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Bollate is a medium-sized municipality in the province of Milano, Lombardia region. With a population of 36.754 inhabitants and a density of 2862 per km², it covers an area of 12.8 km². The average declared income is 27.483 €.

Bollate in numbers: the analysis

The generational balance is in line with the norm: the ageing index of Bollate is 230 (over-65s per 100 under-14s).

Looking ahead to 2050, projections give Bollate about 39,255 inhabitants, up 6.8% from today.

The average municipality in the province of Milano has about 24,459 residents: Bollate has 1.5 times as many.

Few municipalities in Lombardia are larger: it ranks no. 32 by population out of 1502.

By population, Bollate ranks no. 12 among the 133 municipalities of the province of Milano.

Bollate has grown substantially since 1951: from 10,815 inhabitants then to 36,754 in 2026, an increase of 239.8%.

Population Trend

Grafico a linee
AnnoPopolazione
201936.055
202036.187
202136.239
202236.166
202336.279
202436.323
202536.365
202636.754

Male/Female Ratio

Grafico a ciambella
Valore%
Men17.80848.5%
Women18.94651.5%

Demographic Statistics

Men17.808
Women18.946
Year2026

Demographic Indices

+1.07%
Annual change
change from the previous year
229.9
Ageing index
65+ / 0-14 × 100
59
Dependency ratio
(0-14 + 65+) / 15-64 × 100
177.7
Workforce replacement
60-64 / 15-19 × 100
139
Workforce structure
40-64 / 15-39 × 100
17.2
Child dependency
0-4 / women 15-49 × 100
47.16
Average age
weighted average age

Births (recent years)

Grafico a barre
Valore
2021222
2022250
2023212
2024195
2025222

Historical Population (1951-present)

Grafico a linee
AnnoPopulation
195110.815
196119.604
197130.591
198130.931
199131.388
200135.740
201135.557
201936.055
202036.187
202136.239
202236.166
202336.279
202436.323
202536.365
202636.754

Marital Status (2025)

Grafico a ciambella
Valore%
Single31.58843.5%
Married32.41044.6%
Divorced31564.3%
Widowed55127.6%

School-Age Population (2026)

Total 0-18 years: 5508

Grafico a barre
Valore
Nido (0-2)653
Infanzia (3-5)761
Primaria (6-10)1414
Medie (11-13)954
Superiori (14-18)1726

Foreign residents

Foreign presence and top citizenships

Main citizenships
Foreign residents
2993
Foreign-resident share: 8.23%
Main citizenships
Romania460
Egitto386
Albania357
Ucraina245
Perù211

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Use the Bollate population pyramid on your site or article — the DatiItalia source link is already included.

Population pyramid of Bollate — DatiItalia
<a href="https://datitalia.eu/comune/bollate-015027" title="Population pyramid of Bollate — DatiItalia"><img src="https://datitalia.eu/render/chart/piramide/bollate-015027" alt="Population pyramid of Bollate — DatiItalia" width="600" style="max-width:100%;height:auto;border:0" loading="lazy" /></a>
Source: ISTAT, MEF, ISPRA, EEA · Year: 2025 · updated Jun 28, 2026

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