Mito station opened on the Mito Line on 16 January 1889.
The Suigun Line opened on 16 November 1897.
The station was absorbed into the JR East network upon the privatization of the Japanese National Railways (JNR) on 1 April 1987.
A new station building was completed in July 1994.

The Kashima Rinkai Tetsudo Ōarai-Kashima Line opened on 14 March 1985.
Mito station opened on the Mito Line on 16 January 1889. The Suigun Line opened on 16 November 1897. The station was absorbed into the JR East network upon the privatization of the Japanese National Railways (JNR) on 1 April 1987. A new station building was completed in July 1994.
The Kashima Rinkai Tetsudo Ōarai-Kashima Line opened on 14 March 1985.
Mito Station (Ibaraki)