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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 33 per km², it covers an area of 72,5 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
Male/Female Ratio
Demographic Statistics
Demographic Indices
Births (recent years)
Historical Population (1951-present)
Marital Status (2025)
School-Age Population (2026)
Total 0-18 years: 325
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>