Population (1 January) — Kocaeli, Sakarya, Düzce, Bolu, Yalova (NUTS-2 TR42)
AnnualNot seasonally adjustedCode TR-42.POP.A.NSA
Population (1 January) — Kocaeli, Sakarya, Düzce, Bolu, Yalova (NUTS-2 TR42) was 4,287,376 persons in 2025, up 1.1% from 2024.
That is the highest reading since the series began in 2001.
Over the past ten years it has ranged from 3,522,353 persons (2015) to 4,287,376 persons (2025), averaging 3,940,742 persons.
Showing the full history (downsampled for display). Open the interactive chart to zoom and switch transforms.
Recent data
| Period | Value |
|---|---|
| 2025 | 4,287,376 persons |
| 2024 | 4,240,456 persons |
| 2023 | 4,181,440 persons |
| 2022 | 4,106,308 persons |
| 2021 | 4,026,438 persons |
| 2020 | 3,961,953 persons |
| 2019 | 3,878,979 persons |
| 2018 | 3,805,481 persons |
| 2017 | 3,719,652 persons |
| 2016 | 3,617,728 persons |
| 2015 | 3,522,353 persons |
| 2014 | 3,448,702 persons |
| 2013 | 3,376,330 persons |
| 2012 | 3,315,463 persons |
| 2011 | 3,246,147 persons |
| 2010 | 3,193,210 persons |
| 2009 | 3,136,555 persons |
| 2008 | 3,048,651 persons |
| 2007 | 2,991,414 persons |
| 2006 | 2,934,116 persons |
| 2005 | 2,878,130 persons |
| 2004 | 2,823,734 persons |
| 2003 | 2,771,438 persons |
| 2002 | 2,719,049 persons |
Last 24 observations. The full history (25 observations) is available through the API.
One guessable code, agency-direct, updated on release. Free tier available.
curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
"https://makrognosis.robomacro.com/v1/series/TR-42.POP.A.NSA"
# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/TR-42.POP.A.NSA",
headers={"X-API-Key": KEY})
obs = r.json()["observations"]About this series
| Latest observation | 2025 |
|---|---|
| First observation | 2001 |
| Observations | 25 |
| Frequency | Annual |
| Units | persons |
| Adjustment | Not seasonally adjusted |
| 10-year high | 4,287,376 persons (2025) |
| 10-year low | 3,522,353 persons (2015) |
| 10-year average | 3,940,742 persons |
| Source agency | Eurostat (Statistical Office of the European Union) |
| Makrognosis code | TR-42.POP.A.NSA |
This series is a labelled reference series (an official figure republished by an aggregator) rather than a first print from the agency itself.
Other Turkey indicators
National figure
FAQ
- Where does this data come from?
- It is collected directly from Eurostat (Statistical Office of the European Union) and is available through the Makrognosis API under the code TR-42.POP.A.NSA.
Last updated 2026-07-12. Source: Eurostat (Statistical Office of the European Union). Original title: “Population (1 January) — Kocaeli, Sakarya, Düzce, Bolu, Yalova (NUTS-2 TR42)”.