Johnson County is in Northeast Wyoming. Of the 23 counties in the Equality State, 4,174-square-mile Johnson County ranks 11th by size. There is about 2,000 acres of residential land and property for sale in Johnson County, Wyoming, based on recent Land Network data. The combined market value of land for sale here is nearly $21 million. The average price of residential land for sale in Johnson County was $757,257. Browse all residential land and rural property for sale in Wyoming to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.