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Population & demographics
All demographic data for Viterbo: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Viterbo.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Viterbo.
Viterbo is a large municipality in the province of Viterbo, Lazio region. With a population of 66.767 inhabitants and a density of 165 per km², it covers an area of 404.2 km². The average declared income is 24.637 €.
Viterbo in numbers: the analysis
Viterbo is among Italy's major centres: the country's no. 87 municipality by population out of 7896.
Few municipalities in Lazio are larger: it ranks no. 6 by population out of 378.
Viterbo is the most populous municipality in the province of Viterbo, out of 60 in total.
Viterbo has grown substantially since 1951: from 44,132 inhabitants then to 66,767 in 2026, an increase of 51.3%.
The generational balance is in line with the norm: the ageing index of Viterbo is 227 (over-65s per 100 under-14s).
For 2050 the projections point to an essentially unchanged population: about 69,519 inhabitants.
The average municipality in the province of Viterbo has about 5,130 residents: Viterbo has 13 times as many.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 65.985 |
| 2020 | 65.911 |
| 2021 | 66.113 |
| 2022 | 65.931 |
| 2023 | 66.178 |
| 2024 | 66.188 |
| 2025 | 66.393 |
| 2026 | 66.767 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 32.702 | 49.0% |
| Women | 34.065 | 51.0% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 412 |
| 2022 | 395 |
| 2023 | 384 |
| 2024 | 368 |
| 2025 | 345 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 44.132 |
| 1961 | 50.047 |
| 1971 | 54.461 |
| 1981 | 57.632 |
| 1991 | 58.380 |
| 2001 | 59.308 |
| 2011 | 63.209 |
| 2019 | 65.985 |
| 2020 | 65.911 |
| 2021 | 66.113 |
| 2022 | 65.931 |
| 2023 | 66.178 |
| 2024 | 66.188 |
| 2025 | 66.393 |
| 2026 | 66.767 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 58.550 | 44.1% |
| Married | 57.374 | 43.2% |
| Divorced | 6846 | 5.2% |
| Widowed | 9898 | 7.5% |
School-Age Population (2026)
Total 0-18 years: 9884
| Valore | |
|---|---|
| Nido (0-2) | 1119 |
| Infanzia (3-5) | 1280 |
| Primaria (6-10) | 2572 |
| Medie (11-13) | 1772 |
| Superiori (14-18) | 3141 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Viterbo population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/viterbo-056059" title="Population pyramid of Viterbo — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/viterbo-056059" alt="Population pyramid of Viterbo — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>