Data pertaining to The 2005 European Constitution Referendum
Number of voters on voting lists by provinces and type of voter.
Units: voters

;Spaniards residents in Spain;Spaniards residents abroad;Total;
TOTAL;33,562,119;1,130,159;34,692,278;
Álava;244,238;3,161;247,399;
Albacete;294,536;5,151;299,687;
Alicante/Alacant;1,148,408;17,138;1,165,546;
Almería;413,029;19,911;432,940;
Ávila;138,490;5,155;143,645;
Badajoz;530,174;8,903;539,077;
Balears (Illes);680,072;9,948;690,020;
Barcelona;3,922,449;79,906;4,002,355;
Burgos;293,509;9,466;302,975;
Cáceres;335,366;11,487;346,853;
Cádiz;918,613;17,828;936,441;
Castellón/Castelló;399,072;4,373;403,445;
Ciudad Real;389,526;4,039;393,565;
Córdoba;621,635;13,542;635,177;
Coruña (A);948,086;110,487;1,058,573;
Cuenca;162,614;2,228;164,842;
Girona;469,574;7,595;477,169;
Granada;673,761;26,035;699,796;
Guadalajara;153,341;1,941;155,282;
Guipúzcoa;566,488;14,097;580,585;
Huelva;375,808;4,920;380,728;
Huesca;172,669;4,233;176,902;
Jaén;518,703;8,271;526,974;
León;420,210;29,667;449,877;
Lleida;301,436;10,454;311,890;
Rioja (La);228,827;7,028;235,855;
Lugo;308,744;38,685;347,429;
Madrid;4,320,247;143,011;4,463,258;
Málaga;1,020,630;26,187;1,046,817;
Murcia;930,321;17,272;947,593;
Navarra;454,349;13,003;467,352;
Ourense;287,541;68,095;355,636;
Asturias;924,058;62,155;986,213;
Palencia;147,285;4,713;151,998;
Palmas (Las);727,411;14,000;741,411;
Pontevedra;765,781;89,666;855,447;
Salamanca;293,022;19,409;312,431;
S.C.Tenerife;685,527;46,390;731,917;
Cantabria;463,025;18,143;481,168;
Segovia;122,300;2,155;124,455;
Sevilla;1,421,339;19,771;1,441,110;
Soria;75,273;3,006;78,279;
Tarragona;514,752;8,173;522,925;
Teruel;112,339;3,256;115,595;
Toledo;452,148;5,982;458,130;
Valencia/València;1,856,424;32,348;1,888,772;
Valladolid;424,809;7,481;432,290;
Vizcaya;949,484;21,024;970,508;
Zamora;169,904;11,621;181,525;
Zaragoza;713,742;12,667;726,409;
Ceuta;54,595;2,086;56,681;
Melilla;46,435;2,896;49,331;
Notes:
Source: National Statistics Institute