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São João

Parish of the municipality of Ovar (Ovar), district of Aveiro.

São João had 6.042 residents in the 2021 Census, 23,4% of whom were aged 65 or over, and 12,8% of the population aged 15 or over had completed higher education. It borders 6 parishes and its centroid is 2,0 km in a straight line from the centroid of the municipality of Ovar.

Population (inh.)
  • 2.141 – 3.100
  • 3.380 – 3.746
  • 6.042
  • 6.474 – 11.922
  • 18.148
Density (inh./km²)
  • 206,8 – 210,2
  • 241,3 – 249,2
  • 377,5
  • 405,9 – 410,2
  • 1.300,1
Area (km²)
  • 8,6 – 9,2
  • 9,2 – 14,7
  • 15,0
  • 16,1 – 26,8
  • 48,1
Quantile classes · current parish
Parish highlighted. Click a neighbouring parish to open its page. Geometry: CAOP2025, Direção-Geral do Território (simplified).

The 8 parishes of Ovar

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

#ParishPopulationArea (km²)Inhab./km²
1Arada3.10014,99206,8
2Cortegaça3.7469,23405,9
3Esmoriz11.9229,171.300,1
4Maceda3.38016,08210,2
5Ovar18.14848,08377,5
6São João6.04214,73410,2
7São Vicente de Pereira Jusã2.1418,59249,2
8Válega6.47426,83241,3
Code (DTMNFR)
011512
Resident population (2021)
6.042
Area
14,73 km²
Density
410,2 inh./km²
Share of the municipality (population)
11,0%
Rank in the municipality (population)
4th of 8

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
2.878 (47,6%)
Women
3.164 (52,4%)
Portuguese nationality
5.942 (98,3%)
Foreign nationality
100 (1,7%)
Ageing index
197,6 elderly per 100 young people
Private households
2.247
Dwellings
2.831
Classic family dwellings
2.831
Buildings
2.440
Buildings with 7 or more floors
0
With higher education (15+)
12,8% (684)
Unemployment rate †
8,32%
Active / employed population
2.873 / 2.634

Population by age group

Population by age group0-14 years: 715 (11,8%); 15-24 years: 684 (11,3%); 25-64 years: 3.230 (53,5%); 65+ years: 1.413 (23,4%)0-14715 · 11,8%15-24684 · 11,3%25-643.230 · 53,5%65+1.413 · 23,4%
Residents by age group and share of the total (6.042).
Age groupTotalMenWomen
0-14 years715356359
15-24 years684346338
25-64 years3.2301.5541.676
65+ years1.413622791

Source: INE, Censos 2021 — indicators 0014630, 0014631, 0014627, 0014623, 0014621, 0014635, 0014636, 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. † Unemployment rate calculated by us: (active population − employed population) ÷ active population × 100 (indicators 0014635 and 0014636, 2025 geography). 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

Ovar · Válega · Arada · São Miguel de Souto (Santa Maria da Feira) · São Vicente de Pereira Jusã · União das freguesias de Santa Maria da Feira, Travanca, Sanfins e Espargo (Santa Maria da Feira)

Straight-line distance to the centroid of the municipality of Ovar
2,0 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
5.650
Voters
3.131
Turnout
55,42%
Seats
13
ListVotes%Seats
PS
Partido Socialista		1.37043,76%7
PPD/PSD
Partido Social Democrata		75724,18%3
AGIR!
AGIR! Pelo desenvolvimento da Nossa Terra		51616,48%2
CH
CHEGA		2588,24%1
NC/PPM
MOVIMENTO 2030		611,95%0
PCP-PEV
CDU - Coligação Democrática Unitária		441,41%0
Blank votes712,27%
Null votes541,72%

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

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.

Heraldry

Coat of arms: escudo de azul, imagem de São João Baptista de carnação, vestido de pele de animal de sua cor, sustendo na mão direita uma concha de ouro e na esquerda o lábaro de prata com cruz firmada de vermelho e com cordeiro de prata deitado aos pés, acompanhado no cantão dextro do chefe de roda dentada de prata e, no cantão sinistro da campanha, de uma espiga de milho de ouro. Coroa mural de prata de quatro torres. Listel branco, com a legenda a negro: "São João - Ovar"

Flag: esquartelada de vermelho e amarelo. Cordão e borlas de ouro e vermelho. Haste e lança de ouro

Seal: nos termos da lei, com a legenda: "Junta de Freguesia de São João - Ovar".

Heraldic ordinance published by Edital n.º 749/2007, Diário da República n.º 176/2007, Série II de 2007-09-12 (issuer: Junta de Freguesia de São João). Excerpt of the official text (coat of arms, flag and seal), reproduced unchanged.

Parish-council contacts

Address
Praça do Poder Local
São João
3880-755 São João
Email
geral@jf-saojoao.pt

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

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