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  1. Home
  2. Lazio
  3. Roma
  4. Zagarolo

Zagarolo is a medium-sized municipality in the province of Roma, Lazio region. With a population of 18.963 inhabitants and a density of 676 per km², it covers an area of 28.0 km². The average declared income is 21.203 €.

LazioRoma

Zagarolo

ISTAT Code: 058114

41.8399°N, 12.8296°E

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19.0k
Inhabitants
676
Inhabitants/km²
21.203 €
Average Income
13.79 µg/m³
PM2.5
17,0%
Land Consumption
28.0 km²
Area

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Population Trend

Male/Female Ratio

18.963Totale
Men
Women

Demographic Statistics

Men9638
Women9325
Year2026

Demographic Indices

+0.46%
Annual change
change from the previous year
148.3
Ageing index
65+ / 0-14 × 100
49.2
Dependency ratio
(0-14 + 65+) / 15-64 × 100
130.7
Workforce replacement
60-64 / 15-19 × 100
134
Workforce structure
40-64 / 15-39 × 100
18.2
Child dependency
0-4 / women 15-49 × 100
43.66
Average age
weighted average age

Births (recent years)

Historical Population (1951-present)

Marital Status (2025)

37.752Totale
Single
Married
Divorced
Widowed

School-Age Population (2026)

Total 0-18 years: 3404

Foreign residents

Foreign presence and top citizenships

Main citizenships
Foreign residents
2667
Foreign-resident share: 14.13%
Main citizenships
Romania1673
Albania129
Nigeria104
Marocco75
Moldova56

Municipalities in the same province

Affile

Roma, Lazio

Agosta

Roma, Lazio

Albano Laziale

Roma, Lazio

Allumiere

Roma, Lazio

Anguillara Sabazia

Roma, Lazio

Municipalities in the same region

Accumoli

Rieti, Lazio

Acquafondata

Frosinone, Lazio

Acquapendente

Viterbo, Lazio

Acuto

Frosinone, Lazio

Affile

Roma, Lazio

Agosta

Roma, Lazio

Municipalities with similar population

Genzano di Roma

22.674 · Roma, Lazio

Mentana

22.605 · Roma, Lazio

Ceccano

22.207 · Frosinone, Lazio

Palestrina

22.138 · Roma, Lazio

Anagni

20.627 · Frosinone, Lazio

Colleferro

20.454 · Roma, Lazio

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