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Seia

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		2011		2021		2024		2025
		Seia	Portugal	Seia	Portugal	Seia	Portugal	Seia	Portugal
Resisent population (6)	Resisent population (6)	24,917	10,558,950	┴21,545	┴10,599,117	21,792	11,387,222	21,597	11,424,031
Area in km²	Area in km²	436	92,212	436	92,225	436	92,225	436	92,225
Parishes	Parishes	29	4,260	21	3,092	21	3,092	-	-
Young people (%) (6) aged under 15	Young people (%) (6) aged under 15	10.7	15.0	┴9.9	┴13.1	9.9	12.7	9.9	12.5
Working-age population (%) (6) 15 to 64 years	Working-age population (%) (6) 15 to 64 years	63.7	66.0	┴56.0	┴63.6	55.2	64.3	54.7	64.3
Elderly people (%) (6) 65 years and older	Elderly people (%) (6) 65 years and older	25.5	18.9	┴34.1	┴23.2	34.9	23.0	35.4	23.2
Ageing index (6)	Ageing index (6)	253	128	┴345	┴178	353	182	364	189
Births (4)	Births (4)	147	96,856	125	79,582	132	84,642	110	87,764
Deaths	Deaths	341	102,848	404	124,841	381	118,396	398	121,817
Infant mortality rate (‰) (6) deaths of children under 1 year of age per 1000 births	Infant mortality rate (‰) (6) deaths of children under 1 year of age per 1000 births	6.8	3.1	0.0	2.4	0.0	3.0	0.0	2.8
Natural increase (6) natural increase	Natural increase (6) natural increase	-194	-5,992	-279	-45,259	-249	-33,754	-288	-34,053
Marriages	Marriages	92	36,035	44	29,057	43	36,633	50	37,714
Divorces	Divorces	56	26,751	23	17,279	Pro11	Pro15,743	-	-
Hospitals	Hospitals	1	226	1	240	Pro1	Pro242	-	-
Pharmacies (3)	Pharmacies (3)	10	3,074	10	3,112	10	3,123	10	3,118
Median value of bank evaluation per m²	Median value of bank evaluation per m²	559	865	654	1,231	844	1,662	884	1,949
new buildings completed for family housing	new buildings completed for family housing	29	15,434	11	10,169	16	11,537	-	-
Schools in pre-school education	Schools in pre-school education	31	6,812	12	5,774	11	5,678	-	-
Schools in 1st cycle education	Schools in 1st cycle education	15	5,221	6	4,057	6	4,005	-	-
Schools in 2nd cycle education	Schools in 2nd cycle education	5	1,170	3	1,180	3	1,182	-	-
Schools in 3rd cycle education	Schools in 3rd cycle education	6	1,516	4	1,440	3	1,406	-	-
Schools in upper-secondary education	Schools in upper-secondary education	2	937	3	967	3	970	-	-
Non-higher education students (1)	Non-higher education students (1)	4,084	1,925,956	2,521	1,575,679	2,445	1,620,555	-	-
Institutions in higher education	Institutions in higher education	1	300	1	288	1	288	1	292
Higher education students (1)	Higher education students (1)	380	396,268	300	411,995	223	448,235	247	456,032
Museums	Museums	3	377	3	419	3	475	-	-
Live show performances	Live show performances	60	25,871	34	24,469	50	44,941	-	-
Movie screens	Movie screens	1	558	1	547	1	563	1	579
Town Council expenditure on culture and sports €, Thousands	Town Council expenditure on culture and sports €, Thousands	2,978	679,396	2,797	814,797	2,796	1,231,553	-	-
Non-financial enterprises (5)	Non-financial enterprises (5)	2,081	1,113,559	2,259	1,342,116	2,321	1,576,606	-	-
Personnel employed by non-financial enterprises (5)	Personnel employed by non-financial enterprises (5)	5,440	3,631,747	5,191	4,236,222	5,669	4,944,491	-	-
Personnel employed of the four major enterprises in the municipality (%) Non financial enterprises	Personnel employed of the four major enterprises in the municipality (%) Non financial enterprises	12	2	11	2	11	2	-	-
Turnover of the four major enterprises in the municipality (%) Non financial enterprises	Turnover of the four major enterprises in the municipality (%) Non financial enterprises	45	5	57	5	53	5	-	-
Banks, Savings Banks	Banks, Savings Banks	10	5,834	7	3,266	7	2,751	-	-
Mutual Agricultural Lending Banks	Mutual Agricultural Lending Banks	4	748	4	681	4	648	-	-
ATMs	ATMs	26	13,911	25	12,486	28	12,459	27	12,369
Social Security pensions old age, disability and survivors	Social Security pensions old age, disability and survivors	9,919	2,943,654	9,350	2,977,307	9,338	3,049,678	-	-
Public Administration Retirement Fund pensions	Public Administration Retirement Fund pensions	1,007	591,777	1,156	647,483	1,209	662,667	1,219	669,351
Beneficiaries of the Social Integration Income (SII)	Beneficiaries of the Social Integration Income (SII)	995	447,088	608	262,210	584	226,119	604	213,723
Unemployed registered at public employment offices as a % of resident population aged 15 to 64	Unemployed registered at public employment offices as a % of resident population aged 15 to 64	9	8	┴5	┴6	5	4	6	4
Unemployed registered at public employment offices	Unemployed registered at public employment offices	1,459	551,944	635	386,230	647	318,687	703	309,939
Employees in Local Government	Employees in Local Government	265	131,522	372	-	-	-	-	-
Crimes registered by the police forces per thousand inhabitants (6)	Crimes registered by the police forces per thousand inhabitants (6)	28.0	39.3	┴31.1	┴28.7	35.6	31.4	Pro33.2	Pro32.1
Electric energy consumption per inhabitant (kWh) (6)	Electric energy consumption per inhabitant (kWh) (6)	3,046.1	4,652.1	┴Pro3,033.5	┴Pro4,591.0	Pro3,194.8	Pro4,549.0	-	-
Urban waste selectively collected per inhabitant (kg)	Urban waste selectively collected per inhabitant (kg)	31.9	71.3	┴198.2	┴114.3	136.3	121.9	-	-
Municipalities expenditure on environment per capita (6)	Municipalities expenditure on environment per capita (6)	98	57	┴117	┴84	Pre128	Pre86	-	-
Tourist accommodations (2)	Tourist accommodations (2)	2	2,019	47	6,271	58	8,173	-	-

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Sources

Sources/Entities: INE, AIMA/MP, APA/MA, BP, CGA/MTSSS-MF, DGAL/MCT, DGEEC/MECI, DGEG/MAE, DGPJ/MJ, DGS/MS, DGT/MCT-MAE, ICA/SEC, IEFP/MTSSS-ME, II/MTSSS, ISS/MTSSS, SIBS, PORDATA

Notes

When a methodological change occurs, a break in series is displayed.
More information about these figures is available by clicking on each indicator.

(1) - The year presented corresponds to the last year of the pair of academic years.

(2) - From 2014 (inclusive) includes the new Local Housing units and the housing tourism and rural area tourism establishments.

(3) - Includes mobile medicine depots.

(4) - The values presented refer to the municipality of residence of the mother (not that of the child's birth).

(5) - The values presented include enterprises, sole proprietors and the self employed. They exclude insurance and financial activities, Public Administration and Defence and Compulsory Social Security.

(6) - The figures presented between 2021 and 2024 were revised by INE as part of the revision of the Resident Population Estimates, released by the entity on June 22, 2026.