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;6,458;729;1,399;2,996;1,334; National;1;0;0;0;1; Autonomous communities central Libraries;7;0;0;1;6; Public;4,001;417;1,133;1,701;750; For specific groups of users (non-specialised);198;33;30;73;62; Libraries in higher education institutions;269;7;12;69;181; Specialised Libraries: Total;1,982;272;224;1,152;334; Specialised Libraries: In religious institutions;187;75;33;66;13; Specialised Libraries: In the administration;368;25;30;269;44; Specialised Libraries: In research centres;112;12;15;72;13; Specialised Libraries: In professional associations and colleges;244;36;34;141;33; Specialised Libraries: In commercial companies or firms;33;5;2;14;12; Specialised Libraries: In archives and museums;351;35;43;231;42; Specialised Libraries: In health centres;133;7;4;65;57; Specialised Libraries: Other specialised Libraries;554;77;63;294;120; Notes: Source: National Statistics Institute