Trezzo sull'Adda is a medium-sized municipality in the province of Milano, Lombardia region. With a population of 12.442 inhabitants and a density of 0 per km², it covers an area of 0.0 km². The average declared income is 26.644 €.

Population Trend

Male/Female Ratio

12.442Totale
Men
Women

Demographic Statistics

Men6145
Women6297
Year2026

Demographic Indices

+1.82%
Annual change
change from the previous year
225.6
Ageing index
65+ / 0-14 × 100
58
Dependency ratio
(0-14 + 65+) / 15-64 × 100
166.5
Workforce replacement
60-64 / 15-19 × 100
138.7
Workforce structure
40-64 / 15-39 × 100
15.9
Child dependency
0-4 / women 15-49 × 100
46.94
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: 1884

Foreign residents

Foreign presence and top citizenships

Main citizenships
Foreign residents
1829
Foreign-resident share: 14.97%
Main citizenships
Romania573
Ucraina169
Marocco163
Albania138
Egitto127
Source: ISTAT 2025, MEF 2023, ISPRA 2024, EEA 2022 · Year: 2025