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;6,636;769;1,439;3,129;1,299; National;1;.;.;.;1; Autonomous communities central Libraries;7;.;.;2;5; Public;4,035;440;1,153;1,724;718; For specific groups of users (non-specialised);198;31;34;80;53; Libraries in higher education institutions;300;8;10;80;202; Specialised Libraries: Total;2,095;290;242;1,243;320; Specialised Libraries: In religious institutions;185;66;43;62;14; Specialised Libraries: In the administration;394;42;30;274;48; Specialised Libraries: In research centres;123;22;11;77;13; Specialised Libraries: In professional associations and colleges;267;38;34;157;38; Specialised Libraries: In commercial companies or firms;42;7;.;21;14; Specialised Libraries: In archives and museums;356;33;41;237;45; Specialised Libraries: In health centres;138;8;8;72;50; Specialised Libraries: Other specialised Libraries;590;74;75;343;98; Notes: .Data protected by statistical secrecy Source: National Statistics Institute