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Population & demographics
All demographic data for Segni: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Segni.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Segni.
Segni is a medium-sized municipality in the province of Roma, Lazio region. With a population of 8961 inhabitants and a density of 147 per km², it covers an area of 60,9 km². The average declared income is 22.632 €.
Segni in numbers: the analysis
The generational balance is in line with the norm: the ageing index of Segni is 238 (over-65s per 100 under-14s).
Demographic projections to 2050 estimate about 8,364 inhabitants for Segni: an expected decline of 6.7% from today.
Compared with the provincial average of Roma (about 34,917 residents per municipality), Segni is a markedly smaller centre.
Among the 121 municipalities of the province of Roma, Segni ranks 45 by population.
Over the long run the population of Segni has stayed essentially stable: 9,202 inhabitants in 1951, 8,961 in 2026 (less than 5% change).
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: 1331
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Segni population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/segni-058102" title="Population pyramid of Segni — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/segni-058102" alt="Population pyramid of Segni — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>