Population and Housing Censuses  
Gipuzkoa
Buildings mainly or exclusively for housing by municipality (with more than 50,000 inhabitants or provincial capitals), no. of real estate properties and year of construction (aggregate)
Units: buildings

	Total	Before 1900	1900 to 1920	1921 to 1940	1941 to 1950	1951 to 1960	1961 to 1970	1971 to 1980	1981 to 1990	1991 to 2001	2002 to 2011	
Total	
    20069  Donostia-San Sebastián	9,979	771	885	828	653	1,323	1,110	1,055	470	2,104	780	
    20045  Irun	3,810	282	152	457	242	300	343	594	227	774	439	
1	
    20069  Donostia-San Sebastián	3,558	315	193	270	271	391	231	238	171	1,247	231	
    20045  Irun	1,427	89	18	242	24	56	37	144	99	490	228	
2	
    20069  Donostia-San Sebastián	384	43	52	60	60	63	26	25	15	30	10	
    20045  Irun	265	27	14	60	24	28	18	36	17	32	9	
3	
    20069  Donostia-San Sebastián	329	22	25	31	25	75	83	39	7	20	2	
    20045  Irun	118	21	11	16	13	18	6	13	8	9	3	
4	
    20069  Donostia-San Sebastián	247	20	19	29	28	47	35	19	14	23	13	
    20045  Irun	131	14	7	23	13	14	18	16	9	14	3	
5 to 9	
    20069  Donostia-San Sebastián	1,733	134	135	95	116	267	232	212	119	295	128	
    20045  Irun	636	52	45	41	82	69	66	83	25	112	61	
10 to 19	
    20069  Donostia-San Sebastián	2,316	207	382	226	114	288	225	186	115	329	244	
    20045  Irun	856	53	32	57	56	87	162	176	44	98	91	
20 to 29	
    20069  Donostia-San Sebastián	872	28	68	87	25	95	146	162	20	129	112	
    20045  Irun	271	17	19	17	18	18	28	82	15	19	38	
30 to 39	
    20069  Donostia-San Sebastián	264	2	8	26	12	52	47	70	5	20	22	
    20045  Irun	77	6	5	1	10	8	5	32	8	..	2	
40 or more	
    20069  Donostia-San Sebastián	276	..	3	4	2	45	85	104	4	11	18	
    20045  Irun	29	3	1	..	2	2	3	12	2	..	4	
Notes:
Source: National Statistics Institute