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Santo Isidoro

Parish of the municipality of Mafra (Mafra), district of Lisboa.

Santo Isidoro had 4.396 residents in the 2021 Census, 20,3% of whom were aged 65 or over, and 22,3% of the population aged 15 or over had completed higher education. It borders 4 parishes and its centroid is 7,8 km in a straight line from the centroid of the municipality of Mafra.

Population (inh.)
  • 2.848 – 4.396
  • 4.434 – 4.693
  • 4.918 – 7.645
  • 9.647 – 10.815
  • 12.359 – 20.781
Density (inh./km²)
  • 125,7 – 144,8
  • 172,5 – 177,0
  • 312,9 – 346,9
  • 366,9 – 433,4
  • 572,5 – 1.025,6
Area (km²)
  • 8,2 – 16,9
  • 24,4 – 24,8
  • 28,5 – 29,5
  • 30,6 – 31,7
  • 37,1 – 48,0
Quantile classes · current parish
Parish highlighted. Click a neighbouring parish to open its page. Geometry: CAOP2025, Direção-Geral do Território (simplified).

The 11 parishes of Mafra

Hover a row to highlight it on the map. Click a header to sort.

#ParishPopulationArea (km²)Inhab./km²
1Carvoeira2.8488,21346,9
2Encarnação4.91828,51172,5
3Ericeira12.35912,051.025,6
4Mafra20.78147,95433,4
5Milharado7.64524,43312,9
6Santo Isidoro4.39624,83177,0
7União das freguesias de Azueira e Sobral da Abelheira4.43430,63144,8
8União das freguesias de Enxara do Bispo, Gradil e Vila Franca do Rosário3.97931,65125,7
9União das freguesias de Igreja Nova e Cheleiros4.69337,07126,6
10União das freguesias de Malveira e São Miguel de Alcainça9.64716,85572,5
11União das freguesias de Venda do Pinheiro e Santo Estêvão das Galés10.81529,48366,9
Code (DTMNFR)
110913
Resident population (2021)
4.396
Area
24,83 km²
Density
177,0 inh./km²
Share of the municipality (population)
5,1%
Rank in the municipality (population)
9th of 11

INE, Censos 2021 (população residente por freguesia, geografia 2025, ind. 0014584); DGT, CAOP2025 (área). Population refers to the 2021 census moment, compiled by INE for the parish boundaries in force in 2025.

2021 Census in detail

Men
2.168 (49,3%)
Women
2.228 (50,7%)
Portuguese nationality
4.034 (91,8%)
Foreign nationality
362 (8,2%)
Ageing index
132,4 elderly per 100 young people
Private households
1.736
Average household size *
2,52 people
Dwellings
2.610
Classic family dwellings
2.605
Buildings
2.428
Buildings with 7 or more floors
0
With higher education (15+)
22,3% (832)
Unemployment rate *
6,79% (H 7,20% · M 6,35%)
Active / employed population
2.092 / 1.950

Population by age group

Population by age group0-14 years: 673 (15,3%); 15-24 years: 457 (10,4%); 25-64 years: 2.375 (54,0%); 65+ years: 891 (20,3%)0-14673 · 15,3%15-24457 · 10,4%25-642.375 · 54,0%65+891 · 20,3%
Residents by age group and share of the total (4.396).
Age groupTotalMenWomen
0-14 years673348325
15-24 years457230227
25-64 years2.3751.1701.205
65+ years891420471

Source: INE, Censos 2021 — indicators 0014630, 0014631, 0014627, 0014623, 0014621, 0014635, 0014636, 0012481, 0012328, 0014632, obtained from the INE indicators API on 24/09/2026 (licence CC BY 4.0). Parish geography of 2025 (CAOP2025). Nationality (Portuguese, foreign, stateless) is INE indicator 0014632. * Indicator published by INE only for 2013 parish geography (NUTS 2024); used because the parish has the same territory in both geographies (identical population by sex and age group). Ageing index = population aged 65+ ÷ population aged 0–14 × 100; share with higher education = residents with completed higher education ÷ residents aged 15 or over (our calculations from INE figures).

Neighbouring parishes

Encarnação · Mafra · Ericeira · União das freguesias de Azueira e Sobral da Abelheira

Straight-line distance to the centroid of the municipality of Mafra
7,8 km

Neighbourhood calculated from official boundaries: DGT, Carta Administrativa Oficial de Portugal (CAOP) 2025 (licence CC BY 4.0); two parishes are neighbours when they share a boundary segment. The distance is the straight-line (great-circle) distance between the geometric centroid of the parish and that of the municipality (in territories with islets, of the main part), not a road distance.

2025 local elections — Parish assembly

Registered voters
3.537
Voters
2.266
Turnout
64,07% (2021: 54,69%)
Seats
9
ListVotes%Seats
PPD/PSD
Partido Social Democrata		1.22554,06%6
PS
Partido Socialista		52323,08%2
CH
CHEGA		31613,95%1
PCP-PEV
CDU - Coligação Democrática Unitária		1054,63%0
Blank votes693,05%
Null votes281,24%

Most-voted list, which elects the parish-council president: PPD/PSD.

Source: SGMAI — official results of the local elections of 12 October 2025 (Secretary-General of the Ministry of Internal Administration), consulted on 25/09/2026. Percentages calculated by SGMAI over total voters.

Parish-council contacts

Address
Rua da Igreja, N.º 5
Santo Isidoro (MAFRA)
2640-092 SANTO ISIDORO
Telephone
261867228
Email
juntafsi@sapo.pt

Source: DGAL - Portal Autárquico (Direção-Geral das Autarquias Locais), consulted on 25/09/2026.

More information

Coordinates
38,99361, -9,39861
Wikipedia
Santo Isidoro (Mafra)
Wikidata
Q787763

Source: Wikidata (data under CC0 1.0), consulted on 24/09/2026. The patron saint and coordinates are those recorded on Wikidata.

Sources: INE, 2021 Census (resident population) · DGT, CAOP2025 (area and parishes) · more details · Data updated on 24/09/2026