Wilson Heating and Cooling

About Smithville

Smithville is a city in Clay and Platte counties in the U.S. state of Missouri and is part of the Kansas City metropolitan area, along the Little Platte River. The population was 10,406 at the 2020 United States Census. == Geography == Smithville is located in western Clay County on the Little Platte River. The Little Platte is dammed just east of the city to form the Smithville Reservoir. U.S. Route 169 passes the west side of the city.According to the United States Census Bureau, the city has a total area of 15.67 square miles (40.59 km2), of which 15.56 square miles (40.30 km2) is land and 0.11 square miles (0.28 km2) is water.