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Rio Mau

Parish of the municipality of Penafiel (Penafiel), district of Porto.

Rio Mau had 1.340 residents in the 2021 Census, 21,1% of whom were aged 65 or over, and 9,9% of the population aged 15 or over had completed higher education. It borders 6 parishes and its centroid is 11,4 km in a straight line from the centroid of the municipality of Penafiel.

Population (inh.)
  • 823 – 1.364
  • 1.459 – 1.579
  • 1.682 – 1.954
  • 2.100 – 2.584
  • 2.780 – 15.676
Density (inh./km²)
  • 72,8 – 175,1
  • 218,6 – 278,4
  • 301,0 – 323,2
  • 326,0 – 481,3
  • 525,3 – 696,1
Area (km²)
  • 3,1 – 4,3
  • 4,6 – 5,2
  • 6,1 – 6,9
  • 7,3 – 10,2
  • 10,6 – 22,5
Quantile classes · current parish
Parish highlighted. Click a neighbouring parish to open its page. Geometry: CAOP2025, Direção-Geral do Território (simplified).

The 28 parishes of Penafiel

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

#ParishPopulationArea (km²)Inhab./km²
1Abragão2.3119,53242,5
2Boelhe1.5325,09301,0
3Bustelo1.6826,86245,2
4Cabeça Santa2.3546,93339,7
5Canelas1.57911,82133,6
6Capela96413,2572,8
7Castelões1.3644,22323,2
8Croca1.7926,64269,9
9Duas Igrejas2.2558,10278,4
10Eja8634,93175,1
11Fonte Arcada1.4594,82302,7
12Galegos2.5844,57565,4
13Guilhufe e Urrô3.8457,32525,3
14Irivo2.1003,17662,5
15Lagares e Figueira2.78016,64167,1
16Luzim e Vila Cova1.53910,60145,2
17Oldrões1.9544,06481,3
18Paço de Sousa3.8388,60446,3
19Penafiel15.67622,52696,1
20Perozelo1.3173,99330,1
21Rans1.8043,05591,5
22Recezinhos (São Mamede)1.3644,25320,9
23Recezinhos (São Martinho)1.7085,24326,0
24Rio Mau1.3406,13218,6
25Rio de Moinhos2.5368,21308,9
26Sebolido8235,15159,8
27Termas de São Vicente4.75810,21466,0
28Valpedre1.5086,33238,2
Code (DTMNFR)
131138
Resident population (2021)
1.340
Area
6,13 km²
Density
218,6 inh./km²
Share of the municipality (population)
1,9%
Rank in the municipality (population)
24th of 28

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
672 (50,1%)
Women
668 (49,9%)
Portuguese nationality
1.335 (99,6%)
Foreign nationality
5 (0,4%)
Ageing index
180,3 elderly per 100 young people
Private households
507
Average household size *
2,64 people
Dwellings
671
Classic family dwellings
671
Buildings
583
Buildings with 7 or more floors
0
With higher education (15+)
9,9% (117)
Unemployment rate *
9,76% (H 9,50% · M 10,07%)
Active / employed population
625 / 564

Population by age group

Population by age group0-14 years: 157 (11,7%); 15-24 years: 159 (11,9%); 25-64 years: 741 (55,3%); 65+ years: 283 (21,1%)0-14157 · 11,7%15-24159 · 11,9%25-64741 · 55,3%65+283 · 21,1%
Residents by age group and share of the total (1.340).
Age groupTotalMenWomen
0-14 years1577483
15-24 years1599366
25-64 years741366375
65+ years283139144

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

Sebolido · Capela · União das freguesias de Melres e Medas (Gondomar) · Pedorido (Castelo de Paiva) · Sobreira (Paredes) · Raiva (Castelo de Paiva)

Straight-line distance to the centroid of the municipality of Penafiel
11,4 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
1.225
Voters
1.015
Turnout
82,86% (2021: 82,45%)
Seats
9
ListVotes%Seats
CFRM
Confiança No Futuro de Rio Mau		55554,68%5
PS
Partido Socialista		38337,73%4
PCP-PEV
CDU - Coligação Democrática Unitária		656,40%0
Blank votes40,39%
Null votes80,79%

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

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 Padre Manuel Tavares Sousa, N.º 115
Rio Mau (PENAFIEL)
4575-627 RIO MAU
Telephone
255677116
Fax
255677746
Email
j.f.riomau@gmail.com
Website
www.jf-riomau.pt

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

More information

Coordinates
41,05194, -8,36333
Official website
www.jf-riomau.pt
Wikipedia
Rio Mau (Penafiel)
Wikidata
Q175819

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