Surname of the person: SIERRA. By areas

Surname of the person: SIERRA By areas of the general territorial Plan of Catalonia. 2025
		As first surname		As second surname
	Position	frequency	‰	frequency	‰
Metropolità	113	4,131	0.80	4,191	0.82
Comarques Gironines	175	488	0.60	478	0.59
Camp de Tarragona	205	322	0.57	310	0.55
Terres de l'Ebre	455	58	0.30	66	0.35
Ponent	374	128	0.34	153	0.40
Comarques Centrals	307	193	0.45	171	0.40
Alt Pirineu i Aran	417	30	0.39	25	0.32
Penedès	186	342	0.65	325	0.62
Total	132	5,692	0.70	5,719	0.70
Source: Idescat, based on the INE Annual Population Census.

Disaggregation criteria