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União das freguesias de Alto do Seixalinho, Santo André e Verderena

Parish of the municipality of Barreiro (Barreiro), district of Setúbal.

União das freguesias de Alto do Seixalinho, Santo André e Verderena had 41.296 residents in the 2021 Census, 27,8% of whom were aged 65 or over, and 17,0% of the population aged 15 or over had completed higher education. It borders 6 parishes and its centroid is 2,4 km in a straight line from the centroid of the municipality of Barreiro.

Population (inh.)
  • 3.642
  • 11.594
  • 21.813
  • 41.296
Density (inh./km²)
  • 264,3
  • 1.505,7
  • 2.818,2
  • 5.751,5
Area (km²)
  • 7,2
  • 7,7
  • 7,7
  • 13,8
Quantile classes · current parish
Parish highlighted. Click a neighbouring parish to open its page. Geometry: CAOP2025, Direção-Geral do Território (simplified).

The 4 parishes of Barreiro

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

#ParishPopulationArea (km²)Inhab./km²
1Santo António da Charneca11.5947,701.505,7
2União das freguesias de Alto do Seixalinho, Santo André e Verderena41.2967,185.751,5
3União das freguesias de Barreiro e Lavradio21.8137,742.818,2
4União das freguesias de Palhais e Coina3.64213,78264,3
Code (DTMNFR)
150409
Resident population (2021)
41.296
Area
7,18 km²
Density
5.751,5 inh./km²
Share of the municipality (population)
52,7%
Rank in the municipality (population)
1st of 4

Simplified designation (CAOP2025): “Alto do Seixalinho, Santo André e Verderena”.

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
19.235 (46,6%)
Women
22.061 (53,4%)
Portuguese nationality
37.603 (91,1%)
Foreign nationality
3.693 (8,9%)
Ageing index
228,6 elderly per 100 young people
Private households
18.676
Average household size *
2,20 people
Dwellings
22.423
Classic family dwellings
22.405
Buildings
4.065
Buildings with 7 or more floors
158
With higher education (15+)
17,0% (6.186)
Unemployment rate *
10,74% (H 10,31% · M 11,16%)
Active / employed population
18.476 / 16.492

Population by age group

Population by age group0-14 years: 5.013 (12,1%); 15-24 years: 4.162 (10,1%); 25-64 years: 20.660 (50,0%); 65+ years: 11.461 (27,8%)0-145.013 · 12,1%15-244.162 · 10,1%25-6420.660 · 50,0%65+11.461 · 27,8%
Residents by age group and share of the total (41.296).
Age groupTotalMenWomen
0-14 years5.0132.5752.438
15-24 years4.1622.0822.080
25-64 years20.6609.81110.849
65+ years11.4614.7676.694

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 Barreiro
2,4 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
35.383
Voters
18.482
Turnout
52,23% (2021: 49,10%)
Seats
19
ListVotes%Seats
PS
Partido Socialista
9.56051,73%11
PCP-PEV
CDU - Coligação Democrática Unitária
3.00316,25%3
CH
CHEGA
2.82115,26%3
PPD/PSD.CDS-PP
AD - COLIGAÇÃO PSD/CDS
1.6018,66%2
BE.L
Por uma Esquerda Livre - Coligação Bloco de Esquerda e LIVRE
5673,07%0
IL
Iniciativa Liberal
3031,64%0
PAN
PESSOAS - ANIMAIS - NATUREZA
2421,31%0
Blank votes2271,23%
Null votes1580,85%

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 Bartolomeu Dias, N.º 7 - D
Barreiro (BARREIRO)
2830-040 ALTO DO SEIXALINHO
Telephone
212091553
Email
geral@jf-assav.pt
Website
www.jf-assav.pt

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

More information

Coordinates
38,65070, -9,06060
Wikipedia
Alto do Seixalinho, Santo André e Verderena
Wikidata
Q18467967

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