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Population & demographics
All demographic data for San Pietro Avellana: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for San Pietro Avellana.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for San Pietro Avellana.
San Pietro Avellana is a small municipality in the province of Isernia, Molise region. With a population of 390 inhabitants and a density of 9 per km², it covers an area of 44.2 km². The average declared income is 16.134 €.
San Pietro Avellana in numbers: the analysis
The ageing index is one of the starkest signals: in San Pietro Avellana there are 572 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 188 inhabitants for San Pietro Avellana: an expected decline of 51.8% from today.
Compared with the provincial average of Isernia (about 1,504 residents per municipality), San Pietro Avellana is a markedly smaller centre.
Among the 52 municipalities of the province of Isernia, San Pietro Avellana ranks 42 by population.
The census record tells a story of long decline: in 1951 San Pietro Avellana had 1,688 inhabitants; today (2026) it has 390 — 76.9% fewer.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 492 |
| 2020 | 449 |
| 2021 | 439 |
| 2022 | 439 |
| 2023 | 418 |
| 2024 | 408 |
| 2025 | 396 |
| 2026 | 390 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 194 | 49.7% |
| Women | 196 | 50.3% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 2 |
| 2022 | 0 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 1688 |
| 1961 | 1503 |
| 1971 | 998 |
| 1981 | 791 |
| 1991 | 726 |
| 2001 | 662 |
| 2011 | 537 |
| 2019 | 492 |
| 2020 | 449 |
| 2021 | 439 |
| 2022 | 439 |
| 2023 | 418 |
| 2024 | 408 |
| 2025 | 396 |
| 2026 | 390 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 350 | 44.2% |
| Married | 334 | 42.2% |
| Divorced | 18 | 2.3% |
| Widowed | 90 | 11.4% |
School-Age Population (2026)
Total 0-18 years: 34
| Valore | |
|---|---|
| Nido (0-2) | 6 |
| Infanzia (3-5) | 3 |
| Primaria (6-10) | 9 |
| Medie (11-13) | 5 |
| Superiori (14-18) | 11 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the San Pietro Avellana population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/san-pietro-avellana-094043" title="Population pyramid of San Pietro Avellana — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/san-pietro-avellana-094043" alt="Population pyramid of San Pietro Avellana — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>