Sostegno is a small municipality in the province of Biella, Piemonte region. With a population of 732 inhabitants and a density of 0 per km², it covers an area of 0.0 km². The average declared income is 26.670 €.

Population Trend

Male/Female Ratio

732Totale
Men
Women

Demographic Statistics

Men353
Women379
Year2026

Demographic Indices

+0.41%
Annual change
change from the previous year
308.8
Ageing index
65+ / 0-14 × 100
61.2
Dependency ratio
(0-14 + 65+) / 15-64 × 100
296
Workforce replacement
60-64 / 15-19 × 100
191
Workforce structure
40-64 / 15-39 × 100
8.5
Child dependency
0-4 / women 15-49 × 100
50.42
Average age
weighted average age

Births (recent years)

Historical Population (1951-present)

Marital Status (2026)

0Totale
Single
Married
Divorced
Widowed

School-Age Population (2026)

Total 0-18 years: 90

Foreign residents

Foreign presence and top citizenships

Main citizenships
Foreign residents
24
Foreign-resident share: 3.29%
Main citizenships
Ucraina10
Sri Lanka4
Francia2
Romania2
Senegal2
Source: ISTAT 2025, MEF 2023, ISPRA 2024, EEA 2022 · Year: 2025