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Population & demographics
All demographic data for San Martino Alfieri: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for San Martino Alfieri.
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Air quality (PM2.5, PM10, NO2) and land consumption data for San Martino Alfieri.
San Martino Alfieri is a small municipality in the province of Asti, Piemonte region. With a population of 661 inhabitants and a density of 92 per km², it covers an area of 7.2 km². The average declared income is 25.319 €.
San Martino Alfieri in numbers: the analysis
For 2050 the projections point to an essentially unchanged population: about 678 inhabitants.
Compared with the provincial average of Asti (about 1,770 residents per municipality), San Martino Alfieri is a markedly smaller centre.
Among the 117 municipalities of the province of Asti, San Martino Alfieri ranks 57 by population.
The census record tells a story of long decline: in 1951 San Martino Alfieri had 1,010 inhabitants; today (2026) it has 661 — 34.6% fewer.
The ageing index is one of the starkest signals: in San Martino Alfieri there are 274 residents over 65 for every 100 under 14, well above the national average.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 656 |
| 2020 | 683 |
| 2021 | 675 |
| 2022 | 660 |
| 2023 | 677 |
| 2024 | 678 |
| 2025 | 679 |
| 2026 | 661 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 339 | 51.3% |
| Women | 322 | 48.7% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 3 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 1010 |
| 1961 | 834 |
| 1971 | 781 |
| 1981 | 719 |
| 1991 | 705 |
| 2001 | 704 |
| 2011 | 712 |
| 2019 | 656 |
| 2020 | 683 |
| 2021 | 675 |
| 2022 | 660 |
| 2023 | 677 |
| 2024 | 678 |
| 2025 | 679 |
| 2026 | 661 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 526 | 38.7% |
| Married | 662 | 48.7% |
| Divorced | 64 | 4.7% |
| Widowed | 106 | 7.8% |
School-Age Population (2026)
Total 0-18 years: 98
| Valore | |
|---|---|
| Nido (0-2) | 11 |
| Infanzia (3-5) | 14 |
| Primaria (6-10) | 24 |
| Medie (11-13) | 18 |
| Superiori (14-18) | 31 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the San Martino Alfieri population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/san-martino-alfieri-005099" title="Population pyramid of San Martino Alfieri — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/san-martino-alfieri-005099" alt="Population pyramid of San Martino Alfieri — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>