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Population & demographics
All demographic data for Piatto: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Piatto.
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Air quality (PM2.5, PM10, NO2) and land consumption data for Piatto.
Piatto is a small municipality in the province of Biella, Piemonte region. With a population of 470 inhabitants and a density of 126 per km², it covers an area of 3.7 km². The average declared income is 25.129 €.
Piatto in numbers: the analysis
Demographic projections to 2050 estimate about 362 inhabitants for Piatto: an expected decline of 23% from today.
Compared with the provincial average of Biella (about 2,273 residents per municipality), Piatto is a markedly smaller centre.
Among the 74 municipalities of the province of Biella, Piatto ranks 57 by population.
The census record tells a story of long decline: in 1951 Piatto had 555 inhabitants; today (2026) it has 470 — 15.3% fewer.
The ageing index is one of the starkest signals: in Piatto there are 503 residents over 65 for every 100 under 14, well above the national average.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 507 |
| 2020 | 491 |
| 2021 | 473 |
| 2022 | 478 |
| 2023 | 469 |
| 2024 | 472 |
| 2025 | 466 |
| 2026 | 470 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 239 | 50.9% |
| Women | 231 | 49.1% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 5 |
| 2022 | 0 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 0 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 555 |
| 1961 | 538 |
| 1971 | 505 |
| 1981 | 525 |
| 1991 | 507 |
| 2001 | 552 |
| 2011 | 547 |
| 2019 | 507 |
| 2020 | 491 |
| 2021 | 473 |
| 2022 | 478 |
| 2023 | 469 |
| 2024 | 472 |
| 2025 | 466 |
| 2026 | 470 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 360 | 38.6% |
| Married | 436 | 46.8% |
| Divorced | 50 | 5.4% |
| Widowed | 86 | 9.2% |
School-Age Population (2026)
Total 0-18 years: 48
| Valore | |
|---|---|
| Nido (0-2) | 5 |
| Infanzia (3-5) | 6 |
| Primaria (6-10) | 9 |
| Medie (11-13) | 8 |
| Superiori (14-18) | 20 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Piatto population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/piatto-096043" title="Population pyramid of Piatto — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/piatto-096043" alt="Population pyramid of Piatto — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>