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Population & demographics
All demographic data for Fontana Liri: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Fontana Liri.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Fontana Liri.
Fontana Liri is a small municipality in the province of Frosinone, Lazio region. With a population of 2.589 inhabitants and a density of 161 per km², it covers an area of 16,1 km². The average declared income is 23.725 €.
Fontana Liri in numbers: the analysis
Demographic projections to 2050 estimate about 1,881 inhabitants for Fontana Liri: an expected decline of 27.3% from today.
Compared with the provincial average of Frosinone (about 5,058 residents per municipality), Fontana Liri is a markedly smaller centre.
Among the 91 municipalities of the province of Frosinone, Fontana Liri ranks 40 by population.
The census record tells a story of long decline: in 1951 Fontana Liri had 4,164 inhabitants; today (2026) it has 2,589 — 37.8% fewer.
The ageing index is one of the starkest signals: in Fontana Liri there are 283 residents over 65 for every 100 under 14, well above the national average.
Population Trend
Male/Female Ratio
Demographic Statistics
Demographic Indices
Denominator: annual mean population
Denominator: annual mean population
Births (recent years)
Historical Population (1951-present)
Marital Status (2025)
School-Age Population (2026)
Total 0-18 years: 373
Foreign residents
Foreign presence and top citizenships
Denominator: residents on 1 January (stock)
Embed this chart
Use the Fontana Liri population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/fontana-liri-060036" title="Population pyramid of Fontana Liri — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/fontana-liri-060036" alt="Population pyramid of Fontana Liri — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>