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Population & demographics
All demographic data for Ariano Irpino: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Ariano Irpino.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Ariano Irpino.
Ariano Irpino is a medium-sized municipality in the province of Avellino, Campania region. With a population of 20.657 inhabitants and a density of 111 per km², it covers an area of 185.8 km². The average declared income is 18.862 €.
Ariano Irpino in numbers: the analysis
By population, Ariano Irpino ranks no. 2 among the 118 municipalities of the province of Avellino.
The census record tells a story of long decline: in 1951 Ariano Irpino had 27,613 inhabitants; today (2026) it has 20,657 — 25.2% fewer.
The ageing index is one of the starkest signals: in Ariano Irpino there are 254 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 17,294 inhabitants for Ariano Irpino: an expected decline of 16.3% from today.
The average municipality in the province of Avellino has about 3,331 residents: Ariano Irpino has 6.2 times as many.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 21.756 |
| 2020 | 21.497 |
| 2021 | 21.422 |
| 2022 | 21.240 |
| 2023 | 21.057 |
| 2024 | 20.889 |
| 2025 | 20.741 |
| 2026 | 20.657 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 10.090 | 48.8% |
| Women | 10.567 | 51.2% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 129 |
| 2022 | 117 |
| 2023 | 134 |
| 2024 | 113 |
| 2025 | 100 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 27.613 |
| 1961 | 26.035 |
| 1971 | 22.661 |
| 1981 | 21.912 |
| 1991 | 23.040 |
| 2001 | 23.505 |
| 2011 | 22.517 |
| 2019 | 21.756 |
| 2020 | 21.497 |
| 2021 | 21.422 |
| 2022 | 21.240 |
| 2023 | 21.057 |
| 2024 | 20.889 |
| 2025 | 20.741 |
| 2026 | 20.657 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 16.428 | 39.6% |
| Married | 21.384 | 51.6% |
| Divorced | 688 | 1.7% |
| Widowed | 2974 | 7.2% |
School-Age Population (2026)
Total 0-18 years: 2953
| Valore | |
|---|---|
| Nido (0-2) | 353 |
| Infanzia (3-5) | 371 |
| Primaria (6-10) | 757 |
| Medie (11-13) | 497 |
| Superiori (14-18) | 975 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Ariano Irpino population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/ariano-irpino-064005" title="Population pyramid of Ariano Irpino — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/ariano-irpino-064005" alt="Population pyramid of Ariano Irpino — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>