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Population & demographics
All demographic data for Colle San Magno: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Colle San Magno.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Colle San Magno.
Colle San Magno is a small municipality in the province of Frosinone, Lazio region. With a population of 603 inhabitants and a density of 13 per km², it covers an area of 45.5 km². The average declared income is 16.332 €.
Colle San Magno in numbers: the analysis
Demographic projections to 2050 estimate about 449 inhabitants for Colle San Magno: an expected decline of 25.5% from today.
Compared with the provincial average of Frosinone (about 5,058 residents per municipality), Colle San Magno is a markedly smaller centre.
Among the 91 municipalities of the province of Frosinone, Colle San Magno ranks 84 by population.
The census record tells a story of long decline: in 1951 Colle San Magno had 2,129 inhabitants; today (2026) it has 603 — 71.7% fewer.
The ageing index is one of the starkest signals: in Colle San Magno there are 323 residents over 65 for every 100 under 14, well above the national average.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 657 |
| 2020 | 656 |
| 2021 | 650 |
| 2022 | 636 |
| 2023 | 631 |
| 2024 | 615 |
| 2025 | 612 |
| 2026 | 603 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 310 | 51.4% |
| Women | 293 | 48.6% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 1 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 2129 |
| 1961 | 1715 |
| 1971 | 1206 |
| 1981 | 967 |
| 1991 | 895 |
| 2001 | 819 |
| 2011 | 744 |
| 2019 | 657 |
| 2020 | 656 |
| 2021 | 650 |
| 2022 | 636 |
| 2023 | 631 |
| 2024 | 615 |
| 2025 | 612 |
| 2026 | 603 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 526 | 43.0% |
| Married | 586 | 47.9% |
| Divorced | 26 | 2.1% |
| Widowed | 86 | 7.0% |
School-Age Population (2026)
Total 0-18 years: 72
| Valore | |
|---|---|
| Nido (0-2) | 8 |
| Infanzia (3-5) | 10 |
| Primaria (6-10) | 17 |
| Medie (11-13) | 16 |
| Superiori (14-18) | 21 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Colle San Magno population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/colle-san-magno-060029" title="Population pyramid of Colle San Magno — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/colle-san-magno-060029" alt="Population pyramid of Colle San Magno — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>