After the Meiji Restoration, the area of present-day Chūō Ward was divided on April 1, 1889 into the town of Chiba and villages of Soga, Miyako, Chishiro, and Oihama within Chiba District. Soga was raised to town status on May 23, 1890, and Chiba Town became Chiba City on January 1, 1921. On November 10, 1928, Oihama was raised to town status. The city of Chiba annexed Soga and Miyako on February 11, 1937, followed by Chishiro on February 11, 1944 and Oihama on February 11, 1955.