# Population (1 January) — Agglomeratie Leiden en Bollenstreek (NUTS-3 NL363)

Population (1 January) — Agglomeratie Leiden en Bollenstreek (NUTS-3 NL363) was 447,601 persons in 2025, up 0.4% from 2024.

- Source agency: Eurostat (Statistical Office of the European Union)
- Makrognosis code: `NL-363.POP.A.NSA`
- Frequency: annual
- Units: persons
- Coverage: 2014-01-01 to 2025-01-01 (12 observations)
- Page: https://makrognosis.robomacro.com/data/netherlands/population-1-january-agglomeratie-leiden-en-bollenstreek-nuts-3-nl363

## Recent data

| Period | Value |
|---|---:|
| 2025 | 447,601 persons |
| 2024 | 445,756 persons |
| 2023 | 440,312 persons |
| 2022 | 434,527 persons |
| 2021 | 431,595 persons |
| 2020 | 430,358 persons |
| 2019 | 427,217 persons |
| 2018 | 424,657 persons |
| 2017 | 421,296 persons |
| 2016 | 418,023 persons |
| 2015 | 415,106 persons |
| 2014 | 413,101 persons |

## API

```
curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
  "https://makrognosis.robomacro.com/v1/series/NL-363.POP.A.NSA"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/NL-363.POP.A.NSA",
                 headers={"X-API-Key": KEY})
obs = r.json()["observations"]
```