Castelletto Merli: 445 inhabitants (2026)
ISTAT Code: 006050
45.0752°N, 8.2406°E
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Population & demographics
All demographic data for Castelletto Merli: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Castelletto Merli.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Castelletto Merli.
Castelletto Merli is a small municipality in the province of Alessandria, Piemonte region. With a population of 445 inhabitants and a density of 38 per km², it covers an area of 11.7 km². The average declared income is 25.019 €.
Castelletto Merli in numbers: the analysis
The ageing index is one of the starkest signals: in Castelletto Merli there are 291 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 415 inhabitants for Castelletto Merli: an expected decline of 6.7% from today.
Compared with the provincial average of Alessandria (about 2,182 residents per municipality), Castelletto Merli is a markedly smaller centre.
Among the 187 municipalities of the province of Alessandria, Castelletto Merli ranks 127 by population.
The census record tells a story of long decline: in 1951 Castelletto Merli had 1,091 inhabitants; today (2026) it has 445 — 59.2% fewer.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 454 |
| 2020 | 459 |
| 2021 | 452 |
| 2022 | 452 |
| 2023 | 455 |
| 2024 | 452 |
| 2025 | 448 |
| 2026 | 445 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 225 | 50.6% |
| Women | 220 | 49.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 2 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 1091 |
| 1961 | 950 |
| 1971 | 649 |
| 1981 | 545 |
| 1991 | 486 |
| 2001 | 470 |
| 2011 | 484 |
| 2019 | 454 |
| 2020 | 459 |
| 2021 | 452 |
| 2022 | 452 |
| 2023 | 455 |
| 2024 | 452 |
| 2025 | 448 |
| 2026 | 445 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 356 | 39.7% |
| Married | 412 | 46.0% |
| Divorced | 52 | 5.8% |
| Widowed | 76 | 8.5% |
School-Age Population (2026)
Total 0-18 years: 57
| Valore | |
|---|---|
| Nido (0-2) | 7 |
| Infanzia (3-5) | 6 |
| Primaria (6-10) | 18 |
| Medie (11-13) | 12 |
| Superiori (14-18) | 14 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Castelletto Merli population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/castelletto-merli-006050" title="Population pyramid of Castelletto Merli — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/castelletto-merli-006050" alt="Population pyramid of Castelletto Merli — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>