Surname of the person: SIERRA. By counties

Surname of the person: SIERRA By counties. 2025
		As first surname		As second surname
	Position	frequency	‰	frequency	‰
Alt Camp	285	21	0.45	28	0.59
Alt Empordà	149	101	0.67	95	0.63
Alt Penedès	363	49	0.42	46	0.40
Alt Urgell	829	7	0.33	..	..
Alta Ribagorça	177	6	1.48	..	..
Anoia	267	60	0.46	78	0.60
Aran	549	..	..	6	0.56
Bages	272	98	0.52	79	0.42
Baix Camp	172	139	0.67	144	0.69
Baix Ebre	469	20	0.24	29	0.34
Baix Empordà	124	119	0.82	112	0.77
Baix Llobregat	103	828	0.97	782	0.91
Baix Penedès	93	127	1.05	107	0.89
Barcelonès	104	1,959	0.82	1,994	0.83
Berguedà	493	8	0.19	19	0.46
Cerdanya	540	6	0.30	6	0.30
Conca de Barberà	693	5	0.24	5	0.24
Garraf	181	108	0.66	94	0.57
Garrotxa	431	22	0.35	24	0.38
Gironès	198	114	0.55	130	0.62
Maresme	177	299	0.63	278	0.58
Moianès	506	5	0.34	5	0.34
Montsià	359	30	0.41	28	0.38
Noguera	614	6	0.15	16	0.40
Osona	349	76	0.46	65	0.39
Pallars Jussà	257	10	0.74	8	0.59
Pla d'Urgell	1,074	6	0.16	5	0.13
Pla de l'Estany	445	15	0.44	11	0.33
Priorat	562	..	..	4	0.42
Ribera d'Ebre	421	7	0.31	9	0.40
Ripollès	586	7	0.27	8	0.31
Segarra	546	5	0.22	8	0.35
Segrià	256	106	0.48	114	0.51
Selva	191	110	0.59	98	0.52
Solsonès	480	6	0.39	5	0.32
Tarragonès	219	156	0.56	129	0.46
Urgell	921	4	0.10	9	0.23
Vallès Occidental	129	765	0.79	813	0.84
Vallès Oriental	158	278	0.64	322	0.75
Total	132	5,692	0.70	5,719	0.70
Source: Idescat, based on the INE Annual Population Census.
Note: Only shows counties with 4 or more people with the selected surname.

Disaggregation criteria