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Rio de Mouro

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

Rio de Mouro had 49.489 residents in the 2021 Census, 15,3% of whom were aged 65 or over, and 19,2% of the population aged 15 or over had completed higher education. It borders 7 parishes and its centroid is 6,7 km in a straight line from the centroid of the municipality of Sintra.

Population (inh.)
  • 3.676 – 5.205
  • 7.746 – 12.788
  • 13.347 – 26.310
  • 29.896 – 41.323
  • 47.804 – 68.649
Density (inh./km²)
  • 199,4 – 232,1
  • 232,7 – 426,5
  • 470,4 – 3.001,2
  • 4.290,6 – 6.910,2
  • 7.191,2 – 15.470,6
Area (km²)
  • 2,2 – 3,6
  • 4,4 – 8,6
  • 15,7 – 16,5
  • 22,8 – 33,4
  • 39,8 – 63,6
Quantile classes · current parish
Parish highlighted. Click a neighbouring parish to open its page. Geometry: CAOP2025, Direção-Geral do Território (simplified).

The 15 parishes of Sintra

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

#ParishPopulationArea (km²)Inhab./km²
1Algueirão-Mem Martins68.64916,004.290,6
2Almargem do Bispo9.26139,80232,7
3Belas26.31022,841.151,9
4Casal de Cambra13.3472,176.150,7
5Colares7.74633,37232,1
6Montelavar3.6768,62426,5
7Pêro Pinheiro4.32515,65276,4
8Queluz26.1043,637.191,2
9Rio de Mouro49.48916,493.001,2
10São João das Lampas12.78857,50222,4
11Terrugem5.20526,10199,4
12União das freguesias de Agualva e Mira-Sintra41.3235,986.910,2
13União das freguesias de Massamá e Monte Abraão47.8043,0915.470,6
14União das freguesias de Sintra (Santa Maria e São Miguel, São Martinho e São Pedro de Penaferrim)29.89663,55470,4
15União das freguesias do Cacém e São Marcos39.6834,448.937,6
Code (DTMNFR)
111108
Resident population (2021)
49.489
Area
16,49 km²
Density
3.001,2 inh./km²
Share of the municipality (population)
12,8%
Rank in the municipality (population)
2nd of 15

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
23.265 (47,0%)
Women
26.224 (53,0%)
Portuguese nationality
44.580 (90,1%)
Foreign nationality
4.909 (9,9%)
Ageing index
97,9 elderly per 100 young people
Private households
19.269
Average household size *
2,55 people
Dwellings
22.242
Classic family dwellings
22.229
Buildings
5.319
Buildings with 7 or more floors
452
With higher education (15+)
19,2% (8.019)
Unemployment rate *
9,27% (H 8,17% · M 10,29%)
Active / employed population
25.826 / 23.433

Population by age group

Population by age group0-14 years: 7.728 (15,6%); 15-24 years: 6.211 (12,6%); 25-64 years: 27.984 (56,5%); 65+ years: 7.566 (15,3%)0-147.728 · 15,6%15-246.211 · 12,6%25-6427.984 · 56,5%65+7.566 · 15,3%
Residents by age group and share of the total (49.489).
Age groupTotalMenWomen
0-14 years7.7283.9153.813
15-24 years6.2113.1043.107
25-64 years27.98413.00714.977
65+ years7.5663.2394.327

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

São Domingos de Rana (Cascais) · União das freguesias de Sintra (Santa Maria e São Miguel, São Martinho e São Pedro de Penaferrim) · União das freguesias do Cacém e São Marcos · Algueirão-Mem Martins · Belas · Porto Salvo (Oeiras) · União das freguesias de Agualva e Mira-Sintra

Straight-line distance to the centroid of the municipality of Sintra
6,7 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
41.746
Voters
20.070
Turnout
48,08% (2021: 37,91%)
Seats
21
ListVotes%Seats
PS.L
AS PESSOAS, SEMPRE - COLIGAÇÃO PS/L		6.38931,83%7
PPD/PSD.IL.PAN
SEMPRE COM OS SINTRENSES		5.85329,16%7
CH
CHEGA		5.18425,83%6
PCP-PEV
CDU - Coligação Democrática Unitária		1.2606,28%1
B.E.
Bloco de Esquerda		4542,26%0
CDS-PP/PPM/ADN
Por Sintra, a Nossa Casa		4192,09%0
Blank votes2781,39%
Null votes2331,16%

Most-voted list, which elects the parish-council president: PS.L.

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 Oscar Monteiro Torres N.º 19, R/C-A
Rio de Mouro (SINTRA)
2635-385 RIO DE MOURO
Telephone
219178290
Email
geral@jf-riodemouro.pt
Website
www.jf-riodemouro.pt

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

More information

Coordinates
38,76889, -9,33273
Official website
www.jf-riodemouro.pt
Wikipedia
Rio de Mouro
Wikidata
Q1631953

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