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Population & demographics
All demographic data for Fonni: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Fonni.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Fonni.
Fonni is a small municipality in the province of Nuoro, Sardegna region. With a population of 3552 inhabitants and a density of 32 per km², it covers an area of 112.4 km². The average declared income is 17.071 €.
Fonni in numbers: the analysis
The census record tells a story of long decline: in 1951 Fonni had 5,195 inhabitants; today (2026) it has 3,552 — 31.6% fewer.
The generational balance is in line with the norm: the ageing index of Fonni is 225 (over-65s per 100 under-14s).
Demographic projections to 2050 estimate about 2,821 inhabitants for Fonni: an expected decline of 20.6% from today.
Among the 74 municipalities of the province of Nuoro, Fonni ranks 12 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 3799 |
| 2020 | 3796 |
| 2021 | 3752 |
| 2022 | 3692 |
| 2023 | 3644 |
| 2024 | 3620 |
| 2025 | 3579 |
| 2026 | 3552 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1727 | 48.6% |
| Women | 1825 | 51.4% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 25 |
| 2022 | 29 |
| 2023 | 29 |
| 2024 | 23 |
| 2025 | 31 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 5195 |
| 1961 | 5451 |
| 1971 | 5101 |
| 1981 | 4950 |
| 1991 | 4654 |
| 2001 | 4371 |
| 2011 | 4062 |
| 2019 | 3799 |
| 2020 | 3796 |
| 2021 | 3752 |
| 2022 | 3692 |
| 2023 | 3644 |
| 2024 | 3620 |
| 2025 | 3579 |
| 2026 | 3552 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 3336 | 46.6% |
| Married | 3112 | 43.5% |
| Divorced | 104 | 1.5% |
| Widowed | 606 | 8.5% |
School-Age Population (2026)
Total 0-18 years: 568
| Valore | |
|---|---|
| Nido (0-2) | 83 |
| Infanzia (3-5) | 85 |
| Primaria (6-10) | 142 |
| Medie (11-13) | 101 |
| Superiori (14-18) | 157 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Fonni population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/fonni-091024" title="Population pyramid of Fonni — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/fonni-091024" alt="Population pyramid of Fonni — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>