Sturgis is a city in St. Joseph County in the U.S. state of Michigan. The population was 10,994 at the 2010 census. The city is located at the northeast corner of Sturgis Township and at the intersection of US 12 and M-66. Sturgis is just north of the Michigan–Indiana border and the I-80/90 Indiana Toll Road. Sturgis has been assigned a ZIP code of 49091.