| population | |
| Alfoz de Lloredo | 2514 |
| Ampuero | 4281 |
| Anievas | 351 |
| Arenas de Iguna | 1792 |
| Argonos | 1696 |
| Arnuero | 2115 |
| Arredondo | 522 |
| Barcena de Cicero | 4118 |
| Barcena de Pie de Concha | 758 |
| Bareyo | 2060 |
| Cabezon de la Sal | 8234 |
| Cabezon de Liebana | 707 |
| Cabuerniga | 1066 |
| Camaleno | 1029 |
| Camargo | 31594 |
| Campoo de Enmedio | 3798 |
| Campoo de Yuso | 703 |
| Cartes | 5558 |
| Castaneda | 2525 |
| Castro-Urdiales | 32522 |
| Cieza | 603 |
| Cillorigo de Liebana | 1338 |
| Colindres | 8140 |
| Comillas | 2439 |
| Corrales de Buelna, Los | 11519 |
| Corvera de Toranzo | 2159 |
| El Astillero | 17938 |
| Entrambasaguas | 4655 |
| Escalante | 766 |
| Guriezo | 2419 |
| Hazas de Cesto | 1526 |
| Hermandad de Campoo de Suso | 1756 |
| Herrerias | 639 |
| Lamason | 303 |
| population | |
| Laredo | 12094 |
| Liendo | 1290 |
| Lierganes | 2441 |
| Limpias | 1897 |
| Luena | 694 |
| Marina de Cudeyo | 5278 |
| Mazcuerras | 2127 |
| Medio Cudeyo | 7571 |
| Meruelo | 1798 |
| Miengo | 4677 |
| Miera | 424 |
| Molledo | 1610 |
| Noja | 2653 |
| Penagos | 1929 |
| Penarrubia | 367 |
| Pesaguero | 340 |
| Pesquera | 71 |
| Pielagos | 23211 |
| Polaciones | 252 |
| Polanco | 5486 |
| Potes | 1474 |
| Puente Viesgo | 2861 |
| Ramales de la Victoria | 2788 |
| Rasines | 1023 |
| Reinosa | 10071 |
| Reocin | 8318 |
| Ribamontan al Mar | 4496 |
| Ribamontan al Monte | 2186 |
| Rionansa | 1091 |
| Riotuerto | 1634 |
| Rozas de Valdearroyo, Las | 288 |
| Ruente | 1041 |
| Ruesga | 981 |
| Ruiloba | 805 |
| population | |
| San Felices de Buelna | 2355 |
| San Miguel de Aguayo | 174 |
| San Pedro del Romeral | 503 |
| San Roque de Riomiera | 412 |
| San Vicente de la Barquera | 4407 |
| Santa Cruz de Bezana | 12154 |
| Santa Maria de Cayon | 9123 |
| Santander | 178465 |
| Santillana del Mar | 4210 |
| Santiurde de Reinosa | 299 |
| Santiurde de Toranzo | 1604 |
| Santona | 11451 |
| Saro | 510 |
| Selaya | 2009 |
| Soba | 1319 |
| Solorzano | 1025 |
| Suances | 8451 |
| Tojos, Los | 428 |
| Torrelavega | 55297 |
| Tresviso | 74 |
| Tudanca | 163 |
| Udias | 852 |
| Val de San Vicente | 2844 |
| Valdaliga | 2317 |
| Valdeolea | 1133 |
| Valdeprado del Rio | 357 |
| Valderredible | 1086 |
| Valle de Villaverde | 355 |
| Vega de Liebana | 842 |
| Vega de Pas | 824 |
| Villacarriedo | 1752 |
| Villaescusa | 3755 |
| Villafufre | 1103 |
| Voto | 2798 |
 | Seve Ballesteros-Santander Airport | ~ 32.42 km |
| Bilbao Airport | ~ 89.51 km |
| Burgos Airport | ~ 95.14 km |
| Vitoria Airport | ~ 108.38 km |
| León Airport | ~ 149.41 km |
| Logroño-Agoncillo Airport | ~ 157.75 km |
| Asturias Airport | ~ 170.29 km |
| Valladolid Airport | ~ 176.81 km |
| San Sebastián Airport | ~ 180.14 km |
