Statistical area The population of the Rapid City metropolitan statistical area (Pennington and Meade Counties) was 139,074 at the 2020 census. Rapid City is also included in the Rapid City-Spearfish combined statistical area, which, with the addition of Lawrence County, had a 2020 census population of 164,842.
Statistical area The population of the Rapid City metropolitan statistical area (Pennington and Meade Counties) was 139,074 at the 2020 census. Rapid City is also included in the Rapid City-Spearfish combined statistical area, which, with the addition of Lawrence County, had a 2020 census population of 164,842