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Population & demographics
All demographic data for Acerno: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Acerno.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Acerno.
Acerno is a small municipality in the province of Salerno, Campania region. With a population of 2418 inhabitants and a density of 34 per km², it covers an area of 71.8 km². The average declared income is 13.301 €.
Acerno in numbers: the analysis
The generational balance is in line with the norm: the ageing index of Acerno is 242 (over-65s per 100 under-14s).
Demographic projections to 2050 estimate about 1,728 inhabitants for Acerno: an expected decline of 28.5% from today.
Compared with the provincial average of Salerno (about 6,666 residents per municipality), Acerno is a markedly smaller centre.
Among the 158 municipalities of the province of Salerno, Acerno ranks 73 by population.
The census record tells a story of long decline: in 1951 Acerno had 3,197 inhabitants; today (2026) it has 2,418 — 24.4% fewer.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 2667 |
| 2020 | 2607 |
| 2021 | 2533 |
| 2022 | 2500 |
| 2023 | 2549 |
| 2024 | 2517 |
| 2025 | 2469 |
| 2026 | 2418 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1229 | 50.8% |
| Women | 1189 | 49.2% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 11 |
| 2022 | 14 |
| 2023 | 17 |
| 2024 | 10 |
| 2025 | 12 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 3197 |
| 1961 | 3337 |
| 1971 | 3116 |
| 1981 | 2930 |
| 1991 | 3185 |
| 2001 | 3013 |
| 2011 | 2872 |
| 2019 | 2667 |
| 2020 | 2607 |
| 2021 | 2533 |
| 2022 | 2500 |
| 2023 | 2549 |
| 2024 | 2517 |
| 2025 | 2469 |
| 2026 | 2418 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 2224 | 45.0% |
| Married | 2224 | 45.0% |
| Divorced | 86 | 1.7% |
| Widowed | 404 | 8.2% |
School-Age Population (2026)
Total 0-18 years: 325
| Valore | |
|---|---|
| Nido (0-2) | 38 |
| Infanzia (3-5) | 47 |
| Primaria (6-10) | 72 |
| Medie (11-13) | 54 |
| Superiori (14-18) | 114 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Acerno population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/acerno-065001" title="Population pyramid of Acerno — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/acerno-065001" alt="Population pyramid of Acerno — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>