Kocaeli Metropolitan Municipality
| Mayor | Tahir Büyükakın |
| Political Party | AK PARTY |
| Population (2025) | 2161171 |
| Telephone | 0262 318 10 00 |
| Website | http://www.kocaeli.bel.tr/ |
| Mayor | Tahir Büyükakın |
| Political Party | AK PARTY |
| Population (2025) | 2161171 |
| Telephone | 0262 318 10 00 |
| Website | http://www.kocaeli.bel.tr/ |