Its population is 213,505 (2006). The area of the province covers 12.190 km². Its capital is Guadalajara, where nearly 35% of the province's population lives. There are 288 municipalities in Guadalajara, of which more than three-quarters are villages with populations less than 200.
From 16 to 20 July 2005 the province was devastated by a forest fire, known as the incendio de Guadalajara. Eleven firefighters died after a blowup. The fire was caused by hikers barbecuing.