El Casar is a municipality located in the province of Guadalajara, Castile-La Mancha, Spain. According to the 2013 census (INE), the municipality has a population of 11,635 inhabitants.Educational Centres El Casar has 5 state schools and one private school: State schools: CEIP Maestros de El Casar, CEIP El Coto, CEIP Los Arenales, IES Juan Gacía Valdemora y el IES Campiña Alta. Private School: Colegio Privado Montealbir.