It was part of the holdings of Owari Domain during the Edo period, and prospered as a post town on the route connecting Nagoya with the Nakasendō highway.

During the Meiji period establishment of the modern municipalities system, the area was organized into villages under Higashikasugai District, Aichi.

Komaki was raised to city status on January 1, 1955, after merging with the village of Kitasato in Nishikasugai District, Aichi.

Komaki has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 25 members.

Komaki has a mixed economy, with agriculture (rice and horticulture), commence, and light manufacturing industries playing important roles.