Libraries Statistics National results Libraries (administrative units) by type of library and average number of weekly hours open to the public. Units: number of libraries Total Libraries Up to 10 Over 10 and up to 20 Over 20 and up to 40 More than 40 Total 6,717 831 1,471 3,146 1,269 National 1 . . . 1 Autonomous communities central Libraries 8 . . 2 6 Public 4,070 504 1,173 1,703 690 For specific groups of users (non-specialised) 216 35 37 84 60 Libraries in higher education institutions 297 8 19 78 192 Specialised Libraries: Total 2,125 284 242 1,279 320 Specialised Libraries: In religious institutions 167 53 39 58 17 Specialised Libraries: In the administration 423 45 38 295 45 Specialised Libraries: In research centres 129 25 11 83 10 Specialised Libraries: In professional associations and colleges 274 37 39 157 41 Specialised Libraries: In commercial companies or firms 44 8 . 21 15 Specialised Libraries: In archives and museums 341 38 40 224 39 Specialised Libraries: In health centres 139 6 7 71 55 Specialised Libraries: Other specialised Libraries 608 72 68 370 98 Notes: .Data protected by statistical secrecy Source: National Statistics Institute