Mersin's 2025 population is now estimated at 1,099,040. In 1950, the population of Mersin was 54,370. Mersin has grown by 14,220 in the last year, which represents a 1.31% annual change.These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Mersin, which typically includes Mersin's population in addition to adjacent suburban areas.
| City | 2025 Pop. ↓ | Growth |
|---|---|---|
| Istanbul | 16,236,700 | 1.18% |
| Ankara | 5,550,490 | 1.34% |
| Izmir | 3,152,090 | 1.02% |
| Bursa | 2,142,600 | 1.28% |
| Adana | 1,876,820 | 1.09% |
| Gaziantep | 1,858,710 | 1.4% |
| Konya | 1,450,150 | 1.41% |
| Antalya | 1,394,590 | 1.62% |
| Diyarbakir | 1,128,360 | 1.35% |
| Mersin | 1,099,040 | 1.31% |
| Kayseri | 1,037,250 | 1.15% |
| Eskisehir | 860,518 | 1.48% |
| Gebze | 846,841 | 1.86% |
| Samsun | 718,641 | 1.68% |
| Denizli | 712,016 | 1.54% |
| Sanliurfa | 622,137 | 1.02% |
| Kahramanmaras | 601,640 | 1.5% |
| Sakarya | 598,340 | 1.59% |
| Van | 578,392 | 1.8% |
| Malatya | 532,469 | 1.23% |
| Batman | 480,040 | 1.48% |
| Erzurum | 467,875 | 1.34% |
| Elazig | 451,906 | 1.56% |
| Manisa | 419,194 | 1.49% |
| Sivas | 401,785 | 1.48% |
| Izmit | 376,464 | 1.34% |
| Balikesir | 354,366 | 1.6% |
