Explore related data
Jump from local statistics to linked rankings and territorial pages.
Region page
Open the full profile page for Molise.
Province page
Open the full profile page for the province of Isernia.
Income overview
Explore the income map and the municipalities with the highest and lowest values.
Regional income ranking
View the municipalities in Molise ranked by average income.
Provincial population ranking
View the municipalities in the province of Isernia ranked by population.
Compare this municipality
Open the comparison page with this municipality preselected.
Population & demographics
All demographic data for Castelpetroso: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Castelpetroso.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Castelpetroso.
Castelpetroso is a small municipality in the province of Isernia, Molise region. With a population of 1496 inhabitants and a density of 66 per km², it covers an area of 22.8 km². The average declared income is 16.549 €.
Castelpetroso in numbers: the analysis
Demographic projections to 2050 estimate about 1,161 inhabitants for Castelpetroso: an expected decline of 22.4% from today.
Among the 52 municipalities of the province of Isernia, Castelpetroso ranks 11 by population.
The census record tells a story of long decline: in 1951 Castelpetroso had 2,829 inhabitants; today (2026) it has 1,496 — 47.1% fewer.
The ageing index is one of the starkest signals: in Castelpetroso there are 299 residents over 65 for every 100 under 14, well above the national average.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 1611 |
| 2020 | 1618 |
| 2021 | 1577 |
| 2022 | 1565 |
| 2023 | 1548 |
| 2024 | 1516 |
| 2025 | 1508 |
| 2026 | 1496 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 769 | 51.4% |
| Women | 727 | 48.6% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 12 |
| 2022 | 11 |
| 2023 | 12 |
| 2024 | 7 |
| 2025 | 5 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 2829 |
| 1961 | 2471 |
| 1971 | 1944 |
| 1981 | 1786 |
| 1991 | 1722 |
| 2001 | 1644 |
| 2011 | 1662 |
| 2019 | 1611 |
| 2020 | 1618 |
| 2021 | 1577 |
| 2022 | 1565 |
| 2023 | 1548 |
| 2024 | 1516 |
| 2025 | 1508 |
| 2026 | 1496 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 1228 | 40.7% |
| Married | 1488 | 49.3% |
| Divorced | 62 | 2.1% |
| Widowed | 238 | 7.9% |
School-Age Population (2026)
Total 0-18 years: 203
| Valore | |
|---|---|
| Nido (0-2) | 20 |
| Infanzia (3-5) | 28 |
| Primaria (6-10) | 56 |
| Medie (11-13) | 33 |
| Superiori (14-18) | 66 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Castelpetroso population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/castelpetroso-094010" title="Population pyramid of Castelpetroso — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/castelpetroso-094010" alt="Population pyramid of Castelpetroso — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>