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ISTAT Code: 007059
45.7522°N, 7.5572°E
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Population & demographics
All demographic data for Saint-Denis: population, births, deaths, balances and historical trends.
Income & tax data
Average income, median income, income brackets and historical trends for Saint-Denis.
Environment & air quality
Air quality (PM2.5, PM10, NO2) and land consumption data for Saint-Denis.
Saint-Denis is a small municipality in the province of Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste region. With a population of 372 inhabitants and a density of 33 per km², it covers an area of 11.1 km². The average declared income is 23.932 €.
Saint-Denis in numbers: the analysis
The census record tells a story of long decline: in 1951 Saint-Denis had 455 inhabitants; today (2026) it has 372 — 18.2% fewer.
The generational balance is in line with the norm: the ageing index of Saint-Denis is 189 (over-65s per 100 under-14s).
Demographic projections to 2050 estimate about 340 inhabitants for Saint-Denis: an expected decline of 8.6% from today.
Compared with the provincial average of Valle d'Aosta/Vallée d'Aoste (about 1,656 residents per municipality), Saint-Denis is a markedly smaller centre.
Among the 74 municipalities of the province of Valle d'Aosta/Vallée d'Aoste, Saint-Denis ranks 54 by population.
Population Trend
| Anno | Popolazione |
|---|---|
| 2019 | 382 |
| 2020 | 382 |
| 2021 | 366 |
| 2022 | 371 |
| 2023 | 362 |
| 2024 | 368 |
| 2025 | 365 |
| 2026 | 372 |
Male/Female Ratio
| Valore | % | |
|---|---|---|
| Men | 195 | 52.4% |
| Women | 177 | 47.6% |
Demographic Statistics
Demographic Indices
Births (recent years)
| Valore | |
|---|---|
| 2021 | 6 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 3 |
Historical Population (1951-present)
| Anno | Population |
|---|---|
| 1951 | 455 |
| 1961 | 445 |
| 1971 | 408 |
| 1981 | 376 |
| 1991 | 356 |
| 2001 | 342 |
| 2011 | 382 |
| 2019 | 382 |
| 2020 | 382 |
| 2021 | 366 |
| 2022 | 371 |
| 2023 | 362 |
| 2024 | 368 |
| 2025 | 365 |
| 2026 | 372 |
Marital Status (2025)
| Valore | % | |
|---|---|---|
| Single | 368 | 50.4% |
| Married | 280 | 38.4% |
| Divorced | 26 | 3.6% |
| Widowed | 56 | 7.7% |
School-Age Population (2026)
Total 0-18 years: 59
| Valore | |
|---|---|
| Nido (0-2) | 6 |
| Infanzia (3-5) | 8 |
| Primaria (6-10) | 12 |
| Medie (11-13) | 11 |
| Superiori (14-18) | 22 |
Foreign residents
Foreign presence and top citizenships
Embed this chart
Use the Saint-Denis population pyramid on your site or article — the DatiItalia source link is already included.
<a href="https://datitalia.eu/comune/saint-denis-007059" title="Population pyramid of Saint-Denis — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/saint-denis-007059" alt="Population pyramid of Saint-Denis — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>Municipalities near Saint-Denis
Chambave
Valle d'Aosta/Vallée d'Aoste
Verrayes
Valle d'Aosta/Vallée d'Aoste
Pontey
Valle d'Aosta/Vallée d'Aoste
Châtillon
Valle d'Aosta/Vallée d'Aoste
Fénis
Valle d'Aosta/Vallée d'Aoste
Torgnon
Valle d'Aosta/Vallée d'Aoste
Antey-Saint-André
Valle d'Aosta/Vallée d'Aoste
Saint-Vincent
Valle d'Aosta/Vallée d'Aoste
Municipalities in the same province
Allein
Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Antey-Saint-André
Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Aosta
Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Arnad
Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Arvier
Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Municipalities in the same region
Allein
Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Antey-Saint-André
Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Aosta
Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Arnad
Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Arvier
Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Avise
Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Municipalities with similar population
Lillianes
419 · Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Gaby
403 · Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Issime
376 · Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Champorcher
369 · Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Saint-Rhémy-en-Bosses
338 · Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste
Saint-Nicolas
324 · Valle d'Aosta/Vallée d'Aoste, Valle d'Aosta/Vallée d'Aoste