Population on 1 January by age, sex and NUTS 2 region in Kocaeli, Sakarya, Düzce, Bolu, Yalova
Kocaeli, Sakarya, Düzce, Bolu, Yalova: Population on 1 January by age, sex and NUTS 2 region was 4.29 million Number in 2025. ▲ Rising
Population on 1 January by age, sex and NUTS 2 region in Kocaeli, Sakarya, Düzce, Bolu, Yalova, 2008–2025
Source: Eurostat. Measured in Number.
Analysis
Kocaeli, Sakarya, Düzce, Bolu, Yalova recorded 4.29 million Number for population on 1 january by age, sex and nuts 2 region in 2025. That is the highest value across all 18 years on record.
Compared with earlier readings it is up 1.1% on the previous year and up 21.7% over ten years.
Over the whole period, population on 1 january by age, sex and nuts 2 region in Kocaeli, Sakarya, Düzce, Bolu, Yalova peaked at 4.29 million Number in 2025 and was at its lowest, 3.05 million Number, in 2008.
That places Kocaeli, Sakarya, Düzce, Bolu, Yalova 78th out of 438 regions with data for 2025, putting it in the top quarter.
The long-run direction has been consistently rising across the 18 years of available data.
Population on 1 January by age, sex and NUTS 2 region in Kocaeli, Sakarya, Düzce, Bolu, Yalova, year by year
| Year | Number | Change |
|---|---|---|
| 2008 | 3.05 million Number | — |
| 2009 | 3.14 million Number | +2.9% |
| 2010 | 3.19 million Number | +1.8% |
| 2011 | 3.25 million Number | +1.7% |
| 2012 | 3.32 million Number | +2.1% |
| 2013 | 3.38 million Number | +1.8% |
| 2014 | 3.45 million Number | +2.1% |
| 2015 | 3.52 million Number | +2.1% |
| 2016 | 3.62 million Number | +2.7% |
| 2017 | 3.72 million Number | +2.8% |
| 2018 | 3.81 million Number | +2.3% |
| 2019 | 3.88 million Number | +1.9% |
| 2020 | 3.96 million Number | +2.1% |
| 2021 | 4.03 million Number | +1.6% |
| 2022 | 4.11 million Number | +2.0% |
| 2023 | 4.18 million Number | +1.8% |
| 2024 | 4.24 million Number | +1.4% |
| 2025 | 4.29 million Number | +1.1% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 3.09 million Number | 3.05 million Number | 3.14 million Number | 2 |
| 2010s | 3.51 million Number | 3.19 million Number | 3.88 million Number | 10 |
| 2020s | 4.13 million Number | 3.96 million Number | 4.29 million Number | 6 |
More population data for Kocaeli, Sakarya, Düzce, Bolu, Yalova
- Population on 1 January by age group, sex and NUTS 2 region 4.29 million Number (2025)
- Animal populations by NUTS 2 region 528.7 Thousand heads (animals) (2025)
- Live births (total) by NUTS 3 region 44,865 Number (2024)
- Population density by NUTS 3 region 212.1 Persons per square kilometre (2024)
- Population on 1 January by broad age group, sex and NUTS 3 region 4.29 million Number (2025)
- Live births by mother's age and NUTS 2 region 44,865 Number (2024)
- Fertility rates by age and NUTS 2 region 1.41 Number (2024)
- Population in private households by educational attainment level and 3,224 Thousand persons (2025)
- Population in private households by educational attainment level and 16.1% (2025)
- Population change - Demographic balance and crude rates at regional 26,369 (2024)
Frequently asked questions
- What is population on 1 january by age, sex and nuts 2 region in Kocaeli, Sakarya, Düzce, Bolu, Yalova?
- Population on 1 january by age, sex and nuts 2 region in Kocaeli, Sakarya, Düzce, Bolu, Yalova was 4.29 million Number in 2025, according to Eurostat.
- What is the highest population on 1 january by age, sex and nuts 2 region recorded in Kocaeli, Sakarya, Düzce, Bolu, Yalova?
- The highest recorded value was 4.29 million Number in 2025.
- What is the lowest population on 1 january by age, sex and nuts 2 region recorded in Kocaeli, Sakarya, Düzce, Bolu, Yalova?
- The lowest recorded value was 3.05 million Number in 2008.
- How does Kocaeli, Sakarya, Düzce, Bolu, Yalova rank for population on 1 january by age, sex and nuts 2 region?
- Kocaeli, Sakarya, Düzce, Bolu, Yalova ranks 78th out of 438 regions with data for 2025.
- Is population on 1 january by age, sex and nuts 2 region rising or falling in Kocaeli, Sakarya, Düzce, Bolu, Yalova?
- Over the last ten years it is up 21.7%. The long-run trend across the full record is rising.
- Where does this Kocaeli, Sakarya, Düzce, Bolu, Yalova data come from?
- The figures come from Eurostat, published as part of Population on 1 January by age, sex and NUTS 2 region. Statizoid updates them automatically from the source API.
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