party | AK PARTİ |
| Population (2025) | 9288 |
| Telephone | 0226 531 42 05 |
| Website | http://www.armutlu.bel.tr/ |
| Mayor | Avni Kurt |
| Political Party | CHP |
| Population (2025) | 20496 |
| Telephone | 0226 245 10 04 |
| Website | http://www.cinarcik.bel.tr |
| Mayor | Adil Yele |
| Political Party | CHP |
| Population (2025) | 50641 |
| Telephone | 0226 444 89 12 |
| Website | http://www.yalovaciftlikkoy.bel.tr |
| Mayor | Mehmet Temel |
| Political Party | MHP |
| Population (2025) | 3992 |
| Telephone | 0226 243 60 21 |
| Website | http://www.esenkoy.bel.tr |
| Mayor | Yılmaz Tavşan |
| Political Party | CHP |
| Population (2025) | 11527 |
| Telephone | 0226 833 85 70 |
| Website | http://www.yalova-kadikoy.bel.tr |
| Mayor | Doğan Çitil |
| Political Party | CHP |
| Population (2025) | 7584 |
| Telephone | 0226 462 83 33 |
| Website | http://www.kaytazdere.bel.tr |
| Mayor | Hüseyin Sinan Acar |
| Political Party | AK PARTİ |
| Population (2025) | 3702 |
| Telephone | 0226 675 70 79 |
| Website | http://www.termal.bel.tr |
| Mayor | Mustafa Nurten |
| Political Party | MHP |
| Population (2025) | 4225 |
| Telephone | 0226 244 13 57 |
| Website | http://www.tesvikiye.bel.tr |