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Population & demographics
All demographic data for Trivigliano: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Trivigliano.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Trivigliano.
Trivigliano is a small municipality in the province of Frosinone, Lazio region. With a population of 1594 inhabitants and a density of 126 per km², it covers an area of 12,6 km². The average declared income is 19.983 €.
Trivigliano in numbers: the analysis
Demographic projections to 2050 estimate about 1,443 inhabitants for Trivigliano: an expected decline of 9.5% from today.
Compared with the provincial average of Frosinone (about 5,058 residents per municipality), Trivigliano is a markedly smaller centre.
Among the 91 municipalities of the province of Frosinone, Trivigliano ranks 61 by population.
Trivigliano has grown substantially since 1951: from 1,354 inhabitants then to 1,594 in 2026, an increase of 17.7%.
The generational balance is in line with the norm: the ageing index of Trivigliano is 242 (over-65s per 100 under-14s).
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: 236
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Trivigliano population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/trivigliano-060081" title="Population pyramid of Trivigliano — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/trivigliano-060081" alt="Population pyramid of Trivigliano — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>