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ISTAT Code: 085006
37.3561°N, 13.9276°E
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Population & demographics
All demographic data for Delia: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Delia.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Delia.
Delia is a small municipality in the province of Caltanissetta, Sicilia region. With a population of 3851 inhabitants and a density of 321 per km², it covers an area of 12.0 km². The average declared income is 13.675 €.
Delia in numbers: the analysis
Among the 22 municipalities of the province of Caltanissetta, Delia ranks 12 by population.
The census record tells a story of long decline: in 1951 Delia had 7,250 inhabitants; today (2026) it has 3,851 — 46.9% fewer.
The generational balance is in line with the norm: the ageing index of Delia is 198 (over-65s per 100 under-14s).
Demographic projections to 2050 estimate about 3,378 inhabitants for Delia: an expected decline of 12.3% from today.
Compared with the provincial average of Caltanissetta (about 11,068 residents per municipality), Delia is a markedly smaller centre.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 4001 |
| 2020 | 3984 |
| 2021 | 3958 |
| 2022 | 3903 |
| 2023 | 3883 |
| 2024 | 3871 |
| 2025 | 3849 |
| 2026 | 3851 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1812 | 47.1% |
| Women | 2039 | 52.9% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 24 |
| 2022 | 24 |
| 2023 | 21 |
| 2024 | 25 |
| 2025 | 26 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 7250 |
| 1961 | 6673 |
| 1971 | 5122 |
| 1981 | 4855 |
| 1991 | 4537 |
| 2001 | 4350 |
| 2011 | 4325 |
| 2019 | 4001 |
| 2020 | 3984 |
| 2021 | 3958 |
| 2022 | 3903 |
| 2023 | 3883 |
| 2024 | 3871 |
| 2025 | 3849 |
| 2026 | 3851 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 3470 | 45.1% |
| Married | 3458 | 44.9% |
| Divorced | 204 | 2.7% |
| Widowed | 566 | 7.4% |
School-Age Population (2026)
Total 0-18 years: 604
| Valore | |
|---|---|
| Nido (0-2) | 76 |
| Infanzia (3-5) | 81 |
| Primaria (6-10) | 145 |
| Medie (11-13) | 114 |
| Superiori (14-18) | 188 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Delia population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/delia-085006" title="Population pyramid of Delia — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/delia-085006" alt="Population pyramid of Delia — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>