Grand Rapids is a city in the U.S. state of Michigan. The city is located on the Grand River about 40 miles east of Lake Michigan. As of the 2010 census, the city population was 188,040. In 2010, the Grand Rapids metropolitan area had a population of 774,160 and a combined statistical area, Grand Rapids-Muskegon-Holland, population of 1,321,557. It is the county seat of Kent County, Michigan, second largest city in Michigan (after Detroit), and the largest city in West Michigan.