














Explore related data
Jump from local statistics to linked rankings and territorial pages.
Region page
Open the full profile page for Lazio.
Province page
Open the full profile page for the province of Frosinone.
Income overview
Explore the income map and the municipalities with the highest and lowest values.
Regional income ranking
View the municipalities in Lazio ranked by average income.
Provincial population ranking
View the municipalities in the province of Frosinone ranked by population.
Compare this municipality
Open the comparison page with this municipality preselected.
Population & demographics
All demographic data for Piglio: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Piglio.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Piglio.
Piglio is a small municipality in the province of Frosinone, Lazio region. With a population of 4248 inhabitants and a density of 121 per km², it covers an area of 35.2 km². The average declared income is 21.197 €.
Piglio in numbers: the analysis
Demographic projections to 2050 estimate about 3,400 inhabitants for Piglio: an expected decline of 20% from today.
Among the 91 municipalities of the province of Frosinone, Piglio ranks 27 by population.
The census record tells a story of long decline: in 1951 Piglio had 4,641 inhabitants; today (2026) it has 4,248 — 8.5% fewer.
The ageing index is one of the starkest signals: in Piglio there are 291 residents over 65 for every 100 under 14, well above the national average.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 4533 |
| 2020 | 4468 |
| 2021 | 4386 |
| 2022 | 4382 |
| 2023 | 4387 |
| 2024 | 4331 |
| 2025 | 4300 |
| 2026 | 4248 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 2100 | 49.4% |
| Women | 2148 | 50.6% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 33 |
| 2022 | 32 |
| 2023 | 10 |
| 2024 | 25 |
| 2025 | 17 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 4641 |
| 1961 | 4422 |
| 1971 | 4357 |
| 1981 | 4561 |
| 1991 | 4734 |
| 2001 | 4700 |
| 2011 | 4657 |
| 2019 | 4533 |
| 2020 | 4468 |
| 2021 | 4386 |
| 2022 | 4382 |
| 2023 | 4387 |
| 2024 | 4331 |
| 2025 | 4300 |
| 2026 | 4248 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 3422 | 39.8% |
| Married | 4304 | 50.0% |
| Divorced | 186 | 2.2% |
| Widowed | 688 | 8.0% |
School-Age Population (2026)
Total 0-18 years: 564
| Valore | |
|---|---|
| Nido (0-2) | 58 |
| Infanzia (3-5) | 94 |
| Primaria (6-10) | 142 |
| Medie (11-13) | 87 |
| Superiori (14-18) | 183 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Piglio population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/piglio-060053" title="Population pyramid of Piglio — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/piglio-060053" alt="Population pyramid of Piglio — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>