Municipalities of Spain by social Security affiliates

Name: Municipalities of Spain by social Security affiliates, March 2026
Creator: Institut d'Estadística de Catalunya
License: Idescat open data terms (attribution required)

Barcelona had the highest social Security affiliates of 947 municipalities in March 2026, at 755,920. Sant Jaume de Frontanyà had the lowest, at 10. The median was 435. Source: the Institut d'Estadística de Catalunya.

Highest755,920Barcelona

Lowest10Sant Jaume de Frontanyà

Median435947 municipalities

Top 40 municipalities, March 2026

CSV Chart (SVG)

persons. Source: Idescat. Retrieved 2026-10-07.

Full ranking

Rank	Municipalities	March 2026 persons	Change on March 2025
1	Barcelona	755,920	+0.7%
2	L'Hospitalet de Llobregat	124,720	+2.7%
3	Terrassa	104,920	+2.3%
4	Sabadell	99,780	+2.6%
5	Badalona	98,480	+1.5%
6	Lleida	60,185	+2.6%
7	Tarragona	57,300	+3.7%
8	Mataró	57,080	+1.7%
9	Santa Coloma de Gramenet	50,875	+1.2%
10	Girona	48,330	+0.9%
11	Reus	46,140	+4.1%
12	Sant Cugat del Vallès	44,540	+0.5%
13	Cornellà de Llobregat	41,490	+2.4%
14	Sant Boi de Llobregat	38,090	+1.5%
15	Rubí	37,180	+1.4%
16	Manresa	32,960	+2.9%
17	Viladecans	32,420	+3%
18	Vilanova i la Geltrú	30,795	+3.7%
19	Castelldefels	30,420	+0.3%
20	El Prat de Llobregat	29,325	+1%
21	Granollers	29,310	+2.5%
22	Cerdanyola del Vallès	25,925	+0.8%
23	Mollet del Vallès	23,980	+2.1%
24	Vic	23,300	+2.4%
25	Sant Feliu de Llobregat	21,420	+1.4%
26	Gavà	21,240	+1.2%
27	Figueres	21,025	+2.8%
28	Esplugues de Llobregat	20,490	+2.6%
29	Vilafranca del Penedès	18,720	+1.9%
30	Ripollet	18,230	+1.5%
31	Olot	18,125	+2.1%
32	Igualada	17,680	+1.4%
33	Blanes	17,560	+4.2%
34	Montcada i Reixac	17,115	+2.4%
35	Sant Joan Despí	17,075	+1%
36	El Vendrell	16,820	+5.3%
37	Sant Adrià de Besòs	16,160	+2.7%
38	Lloret de Mar	15,965	+10.9%
39	Cambrils	15,695	+8.4%
40	Barberà del Vallès	15,470	+0.2%
41	Sant Pere de Ribes	14,215	+2%
42	Salt	14,030	+3.7%
43	Tortosa	13,540	+2.4%
44	Salou	13,340	+20.5%
45	Sitges	13,105	+1.2%
46	Molins de Rei	13,040	+1.4%
47	Calafell	12,900	+5.6%
48	Martorell	12,890	+3.2%
49	Sant Vicenç dels Horts	12,870	+1.3%
50	Premià de Mar	12,755	+0.4%
51	Sant Andreu de la Barca	12,565	+2.2%
52	Castellar del Vallès	12,250	+1.5%
53	Santa Perpètua de Mogoda	12,115	+1.9%
54	Pineda de Mar	12,030	+5.9%
55	Olesa de Montserrat	11,465	+1.8%
56	El Masnou	11,360	+1.5%
57	Vila-seca	10,570	+7.6%
58	Esparreguera	10,530	+2.5%
59	Valls	10,505	+1.5%
60	Palafrugell	10,275	+6.5%
61	Les Franqueses del Vallès	9,995	+2.9%
62	Banyoles	9,855	+2.1%
63	Sant Feliu de Guíxols	9,485	+4.2%
64	Sant Quirze del Vallès	9,455	+1.1%
65	Sant Just Desvern	9,405	+1%
66	Vilassar de Mar	9,355	0%
67	Parets del Vallès	9,065	+2.1%
68	Amposta	9,020	+2.3%
69	Cardedeu	8,970	+1.7%
70	Caldes de Montbui	8,845	+1%
71	Manlleu	8,730	+0.8%
72	Sant Celoni	8,480	+2%
73	Tàrrega	8,450	+2.6%
74	Calella	8,345	+4.9%
75	Malgrat de Mar	8,325	+8.2%
76	La Garriga	8,255	+1.6%
77	Lliçà d'Amunt	8,245	+2.3%
78	Palamós	8,225	+5%
79	Tordera	8,175	+4.7%
80	Piera	8,085	+4.4%
81	Roses	8,010	+7.4%
82	Cubelles	7,805	+3.2%
83	Vallirana	7,800	+2.1%
84	Montornès del Vallès	7,790	+1.5%
85	Corbera de Llobregat	7,735	+1.7%
86	Palau-solità i Plegamans	7,480	+0.5%
87	Torredembarra	7,385	+4.9%
88	Arenys de Mar	7,095	+1.1%
89	Balaguer	7,055	+3.1%
89	Mollerussa	7,055	+1.4%
91	Canovelles	6,980	+1.8%
92	Berga	6,930	+2.1%
92	Torelló	6,930	+1%
94	Santa Coloma de Farners	6,490	+0.8%
95	Canet de Mar	6,485	+2.5%
96	Cunit	6,415	+4.7%
97	Castellbisbal	6,405	+1.7%
98	Abrera	6,275	+1%
99	Montgat	6,090	-0.1%
100	La Ràpita	6,070	+2.1%
101	Argentona	5,960	+1.8%
102	Sant Sadurní d'Anoia	5,925	-0.5%
103	Mont-roig del Camp	5,820	+6.7%
104	La Llagosta	5,815	0%
105	Pallejà	5,775	+2.3%
106	La Roca del Vallès	5,610	+2%
107	Vilanova del Camí	5,595	+1.9%
108	Torroella de Montgrí	5,390	+6.7%
109	Llinars del Vallès	5,325	+2.3%
110	Cassà de la Selva	5,270	+1.2%
111	Calonge i Sant Antoni	5,235	+6.1%
112	Sant Andreu de Llavaneres	5,220	+0.1%
113	Castell d'Aro, Platja d'Aro i s'Agaró	5,145	+7.1%
114	Badia del Vallès	5,120	+2.1%
115	Bigues i Riells del Fai	5,100	+2.4%
116	La Bisbal d'Empordà	5,075	+2.8%
117	Sant Joan de Vilatorrada	5,065	+2%
118	Castelló d'Empúries	4,975	+4.7%
119	Alcarràs	4,910	+3%
120	Masquefa	4,900	+2.7%
121	Deltebre	4,860	+4.1%
122	Premià de Dalt	4,785	+0.4%
123	Matadepera	4,755	+1.7%
123	Palafolls	4,755	+2.9%
125	Sentmenat	4,690	+1.4%
126	Cervelló	4,680	+2.4%
127	L'Ametlla del Vallès	4,655	+0.9%
128	Tiana	4,640	+2.2%
129	Puigcerdà	4,610	+3.1%
129	Ripoll	4,610	+0.2%
131	Santa Maria de Palautordera	4,600	+1.5%
132	La Seu d'Urgell	4,520	+1.6%
133	Sant Fruitós de Bages	4,475	+0.8%
134	Arenys de Munt	4,390	+0.9%
135	Sant Esteve Sesrovires	4,375	+3.4%
136	Cervera	4,370	+3.1%
137	Solsona	4,330	+0.9%
138	Sant Fost de Campsentelles	4,300	+2%
139	Polinyà	4,295	+1.5%
140	Alella	4,285	-0.6%
141	Llagostera	4,270	+2%
142	L'Escala	4,250	+7.1%
143	Vilassar de Dalt	4,225	+1.1%
144	Tona	4,195	+1.5%
145	Santa Coloma de Cervelló	4,190	+2.3%
146	Sant Vicenç de Castellet	4,185	0%
147	Santa Margarida de Montbui	4,165	+1.7%
148	Montmeló	4,140	+1%
149	Caldes de Malavella	4,055	+3.2%
150	Guissona	3,990	+2.6%
150	Vacarisses	3,990	+3.6%
152	Vidreres	3,955	+3.5%
153	Gelida	3,840	+2%
154	Santa Eulàlia de Ronçana	3,815	+2.6%
155	Centelles	3,765	+0.9%
156	Viladecavalls	3,725	-0.1%
157	Begues	3,710	+1.9%
158	Santpedor	3,635	+1.3%
159	Maçanet de la Selva	3,620	+5.4%
160	Alcanar	3,605	+0.7%
161	Cabrils	3,600	+0.8%
162	Roquetes	3,575	+2.4%
163	Santa Margarida i els Monjos	3,425	+0.1%
164	Roda de Berà	3,415	+5.9%
165	Montblanc	3,370	+1%
166	Sant Feliu de Codines	3,345	+1.5%
167	Sils	3,330	+2%
168	Taradell	3,300	+1.7%
169	Lliçà de Vall	3,280	+0.9%
170	Alpicat	3,265	+2.7%
171	Roda de Ter	3,250	+1.9%
172	Torrelles de Llobregat	3,180	+1.9%
173	Sant Antoni de Vilamajor	3,165	+1.6%
174	Moià	3,160	+1%
175	Dosrius	3,140	+1.9%
176	Teià	3,095	+1.8%
177	Riudoms	3,050	+2.5%
178	Sant Vicenç de Montalt	3,045	+1.7%
179	Vielha e Mijaran	3,040	+3.6%
180	Vandellòs i l'Hospitalet de l'Infant	2,985	+4.7%
181	Arbúcies	2,980	+3.3%
182	Vilanova del Vallès	2,935	+2.3%
183	Celrà	2,860	+1.2%
184	Sallent	2,850	-0.3%
185	Artés	2,835	+1.6%
186	Constantí	2,780	+3.9%
187	La Canonja	2,775	+0.9%
188	Navarcles	2,770	-0.2%
189	Les Borges Blanques	2,750	+3%
190	Navàs	2,740	+2.2%
191	Sarrià de Ter	2,730	+3.4%
192	L'Ametlla de Mar	2,710	+4.4%
193	Almacelles	2,705	+1.7%
194	La Selva del Camp	2,675	+2.7%
194	Santa Cristina d'Aro	2,675	+2.3%
196	Canyelles	2,670	+3.9%
197	Tossa de Mar	2,650	+18.3%
198	Sant Hilari Sacalm	2,600	+1.2%
199	El Catllar	2,595	+4.2%
200	Anglès	2,560	+1.8%
201	Vilafant	2,545	+1%
202	Agramunt	2,530	-0.8%
203	Sant Pere de Vilamajor	2,515	+1%
204	Altafulla	2,510	+3.3%
204	Bescanó	2,510	+1%
206	Els Pallaresos	2,490	+3.3%
207	Collbató	2,455	+3.8%
207	Súria	2,455	+0.6%
209	Torrefarrera	2,425	-0.2%
209	Tremp	2,425	-0.6%
211	Alcover	2,415	+2.8%
211	Cabrera de Mar	2,415	+1.7%
213	Sant Pol de Mar	2,390	+2.8%
214	Porqueres	2,380	+1.1%
215	Capellades	2,330	-0.4%
215	L'Arboç	2,330	+1.7%
217	Bellpuig	2,285	+2%
218	Martorelles	2,270	+3.9%
219	Riells i Viabrea	2,250	+5.4%
220	Móra d'Ebre	2,240	+4.2%
221	Ulldecona	2,225	+0.9%
222	El Papiol	2,180	+3.1%
223	Vilablareix	2,170	+5.6%
224	Llançà	2,135	+2.9%
225	Sant Climent de Llobregat	2,100	+2.2%
226	La Pobla de Mafumet	2,070	+3%
227	Hostalric	2,065	+0.7%
228	Quart	2,035	+3.6%
229	Sant Gregori	2,025	+2%
230	L'Aldea	1,990	+2.3%
231	Gironella	1,985	+1.8%
231	Olivella	1,985	+4.7%
233	La Sénia	1,920	+1.3%
234	Olèrdola	1,915	+3%
234	Seva	1,915	+1.1%
236	Castellbell i el Vilar	1,900	+3%
237	Balenyà	1,880	+1.6%
237	El Morell	1,880	+7.1%
237	La Torre de Claramunt	1,880	+3.9%
240	Sant Cebrià de Vallalta	1,860	+6.9%
241	El Pont de Vilomara i Rocafort	1,855	+0.3%
242	Sant Julià de Ramis	1,840	+1.9%
243	La Bisbal del Penedès	1,835	+6.4%
244	Puig-reig	1,820	0%
245	Breda	1,805	-0.3%
245	Sant Hipòlit de Voltregà	1,805	+2.6%
247	Begur	1,745	+1.2%
247	Cardona	1,745	+1.2%
249	Sant Julià de Vilatorta	1,740	+2.7%
250	Santa Susanna	1,730	+3.6%

Showing the top 250 of 947. The CSV download has every row.

Other periods

About this ranking

Workers registered with Social Security, by place of residence or work centre as stated by the source.

Every value in the ranking comes from the same publisher and the same period, so the municipalities are compared on one definition. Equal values share a rank.

How to cite

Institut d'Estadística de Catalunya (Idescat). Afiliats a la Seguretat Social per municipi de residència (afi). https://www.idescat.cat/pub/?id=afi. Retrieved 2026-10-07.

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Questions

Which municipality has the highest social Security affiliates?

Barcelona, with 755,920 in March 2026, according to the Institut d'Estadística de Catalunya.

Which municipality has the lowest social Security affiliates?

Sant Jaume de Frontanyà, with 10 in March 2026.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: Institut d'Estadística de Catalunya, Afiliats a la Seguretat Social per municipi de residència (afi). Retrieved 2026-10-07.