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Population & demographics
All demographic data for Montalto di Castro: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Montalto di Castro.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Montalto di Castro.
Montalto di Castro is a medium-sized municipality in the province of Viterbo, Lazio region. With a population of 8679 inhabitants and a density of 46 per km², it covers an area of 190.4 km². The average declared income is 21.173 €.
Montalto di Castro in numbers: the analysis
For 2050 the projections point to an essentially unchanged population: about 8,315 inhabitants.
The average municipality in the province of Viterbo has about 5,130 residents: Montalto di Castro has 1.7 times as many.
Among the 60 municipalities of the province of Viterbo, Montalto di Castro ranks 8 by population.
Montalto di Castro has grown substantially since 1951: from 3,411 inhabitants then to 8,679 in 2026, an increase of 154.4%.
The ageing index is one of the starkest signals: in Montalto di Castro there are 258 residents over 65 for every 100 under 14, well above the national average.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 8788 |
| 2020 | 8785 |
| 2021 | 8770 |
| 2022 | 8795 |
| 2023 | 8721 |
| 2024 | 8689 |
| 2025 | 8671 |
| 2026 | 8679 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 4327 | 49.9% |
| Women | 4352 | 50.1% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 51 |
| 2022 | 43 |
| 2023 | 51 |
| 2024 | 57 |
| 2025 | 42 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 3411 |
| 1961 | 6105 |
| 1971 | 6176 |
| 1981 | 6604 |
| 1991 | 7063 |
| 2001 | 7653 |
| 2011 | 8770 |
| 2019 | 8788 |
| 2020 | 8785 |
| 2021 | 8770 |
| 2022 | 8795 |
| 2023 | 8721 |
| 2024 | 8689 |
| 2025 | 8671 |
| 2026 | 8679 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 7568 | 43.6% |
| Married | 7650 | 44.1% |
| Divorced | 772 | 4.5% |
| Widowed | 1352 | 7.8% |
School-Age Population (2026)
Total 0-18 years: 1232
| Valore | |
|---|---|
| Nido (0-2) | 142 |
| Infanzia (3-5) | 142 |
| Primaria (6-10) | 302 |
| Medie (11-13) | 210 |
| Superiori (14-18) | 436 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Montalto di Castro population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/montalto-di-castro-056035" title="Population pyramid of Montalto di Castro — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/montalto-di-castro-056035" alt="Population pyramid of Montalto di Castro — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>