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  1. Home
  2. Liguria
  3. Savona
  4. Onzo

Onzo is a small municipality in the province of Savona, Liguria region. With a population of 209 inhabitants and a density of 25 per km², it covers an area of 8.2 km². The average declared income is 17.574 €.

LiguriaSavona

Onzo

ISTAT Code: 009043

44.0696°N, 8.0514°E

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209
Inhabitants
25
Inhabitants/km²
17.574 €
Average Income
11.48 µg/m³
PM2.5
3,8%
Land Consumption
8.2 km²
Area

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Population Trend

Male/Female Ratio

209Totale
Men
Women

Demographic Statistics

Men101
Women108
Year2026

Demographic Indices

-0.95%
Annual change
change from the previous year
416.7
Ageing index
65+ / 0-14 × 100
80.2
Dependency ratio
(0-14 + 65+) / 15-64 × 100
170
Workforce replacement
60-64 / 15-19 × 100
169.8
Workforce structure
40-64 / 15-39 × 100
15.4
Child dependency
0-4 / women 15-49 × 100
53.48
Average age
weighted average age

Births (recent years)

Historical Population (1951-present)

Marital Status (2025)

422Totale
Single
Married
Divorced
Widowed

School-Age Population (2026)

Total 0-18 years: 27

Foreign residents

Foreign presence and top citizenships

Main citizenships
Foreign residents
34
Foreign-resident share: 16.11%
Main citizenships
Marocco15
Germania8
Albania4
Romania4
Stati Uniti d'America3

Municipalities in the same province

Alassio

Savona, Liguria

Albenga

Savona, Liguria

Albisola Superiore

Savona, Liguria

Albissola Marina

Savona, Liguria

Altare

Savona, Liguria

Municipalities in the same region

Airole

Imperia, Liguria

Alassio

Savona, Liguria

Albenga

Savona, Liguria

Albisola Superiore

Savona, Liguria

Albissola Marina

Savona, Liguria

Altare

Savona, Liguria

Municipalities with similar population

Castel Vittorio

248 · Imperia, Liguria

Caravonica

244 · Imperia, Liguria

Fontanigorda

223 · Genova, Liguria

Terzorio

220 · Imperia, Liguria

Erli

219 · Savona, Liguria

Montebruno

201 · Genova, Liguria

Source: ISTAT 2025, MEF 2023, ISPRA 2024, EEA 2022 · Year: 2025