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Population & demographics
All demographic data for Chianni: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Chianni.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Chianni.
Chianni is a small municipality in the province of Pisa, Toscana region. With a population of 1276 inhabitants and a density of 21 per km², it covers an area of 62.0 km². The average declared income is 21.004 €.
Chianni in numbers: the analysis
Demographic projections to 2050 estimate about 1,071 inhabitants for Chianni: an expected decline of 16.1% from today.
The ageing index is one of the starkest signals: in Chianni there are 408 residents over 65 for every 100 under 14, well above the national average.
The census record tells a story of long decline: in 1951 Chianni had 3,340 inhabitants; today (2026) it has 1,276 — 61.8% fewer.
Among the 37 municipalities of the province of Pisa, Chianni ranks 32 by population.
Compared with the provincial average of Pisa (about 11,340 residents per municipality), Chianni is a markedly smaller centre.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 1343 |
| 2020 | 1333 |
| 2021 | 1318 |
| 2022 | 1315 |
| 2023 | 1311 |
| 2024 | 1321 |
| 2025 | 1294 |
| 2026 | 1276 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 646 | 50.6% |
| Women | 630 | 49.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 4 |
| 2022 | 7 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 7 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 3340 |
| 1961 | 2473 |
| 1971 | 1952 |
| 1981 | 1738 |
| 1991 | 1614 |
| 2001 | 1563 |
| 2011 | 1457 |
| 2019 | 1343 |
| 2020 | 1333 |
| 2021 | 1318 |
| 2022 | 1315 |
| 2023 | 1311 |
| 2024 | 1321 |
| 2025 | 1294 |
| 2026 | 1276 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 1080 | 41.7% |
| Married | 1154 | 44.6% |
| Divorced | 106 | 4.1% |
| Widowed | 248 | 9.6% |
School-Age Population (2026)
Total 0-18 years: 139
| Valore | |
|---|---|
| Nido (0-2) | 16 |
| Infanzia (3-5) | 22 |
| Primaria (6-10) | 37 |
| Medie (11-13) | 25 |
| Superiori (14-18) | 39 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Chianni population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/chianni-050012" title="Population pyramid of Chianni — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/chianni-050012" alt="Population pyramid of Chianni — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>