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São Miguel de Acha

Parish of the municipality of Idanha-a-Nova (Idanha-a-Nova), district of Castelo Branco.

São Miguel de Acha had 514 residents in the 2021 Census, 50,4% of whom were aged 65 or over, and 13,0% of the population aged 15 or over had completed higher education. It borders 6 parishes and its centroid is 21,6 km in a straight line from the centroid of the municipality of Idanha-a-Nova.

Population (inh.)
  • 190 – 226
  • 230 – 437
  • 508 – 514
  • 551 – 1.007
  • 1.053 – 2.388
Density (inh./km²)
  • 1,6 – 3,8
  • 4,3 – 5,7
  • 6,2 – 7,6
  • 8,4 – 12,5
  • 14,8 – 16,6
Area (km²)
  • 13,6 – 30,5
  • 36,7 – 58,0
  • 63,3 – 128,4
  • 135,4 – 177,4
  • 266,6 – 284,8
Quantile classes · current parish
Parish highlighted. Click a neighbouring parish to open its page. Geometry: CAOP2025, Direção-Geral do Território (simplified).

The 13 parishes of Idanha-a-Nova

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

#ParishPopulationArea (km²)Inhab./km²
1Aldeia de Santa Margarida20113,6214,8
2Ladoeiro1.05363,2816,6
3Medelim23030,477,6
4Oledo28427,6710,3
5Penha Garcia551128,424,3
6Proença-a-Velha19058,003,3
7Rosmaninhal437266,591,6
8São Miguel de Acha51441,2612,5
9Toulões22636,736,2
10União das freguesias de Idanha-a-Nova e Alcafozes2.388284,788,4
11União das freguesias de Monfortinho e Salvaterra do Extremo508135,393,8
12União das freguesias de Monsanto e Idanha-a-Velha766152,735,0
13União das freguesias de Zebreira e Segura1.007177,395,7
Code (DTMNFR)
050514
Resident population (2021)
514
Area
41,26 km²
Density
12,5 inh./km²
Share of the municipality (population)
6,2%
Rank in the municipality (population)
6th of 13

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
252 (49,0%)
Women
262 (51,0%)
Portuguese nationality
475 (92,4%)
Foreign nationality
39 (7,6%)
Ageing index
681,6 elderly per 100 young people
Private households
247
Average household size *
2,07 people
Dwellings
607
Classic family dwellings
602
Buildings
598
Buildings with 7 or more floors
0
With higher education (15+)
13,0% (62)
Unemployment rate *
13,29% (H 13,33% · M 13,24%)
Active / employed population
143 / 124

Population by age group

Population by age group0-14 years: 38 (7,4%); 15-24 years: 20 (3,9%); 25-64 years: 197 (38,3%); 65+ years: 259 (50,4%)0-1438 · 7,4%15-2420 · 3,9%25-64197 · 38,3%65+259 · 50,4%
Residents by age group and share of the total (514).
Age groupTotalMenWomen
0-14 years382216
15-24 years201010
25-64 years19710493
65+ years259116143

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

Orca (Fundão) · Proença-a-Velha · Oledo · Aldeia de Santa Margarida · Lousa (Castelo Branco) · Penamacor (Penamacor)

Straight-line distance to the centroid of the municipality of Idanha-a-Nova
21,6 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
455
Voters
294
Turnout
64,62% (2021: 61,55%)
Seats
7
ListVotes%Seats
PS
Partido Socialista		19967,69%5
CH
CHEGA		7324,83%2
Blank votes124,08%
Null votes103,40%

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 Prata, perlo ondulado de azul e prata de três tiras ondadas, acompanhadas em chefe de balança de púrpura sustida por espada alçada de lâmina flamejante do mesmo, realçada de ouro e, nos flancos, por Cruz da Ordem de Cristo e crescente de vermelho. Coroa Muralnos termos da lei. Listel Branco, com a legenda a negro:"S. MIGUEL DE ACHA"

Flag: esquartelada de azul e branco. Cordão e borlas de prata e azul. Haste e lança de ouro

Seal: nos termos da Lei, com a legenda:"Junta de Freguesia de S. Miguel de Acha - Idanha-a-Nova".

Heraldic ordinance published by Aviso n.º 22281/2008, Diário da República n.º 161/2008, Série II de 2008-08-21 (issuer: Junta de Freguesia de São Miguel de Acha). Excerpt of the official text (coat of arms, flag and seal), reproduced unchanged.

Parish-council contacts

Address
Bairro do Chão do Castanheiro
São Miguel de Acha (IDANHA-A-NOVA)
6060-511 SÃO MIGUEL DE ACHA
Telephone
277937252
Fax
277937252
Email
jfsaomiguelacha@gmail.com
Website
www.jf-saomigueldeacha.pt

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

More information

Coordinates
40,01528, -7,32167
Wikipedia
São Miguel de Acha
Wikidata
Q1295030

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