Grand Rapids, Michigan is 53% larger than Ann Arbor, Michigan.
Area: 77 km2 calculated
Ann Arbor is a city in the US state of Michigan and the county seat of Washtenaw County. The 2010 census recorded its population to be 113,934, making it the sixth largest city in Michigan. Wikipedia
Area: 117 km2 calculated
Grand Rapids is a city in the U.S. state of Michigan. It is located on the Grand River about 25 miles east of Lake Michigan. As of the 2010 census, the city population was 188,040. Wikipedia