# Population (1 January) — Hajdú-Bihar (NUTS-3 HU321)

Population (1 January) — Hajdú-Bihar (NUTS-3 HU321) was 520,129 persons in 2025, down 0.08% from 2024.
That is the lowest reading since the series began in 2001.
Over the past ten years it has ranged from 520,129 persons (2025) to 535,929 persons (2015), averaging 525,889 persons.

- Source agency: Eurostat (Statistical Office of the European Union)
- Makrognosis code: `HU-321.POP.A.NSA`
- Frequency: annual
- Units: persons
- Coverage: 2001-01-01 to 2025-01-01 (25 observations)
- Page: https://makrognosis.robomacro.com/data/hungary/population-1-january-hajdu-bihar-nuts-3-hu321

## Recent data

| Period | Value |
|---|---:|
| 2025 | 520,129 persons |
| 2024 | 520,550 persons |
| 2023 | 520,656 persons |
| 2022 | 521,802 persons |
| 2021 | 523,648 persons |
| 2020 | 524,151 persons |
| 2019 | 525,661 persons |
| 2018 | 528,397 persons |
| 2017 | 530,531 persons |
| 2016 | 533,324 persons |
| 2015 | 535,929 persons |
| 2014 | 538,607 persons |
| 2013 | 540,881 persons |
| 2012 | 543,452 persons |
| 2011 | 539,674 persons |
| 2010 | 541,298 persons |
| 2009 | 542,192 persons |
| 2008 | 543,802 persons |
| 2007 | 545,641 persons |
| 2006 | 547,357 persons |
| 2005 | 549,372 persons |
| 2004 | 550,265 persons |
| 2003 | 551,837 persons |
| 2002 | 552,478 persons |

## API

```
curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
  "https://makrognosis.robomacro.com/v1/series/HU-321.POP.A.NSA"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/HU-321.POP.A.NSA",
                 headers={"X-API-Key": KEY})
obs = r.json()["observations"]
```