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Population & demographics
All demographic data for Bolsena: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Bolsena.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Bolsena.
Bolsena is a small municipality in the province of Viterbo, Lazio region. With a population of 3649 inhabitants and a density of 58 per km², it covers an area of 63.3 km². The average declared income is 19.072 €.
Bolsena in numbers: the analysis
The ageing index is one of the starkest signals: in Bolsena there are 422 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 2,951 inhabitants for Bolsena: an expected decline of 19.1% from today.
Among the 60 municipalities of the province of Viterbo, Bolsena ranks 24 by population.
The census record tells a story of long decline: in 1951 Bolsena had 4,253 inhabitants; today (2026) it has 3,649 — 14.2% fewer.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 3882 |
| 2020 | 3832 |
| 2021 | 3757 |
| 2022 | 3739 |
| 2023 | 3711 |
| 2024 | 3671 |
| 2025 | 3690 |
| 2026 | 3649 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1789 | 49.0% |
| Women | 1860 | 51.0% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 15 |
| 2022 | 16 |
| 2023 | 21 |
| 2024 | 19 |
| 2025 | 14 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 4253 |
| 1961 | 4246 |
| 1971 | 3946 |
| 1981 | 3985 |
| 1991 | 4064 |
| 2001 | 4111 |
| 2011 | 4137 |
| 2019 | 3882 |
| 2020 | 3832 |
| 2021 | 3757 |
| 2022 | 3739 |
| 2023 | 3711 |
| 2024 | 3671 |
| 2025 | 3690 |
| 2026 | 3649 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 2874 | 38.9% |
| Married | 3422 | 46.4% |
| Divorced | 372 | 5.0% |
| Widowed | 712 | 9.6% |
School-Age Population (2026)
Total 0-18 years: 389
| Valore | |
|---|---|
| Nido (0-2) | 59 |
| Infanzia (3-5) | 48 |
| Primaria (6-10) | 96 |
| Medie (11-13) | 48 |
| Superiori (14-18) | 138 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Bolsena population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/bolsena-056008" title="Population pyramid of Bolsena — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/bolsena-056008" alt="Population pyramid of Bolsena — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>