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Population & demographics
All demographic data for Marta: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Marta.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Marta.
Marta is a small municipality in the province of Viterbo, Lazio region. With a population of 3211 inhabitants and a density of 96 per km², it covers an area of 33.6 km². The average declared income is 19.789 €.
Marta in numbers: the analysis
Compared with the provincial average of Viterbo (about 5,130 residents per municipality), Marta is a markedly smaller centre.
Among the 60 municipalities of the province of Viterbo, Marta ranks 27 by population.
Over the long run the population of Marta has stayed essentially stable: 3,260 inhabitants in 1951, 3,211 in 2026 (less than 5% change).
The ageing index is one of the starkest signals: in Marta there are 297 residents over 65 for every 100 under 14, well above the national average.
Demographic projections to 2050 estimate about 2,754 inhabitants for Marta: an expected decline of 14.2% from today.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 3358 |
| 2020 | 3326 |
| 2021 | 3283 |
| 2022 | 3271 |
| 2023 | 3238 |
| 2024 | 3207 |
| 2025 | 3200 |
| 2026 | 3211 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 1513 | 47.1% |
| Women | 1698 | 52.9% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 21 |
| 2022 | 18 |
| 2023 | 22 |
| 2024 | 20 |
| 2025 | 17 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 3260 |
| 1961 | 3302 |
| 1971 | 3279 |
| 1981 | 3361 |
| 1991 | 3372 |
| 2001 | 3436 |
| 2011 | 3520 |
| 2019 | 3358 |
| 2020 | 3326 |
| 2021 | 3283 |
| 2022 | 3271 |
| 2023 | 3238 |
| 2024 | 3207 |
| 2025 | 3200 |
| 2026 | 3211 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 2520 | 39.4% |
| Married | 2928 | 45.8% |
| Divorced | 330 | 5.2% |
| Widowed | 622 | 9.7% |
School-Age Population (2026)
Total 0-18 years: 426
| Valore | |
|---|---|
| Nido (0-2) | 63 |
| Infanzia (3-5) | 69 |
| Primaria (6-10) | 104 |
| Medie (11-13) | 76 |
| Superiori (14-18) | 114 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Marta population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/marta-056034" title="Population pyramid of Marta — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/marta-056034" alt="Population pyramid of Marta — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>