The station opened on January 15, 1915 as Susai Station (周西駅?) on the Japanese Government Railways (JGR) Kisarazu Line. On May 24, 1919, the line was renamed the Hōjō Line, on April 15, 1929, it became the Bōsō Line, and on April 1, 1933, it became the Bōsōnishi Line. It became part of the Japan National Railways (JNR) after World War II. The station was renamed to Kimitsu Station on April 1, 1956, and the line was renamed the Uchibō Line from July 15, 1972. Kimitsu Station was absorbed into the JR East network upon the privatization of the Japan National Railways (JNR) on April 1, 1987.