According to Ottoman Cadastral Record Books, Hacılar village is one of the villages affiliated to Cebel-i Erciyes Commune. Hacılar village which continued to develop also in republic period became municipality in 1930 and district in 1931. It became county with the law numbered 3647 published in Official Gazette dated 18.05.1990 and legally started its activities on 09.09.1991. By having been included into the borders of Metropolitan Municipality of Kayseri by 01.01.2005, it has become one of five central county of Kayseri.