The county of Lyon is located in Iowa and was founded in January 15, 1851. There are 11,581 residents in Lyon who have access to courthouses in Rock Rapids. In general, each county has a full set of courts, from traffic court to superior and appellate court; supreme courts are usually located in the state capital. Iowa is part of the 8th federal circuit court as well.
There are 2,549 residents in Rock Rapids, which is 4.0 square miles and 1,388ft above sea level.