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Population & demographics
All demographic data for Diano San Pietro: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Diano San Pietro.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Diano San Pietro.
Diano San Pietro is a small municipality in the province of Imperia, Liguria region. With a population of 1105 inhabitants and a density of 91 per km², it covers an area of 12.2 km². The average declared income is 19.996 €.
Diano San Pietro in numbers: the analysis
Compared with the provincial average of Imperia (about 3,180 residents per municipality), Diano San Pietro is a markedly smaller centre.
Among the 66 municipalities of the province of Imperia, Diano San Pietro ranks 23 by population.
Over the long run the population of Diano San Pietro has stayed essentially stable: 1,067 inhabitants in 1951, 1,105 in 2026 (less than 5% change).
The ageing index is one of the starkest signals: in Diano San Pietro there are 279 residents over 65 for every 100 under 14, well above the national average.
For 2050 the projections point to an essentially unchanged population: about 1,085 inhabitants.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 1111 |
| 2020 | 1097 |
| 2021 | 1066 |
| 2022 | 1098 |
| 2023 | 1080 |
| 2024 | 1094 |
| 2025 | 1091 |
| 2026 | 1105 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 538 | 48.7% |
| Women | 567 | 51.3% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 7 |
| 2022 | 7 |
| 2023 | 5 |
| 2024 | 5 |
| 2025 | 3 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 1067 |
| 1961 | 1037 |
| 1971 | 923 |
| 1981 | 963 |
| 1991 | 991 |
| 2001 | 1022 |
| 2011 | 1101 |
| 2019 | 1111 |
| 2020 | 1097 |
| 2021 | 1066 |
| 2022 | 1098 |
| 2023 | 1080 |
| 2024 | 1094 |
| 2025 | 1091 |
| 2026 | 1105 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 870 | 39.9% |
| Married | 992 | 45.5% |
| Divorced | 144 | 6.6% |
| Widowed | 176 | 8.1% |
School-Age Population (2026)
Total 0-18 years: 156
| Valore | |
|---|---|
| Nido (0-2) | 14 |
| Infanzia (3-5) | 23 |
| Primaria (6-10) | 37 |
| Medie (11-13) | 33 |
| Superiori (14-18) | 49 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Diano San Pietro population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/diano-san-pietro-008028" title="Population pyramid of Diano San Pietro — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/diano-san-pietro-008028" alt="Population pyramid of Diano San Pietro — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>