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Population & demographics
All demographic data for Borgo San Siro: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Borgo San Siro.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Borgo San Siro.
Borgo San Siro is a small municipality in the province of Pavia, Lombardia region. With a population of 961 inhabitants and a density of 53 per km², it covers an area of 18.0 km². The average declared income is 23.719 €.
Borgo San Siro in numbers: the analysis
The census record tells a story of long decline: in 1951 Borgo San Siro had 1,652 inhabitants; today (2026) it has 961 — 41.8% fewer.
The ageing index is one of the starkest signals: in Borgo San Siro there are 281 residents over 65 for every 100 under 14, well above the national average.
For 2050 the projections point to an essentially unchanged population: about 993 inhabitants.
Compared with the provincial average of Pavia (about 2,951 residents per municipality), Borgo San Siro is a markedly smaller centre.
Among the 185 municipalities of the province of Pavia, Borgo San Siro ranks 105 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 952 |
| 2020 | 934 |
| 2021 | 926 |
| 2022 | 953 |
| 2023 | 943 |
| 2024 | 958 |
| 2025 | 951 |
| 2026 | 961 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 485 | 50.5% |
| Women | 476 | 49.5% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 4 |
| 2022 | 7 |
| 2023 | 7 |
| 2024 | 4 |
| 2025 | 9 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 1652 |
| 1961 | 1257 |
| 1971 | 1023 |
| 1981 | 916 |
| 1991 | 880 |
| 2001 | 1023 |
| 2011 | 1035 |
| 2019 | 952 |
| 2020 | 934 |
| 2021 | 926 |
| 2022 | 953 |
| 2023 | 943 |
| 2024 | 958 |
| 2025 | 951 |
| 2026 | 961 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 788 | 41.4% |
| Married | 870 | 45.7% |
| Divorced | 90 | 4.7% |
| Widowed | 154 | 8.1% |
School-Age Population (2026)
Total 0-18 years: 132
| Valore | |
|---|---|
| Nido (0-2) | 19 |
| Infanzia (3-5) | 19 |
| Primaria (6-10) | 27 |
| Medie (11-13) | 19 |
| Superiori (14-18) | 48 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Borgo San Siro population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/borgo-san-siro-018018" title="Population pyramid of Borgo San Siro — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/borgo-san-siro-018018" alt="Population pyramid of Borgo San Siro — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>