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Population & demographics
All demographic data for Caiolo: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Caiolo.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Caiolo.
Caiolo is a small municipality in the province of Sondrio, Lombardia region. With a population of 1034 inhabitants and a density of 32 per km², it covers an area of 32.7 km². The average declared income is 25.147 €.
Caiolo in numbers: the analysis
Among the 77 municipalities of the province of Sondrio, Caiolo ranks 46 by population.
Compared with the provincial average of Sondrio (about 2,328 residents per municipality), Caiolo is a markedly smaller centre.
Demographic projections to 2050 estimate about 871 inhabitants for Caiolo: an expected decline of 15.8% from today.
The generational balance is in line with the norm: the ageing index of Caiolo is 246 (over-65s per 100 under-14s).
The census record tells a story of long decline: in 1951 Caiolo had 1,101 inhabitants; today (2026) it has 1,034 — 6.1% fewer.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 1087 |
| 2020 | 1083 |
| 2021 | 1056 |
| 2022 | 1048 |
| 2023 | 1049 |
| 2024 | 1049 |
| 2025 | 1047 |
| 2026 | 1034 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 540 | 52.2% |
| Women | 494 | 47.8% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 2 |
| 2022 | 13 |
| 2023 | 3 |
| 2024 | 5 |
| 2025 | 4 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 1101 |
| 1961 | 1025 |
| 1971 | 948 |
| 1981 | 947 |
| 1991 | 903 |
| 2001 | 956 |
| 2011 | 1035 |
| 2019 | 1087 |
| 2020 | 1083 |
| 2021 | 1056 |
| 2022 | 1048 |
| 2023 | 1049 |
| 2024 | 1049 |
| 2025 | 1047 |
| 2026 | 1034 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 932 | 44.5% |
| Married | 900 | 43.0% |
| Divorced | 102 | 4.9% |
| Widowed | 160 | 7.6% |
School-Age Population (2026)
Total 0-18 years: 148
| Valore | |
|---|---|
| Nido (0-2) | 14 |
| Infanzia (3-5) | 15 |
| Primaria (6-10) | 40 |
| Medie (11-13) | 34 |
| Superiori (14-18) | 45 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Caiolo population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/caiolo-014011" title="Population pyramid of Caiolo — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/caiolo-014011" alt="Population pyramid of Caiolo — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>