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Trezói

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Parish of the municipality of Mortágua (Mortágua), district of Viseu.

Trezói had 343 residents in the 2021 Census, 46,4% of whom were aged 65 or over, and 6,6% of the population aged 15 or over had completed higher education. It borders 6 parishes and its centroid is 7,9 km in a straight line from the centroid of the municipality of Mortágua.

Population (inh.)
  • 284 – 343
  • 489
  • 859 – 984
  • 2.189
  • 3.815
Density (inh./km²)
  • 17,6 – 19,6
  • 23,8
  • 26,4 – 32,6
  • 34,1
  • 73,2
Area (km²)
  • 8,7 – 17,5
  • 18,5
  • 41,3 – 48,9
  • 52,1
  • 64,2
Quantile classes · current parish
Parish highlighted. Click a neighbouring parish to open its page. Geometry: CAOP2025, Direção-Geral do Território (simplified).

The 7 parishes of Mortágua

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

#ParishPopulationArea (km²)Inhab./km²
1Cercosa2848,7232,6
2Espinho98441,3423,8
3Marmeleira48918,5126,4
4Pala85948,8617,6
5Sobral2.18964,1534,1
6Trezói34317,5119,6
7União das freguesias de Mortágua, Vale de Remígio, Cortegaça e Almaça3.81552,1073,2
Code (DTMNFR)
180809
Resident population (2021)
343
Area
17,51 km²
Density
19,6 inh./km²
Share of the municipality (population)
3,8%
Rank in the municipality (population)
6th of 7

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
161 (46,9%)
Women
182 (53,1%)
Portuguese nationality
337 (98,3%)
Foreign nationality
6 (1,7%)
Ageing index
662,5 elderly per 100 young people
Private households
157
Average household size *
2,18 people
Dwellings
258
Classic family dwellings
257
Buildings
254
Buildings with 7 or more floors
0
With higher education (15+)
6,6% (21)
Unemployment rate *
3,42% (H 0,00% · M 7,27%)
Active / employed population
117 / 113

Population by age group

Population by age group0-14 years: 24 (7,0%); 15-24 years: 14 (4,1%); 25-64 years: 146 (42,6%); 65+ years: 159 (46,4%)0-1424 · 7,0%15-2414 · 4,1%25-64146 · 42,6%65+159 · 46,4%
Residents by age group and share of the total (343).
Age groupTotalMenWomen
0-14 years241410
15-24 years14113
25-64 years1467076
65+ years1596693

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

Straight-line distance to the centroid of the municipality of Mortágua
7,9 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
344
Voters
216
Turnout
62,79% (2021: 59,15%)
Seats
7
ListVotes%Seats
PS
Partido Socialista
17581,02%6
PPD/PSD
Partido Social Democrata
3918,06%1
Blank votes20,93%
Null votes00,00%

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.

Parish-council contacts

Address
Rua Principal, N.º 21
Trezói (MORTÁGUA)
3450-386 TREZÓI
Telephone
231930819
Email
freguesia.trezoi@gmail.com

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

More information

Coordinates
40,39778, -8,33722
Wikipedia
Trezoi
Wikidata
Q74847

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