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  1. Home
  2. Emilia-Romagna
  3. Bologna
  4. Castel San Pietro Terme

Castel San Pietro Terme is a medium-sized municipality in the province of Bologna, Emilia-Romagna region. With a population of 20.702 inhabitants and a density of 139 per km², it covers an area of 148.4 km². The average declared income is 28.337 €.

Emilia-RomagnaBologna

Castel San Pietro Terme

ISTAT Code: 037020

44.3981°N, 11.5892°E

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20.7k
Inhabitants
139
Inhabitants/km²
28.337 €
Average Income
13.79 µg/m³
PM2.5
7,8%
Land Consumption
148.4 km²
Area

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Population Trend

Male/Female Ratio

20.702Totale
Men
Women

Demographic Statistics

Men10.219
Women10.483
Year2026

Demographic Indices

+0.43%
Annual change
change from the previous year
256.6
Ageing index
65+ / 0-14 × 100
64.2
Dependency ratio
(0-14 + 65+) / 15-64 × 100
160.5
Workforce replacement
60-64 / 15-19 × 100
142.4
Workforce structure
40-64 / 15-39 × 100
17.3
Child dependency
0-4 / women 15-49 × 100
48.01
Average age
weighted average age

Births (recent years)

Historical Population (1951-present)

Marital Status (2025)

41.196Totale
Single
Married
Divorced
Widowed

School-Age Population (2026)

Total 0-18 years: 3080

Foreign residents

Foreign presence and top citizenships

Main citizenships
Foreign residents
1861
Foreign-resident share: 9.03%
Main citizenships
Romania401
Marocco226
Pakistan192
Ucraina165
Albania162

Municipalities in the same province

Alto Reno Terme

Bologna, Emilia-Romagna

Anzola dell'Emilia

Bologna, Emilia-Romagna

Argelato

Bologna, Emilia-Romagna

Baricella

Bologna, Emilia-Romagna

Bentivoglio

Bologna, Emilia-Romagna

Municipalities in the same region

Agazzano

Piacenza, Emilia-Romagna

Albareto

Parma, Emilia-Romagna

Albinea

Reggio nell'Emilia, Emilia-Romagna

Alfonsine

Ravenna, Emilia-Romagna

Alseno

Piacenza, Emilia-Romagna

Alta Val Tidone

Piacenza, Emilia-Romagna

Municipalities with similar population

Mirandola

24.395 · Modena, Emilia-Romagna

Santarcangelo di Romagna

22.228 · Rimini, Emilia-Romagna

Comacchio

22.054 · Ferrara, Emilia-Romagna

Argenta

21.110 · Ferrara, Emilia-Romagna

Salsomaggiore Terme

20.310 · Parma, Emilia-Romagna

Bellaria-Igea Marina

19.453 · Rimini, Emilia-Romagna

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