UpAlphabetical listing of Places in Kocaeli
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Babaköy | city | Kocaeli | Turkey | 41.01 | 30.11 | 377 | 7004 |
| Babaköy | city | Kocaeli | Turkey | 41.11 | 30.19 | 288 | 20348 |
| Bagchejik | city | Kocaeli | Turkey | 40.67 | 29.91 | 1919 | 41648 |
| Bahcecik | city | Kocaeli | Turkey | 40.67 | 29.91 | 1919 | 41648 |
| Balaban | city | Kocaeli | Turkey | 41.03 | 30.04 | 337 | 7003 |
| Balaban | city | Kocaeli | Turkey | 40.69 | 30.08 | 1692 | 61216 |
| Balca | city | Kocaeli | Turkey | 41.01 | 30.11 | 377 | 7004 |
| Balcı | city | Kocaeli | Turkey | 41.07 | 30.20 | 285 | 18907 |
| Balkancılar | city | Kocaeli | Turkey | 40.91 | 29.87 | 830 | 7003 |
| Ballar | city | Kocaeli | Turkey | 41.15 | 30.27 | 154 | 6859 |
| Balli | city | Kocaeli | Turkey | 40.80 | 29.75 | 1171 | 38089 |
| Balçık | city | Kocaeli | Turkey | 40.87 | 29.43 | 830 | 76010 |
| Balören | city | Kocaeli | Turkey | 40.84 | 30.12 | 830 | 7003 |
| Balıköyü | city | Kocaeli | Turkey | 40.80 | 29.75 | 1171 | 38089 |
| Bayrakdar | city | Kocaeli | Turkey | 40.79 | 30.09 | 203 | 41220 |
| Bayraktar | city | Kocaeli | Turkey | 40.79 | 30.09 | 203 | 41220 |
| Bağlıca | city | Kocaeli | Turkey | 40.91 | 30.19 | 830 | 7003 |
| Bağırganlı | city | Kocaeli | Turkey | 41.13 | 30.01 | 22 | 4640 |
| Bağırkanlı | city | Kocaeli | Turkey | 41.13 | 30.01 | 22 | 4640 |
| Başoğlu | city | Kocaeli | Turkey | 41.15 | 30.40 | 19 | 5485 |
| Bekirpaşa | city | Kocaeli | Turkey | 40.77 | 29.96 | 13 | 71524 |
| Belen | city | Kocaeli | Turkey | 40.81 | 29.75 | 1246 | 36034 |
| Beyazitlar | city | Kocaeli | Turkey | 40.98 | 30.11 | 830 | 7003 |
| Beyce | city | Kocaeli | Turkey | 40.99 | 30.06 | 830 | 7003 |
| Beylerbeyi | city | Kocaeli | Turkey | 41.08 | 29.99 | 144 | 7003 |
| Beylik | city | Kocaeli | Turkey | 40.63 | 29.80 | 1669 | 55427 |
| Biberci | city | Kocaeli | Turkey | 40.81 | 30.08 | 288 | 30418 |
| Biberoglu | city | Kocaeli | Turkey | 40.81 | 30.08 | 288 | 30418 |
| Bogurgen | city | Kocaeli | Turkey | 40.89 | 30.00 | 1043 | 7003 |
| Bollu | city | Kocaeli | Turkey | 41.11 | 30.06 | 75 | 5844 |
| Bollukoy | city | Kocaeli | Turkey | 41.11 | 30.06 | 75 | 5844 |
| Borçka | city | Kocaeli | Turkey | 40.67 | 29.82 | 830 | 58611 |
| Bozburun | city | Kocaeli | Turkey | 41.04 | 30.22 | 830 | 12890 |
| Bulduk | city | Kocaeli | Turkey | 40.94 | 29.96 | 1112 | 7003 |
| Bullu | city | Kocaeli | Turkey | 41.11 | 30.06 | 75 | 5844 |
| Burhan | city | Kocaeli | Turkey | 41.11 | 30.14 | 91 | 17001 |
| Buyukderbent | city | Kocaeli | Turkey | 40.71 | 30.11 | 275 | 73072 |
| Büyük Derbent | city | Kocaeli | Turkey | 40.71 | 30.11 | 275 | 73072 |
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