# Population (1 January) — Viterbo (NUTS-3 ITI41)

Population (1 January) — Viterbo (NUTS-3 ITI41) was 307,405 persons in 2025, down 0.09% from 2024.
That is the lowest reading since 2008.
Over the past ten years it has ranged from 307,405 persons (2025) to 317,302 persons (2015), averaging 311,124 persons.

- Source agency: Eurostat (Statistical Office of the European Union)
- Makrognosis code: `IT-I41.POP.A.NSA`
- Frequency: annual
- Units: persons
- Coverage: 1990-01-01 to 2025-01-01 (28 observations)
- Page: https://makrognosis.robomacro.com/data/italy/population-1-january-viterbo-nuts-3-iti41

## Recent data

| Period | Value |
|---|---:|
| 2025 | 307,405 persons |
| 2024 | 307,686 persons |
| 2023 | 308,158 persons |
| 2022 | 308,737 persons |
| 2021 | 308,830 persons |
| 2020 | 309,795 persons |
| 2019 | 311,761 persons |
| 2018 | 313,010 persons |
| 2017 | 314,003 persons |
| 2016 | 315,682 persons |
| 2015 | 317,302 persons |
| 2014 | 317,858 persons |
| 2013 | 318,165 persons |
| 2012 | 316,475 persons |
| 2011 | 314,801 persons |
| 2010 | 313,270 persons |
| 2009 | 311,308 persons |
| 2008 | 306,638 persons |
| 2007 | 301,265 persons |
| 2006 | 299,353 persons |
| 2005 | 297,174 persons |
| 2004 | 294,204 persons |
| 2003 | 290,476 persons |
| 2002 | 289,055 persons |

## API

```
curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
  "https://makrognosis.robomacro.com/v1/series/IT-I41.POP.A.NSA"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/IT-I41.POP.A.NSA",
                 headers={"X-API-Key": KEY})
obs = r.json()["observations"]
```