Rochester, Minnesota is 67% larger than Richmond, California.
Area: 86 km2 calculated
Richmond is a city in western Contra Costa County, California, United States. The city was incorporated on August 7, 1905. Wikipedia
Area: 144 km2 calculated
Rochester is a city in the U.S. State of Minnesota and is the county seat of Olmsted County. Located on the Zumbro River's south fork, the city has a population of 106,769 according to the 2010 United States Census. The U.S. Census Bureau estimated 2013 population is 110,742. Wikipedia