Province·Marmara Region·Code 41
TÜİK · ADNKS 2024The most common surnames in Kocaeli 2024
As in Türkiye as a whole, the most common surname in Kocaeli is Yılmaz: 33,579 people in 2024. Kaya is second with 22,188. Yılmaz has led Kocaeli every year since 2018.1
- First place
- Yılmaz
- Surnames listed
- 301
The 30 most common surnames in Kocaeli, 2024
| Rank | Surname | People | Per 1,000 | National rank |
|---|---|---|---|---|
| 01 | Yılmaz | 33,579 | 15.8 | 1 |
| 02 | Kaya | 22,188 | 10.4 | 2 |
| 03 | Demir | 20,866 | 9.8 | 3 |
| 04 | Aydın | 20,537 | 9.6 | 9 |
| 05 | Yıldız | 19,855 | 9.3 | 5 |
| 06 | Şahin | 18,733 | 8.8 | 6 |
| 07 | Öztürk | 18,707 | 8.8 | 8 |
| 08 | Çelik | 17,995 | 8.4 | 4 |
| 09 | Yıldırım | 17,425 | 8.2 | 7 |
| 10 | Kılıç | 14,222 | 6.7 | 13 |
| 11 | Özdemir | 12,726 | 6.0 | 10 |
| 12 | Arslan | 11,652 | 5.5 | 11 |
| 13 | Doğan | 9,883 | 4.6 | 12 |
| 14 | Koç | 8,496 | 4.0 | 18 |
| 15 | Aslan | 8,215 | 3.9 | 14 |
| 16 | Kurt | 7,814 | 3.7 | 17 |
| 17 | Çetin | 7,732 | 3.6 | 15 |
| 18 | Çakır | 7,652 | 3.6 | 24 |
| 19 | Kara | 7,614 | 3.6 | 16 |
| 20 | Aktaş | 7,402 | 3.5 | 30 |
| 21 | Turan | 7,286 | 3.4 | – |
| 22 | Yavuz | 7,090 | 3.3 | 23 |
| 23 | Özcan | 7,074 | 3.3 | 25 |
| 24 | Keskin | 6,647 | 3.1 | – |
| 25 | Polat | 6,418 | 3.0 | 19 |
| 26 | Korkmaz | 6,224 | 2.9 | 21 |
| 27 | Acar | 6,154 | 2.9 | 28 |
| 28 | Özkan | 5,954 | 2.8 | 22 |
| 29 | Can | 5,947 | 2.8 | 27 |
| 30 | Şen | 5,922 | 2.8 | – |
How do these counts compare with Kocaeli’s population?
With an ADNKS population of 2,130,006 in 2024, about 15.8 in every 1,000 people in Kocaeli are called Yılmaz. The 30 listed surnames together cover 358,009 people, 16.8% of the population.1,2
Kocaeli lies in the Marmara Region. According to ADNKS its population grew by 11.7% between 2018 and 2024.2
| 2018 | 1,906,391 |
|---|---|
| 2019 | 1,953,035 |
| 2020 | 1,997,258 |
| 2021 | 2,033,441 |
| 2022 | 2,079,072 |
| 2023 | 2,102,907 |
| 2024 | 2,130,006 |
Which surname leads in the neighbouring provinces?
- BursaBursa: also Yılmaz, with 46,156 people in 2024, 1.4 times as many as in Kocaeli.
- IstanbulIstanbul: also Yılmaz, with 230,239 people in 2024, 6.9 times as many as in Kocaeli.
- SakaryaSakarya: also Yılmaz, with 17,390 people in 2024, 52% of the figure in Kocaeli.
- YalovaYalova: also Yılmaz, with 4,157 people in 2024, 12% of the figure in Kocaeli.
Neighbours: land borders derived from Natural Earth boundaries.3
Has Kocaeli’s top three changed over the years?
| Year | 1. | 2. | 3. |
|---|---|---|---|
| 2018 | Yılmaz 30,542 | Kaya 19,525 | Demir 18,389 |
| 2019 | Yılmaz 31,165 | Kaya 19,954 | Aydın 18,889 |
| 2020 | Yılmaz 31,882 | Kaya 20,571 | Aydın 19,388 |
| 2021 | Yılmaz 32,405 | Kaya 20,928 | Aydın 19,690 |
| 2022 | Yılmaz 33,087 | Kaya 21,568 | Demir 20,126 |
| 2023 | Yılmaz 33,255 | Kaya 21,785 | Demir 20,415 |
| 2024 | Yılmaz 33,579 | Kaya 22,188 | Demir 20,866 |
| 2025 | Yılmaz 33,865 | Kaya 22,694 | Demir 21,235 |
Sources
- 1Türkiye İstatistik Kurumu (TÜİK) · ADNKS, TÜİK Nüfus İsim Portalı: En çok kullanılan soyisimler (ADNKS)
- 2Türkiye İstatistik Kurumu (TÜİK) · ADNKS, TÜİK ADNKS: Cinsiyete göre nüfus, Türkiye ve 81 il
- 3Natural Earth, Natural Earth: Admin-1 boundaries