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Population & demographics
All demographic data for Sommo: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Sommo.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Sommo.
Sommo is a small municipality in the province of Pavia, Lombardia region. With a population of 1117 inhabitants and a density of 74 per km², it covers an area of 15.1 km². The average declared income is 27.243 €.
Sommo in numbers: the analysis
The ageing index is one of the starkest signals: in Sommo there are 252 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 999 inhabitants for Sommo: an expected decline of 10.6% from today.
Compared with the provincial average of Pavia (about 2,951 residents per municipality), Sommo is a markedly smaller centre.
Among the 185 municipalities of the province of Pavia, Sommo ranks 91 by population.
The census record tells a story of long decline: in 1951 Sommo had 1,520 inhabitants; today (2026) it has 1,117 — 26.5% fewer.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 1154 |
| 2020 | 1163 |
| 2021 | 1152 |
| 2022 | 1145 |
| 2023 | 1140 |
| 2024 | 1142 |
| 2025 | 1136 |
| 2026 | 1117 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 572 | 51.2% |
| Women | 545 | 48.8% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 6 |
| 2022 | 8 |
| 2023 | 7 |
| 2024 | 3 |
| 2025 | 1 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 1520 |
| 1961 | 1258 |
| 1971 | 964 |
| 1981 | 930 |
| 1991 | 917 |
| 2001 | 1034 |
| 2011 | 1146 |
| 2019 | 1154 |
| 2020 | 1163 |
| 2021 | 1152 |
| 2022 | 1145 |
| 2023 | 1140 |
| 2024 | 1142 |
| 2025 | 1136 |
| 2026 | 1117 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 926 | 40.8% |
| Married | 1076 | 47.4% |
| Divorced | 132 | 5.8% |
| Widowed | 138 | 6.1% |
School-Age Population (2026)
Total 0-18 years: 153
| Valore | |
|---|---|
| Nido (0-2) | 8 |
| Infanzia (3-5) | 19 |
| Primaria (6-10) | 44 |
| Medie (11-13) | 26 |
| Superiori (14-18) | 56 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Sommo population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/sommo-018151" title="Population pyramid of Sommo — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/sommo-018151" alt="Population pyramid of Sommo — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>