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Population & demographics
All demographic data for Semiana: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Semiana.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Semiana.
Semiana is a small municipality in the province of Pavia, Lombardia region. With a population of 192 inhabitants and a density of 19 per km², it covers an area of 9.9 km². The average declared income is 24.558 €.
Semiana in numbers: the analysis
Demographic projections to 2050 estimate about 153 inhabitants for Semiana: an expected decline of 20.3% from today.
Compared with the provincial average of Pavia (about 2,951 residents per municipality), Semiana is a markedly smaller centre.
Among the 185 municipalities of the province of Pavia, Semiana ranks 173 by population.
The census record tells a story of long decline: in 1951 Semiana had 939 inhabitants; today (2026) it has 192 — 79.6% fewer.
The ageing index is one of the starkest signals: in Semiana there are 767 residents over 65 for every 100 under 14, well above the national average.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 205 |
| 2020 | 203 |
| 2021 | 206 |
| 2022 | 197 |
| 2023 | 196 |
| 2024 | 198 |
| 2025 | 189 |
| 2026 | 192 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 97 | 50.5% |
| Women | 95 | 49.5% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 1 |
| 2022 | 0 |
| 2023 | 2 |
| 2024 | 0 |
| 2025 | 1 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 939 |
| 1961 | 701 |
| 1971 | 455 |
| 1981 | 336 |
| 1991 | 257 |
| 2001 | 256 |
| 2011 | 257 |
| 2019 | 205 |
| 2020 | 203 |
| 2021 | 206 |
| 2022 | 197 |
| 2023 | 196 |
| 2024 | 198 |
| 2025 | 189 |
| 2026 | 192 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 142 | 37.6% |
| Married | 190 | 50.3% |
| Divorced | 12 | 3.2% |
| Widowed | 34 | 9.0% |
School-Age Population (2026)
Total 0-18 years: 13
| Valore | |
|---|---|
| Nido (0-2) | 3 |
| Infanzia (3-5) | 1 |
| Primaria (6-10) | 3 |
| Medie (11-13) | 1 |
| Superiori (14-18) | 5 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Semiana population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/semiana-018148" title="Population pyramid of Semiana — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/semiana-018148" alt="Population pyramid of Semiana — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>