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Population & demographics
All demographic data for Costarainera: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Costarainera.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Costarainera.
Costarainera is a small municipality in the province of Imperia, Liguria region. With a population of 767 inhabitants and a density of 358 per km², it covers an area of 2.1 km². The average declared income is 25.199 €.
Costarainera in numbers: the analysis
For 2050 the projections point to an essentially unchanged population: about 767 inhabitants.
Compared with the provincial average of Imperia (about 3,180 residents per municipality), Costarainera is a markedly smaller centre.
Among the 66 municipalities of the province of Imperia, Costarainera ranks 31 by population.
Costarainera has grown substantially since 1951: from 405 inhabitants then to 767 in 2026, an increase of 89.4%.
The ageing index is one of the starkest signals: in Costarainera there are 303 residents over 65 for every 100 under 14, well above the national average.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 767 |
| 2020 | 762 |
| 2021 | 773 |
| 2022 | 777 |
| 2023 | 776 |
| 2024 | 783 |
| 2025 | 772 |
| 2026 | 767 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 377 | 49.2% |
| Women | 390 | 50.8% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 4 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 405 |
| 1961 | 595 |
| 1971 | 603 |
| 1981 | 579 |
| 1991 | 639 |
| 2001 | 718 |
| 2011 | 803 |
| 2019 | 767 |
| 2020 | 762 |
| 2021 | 773 |
| 2022 | 777 |
| 2023 | 776 |
| 2024 | 783 |
| 2025 | 772 |
| 2026 | 767 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 608 | 39.4% |
| Married | 756 | 49.0% |
| Divorced | 66 | 4.3% |
| Widowed | 114 | 7.4% |
School-Age Population (2026)
Total 0-18 years: 107
| Valore | |
|---|---|
| Nido (0-2) | 17 |
| Infanzia (3-5) | 19 |
| Primaria (6-10) | 25 |
| Medie (11-13) | 12 |
| Superiori (14-18) | 34 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Costarainera population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/costarainera-008024" title="Population pyramid of Costarainera — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/costarainera-008024" alt="Population pyramid of Costarainera — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>