North Texas generally refers to the counties in the north-central part of the state, excluding those in the Texas Panhandle. It covers the metro areas of Dallas-Fort Worth and Wichita Falls and their surrounding counties. It is the state's most populous region. The value of all farms and ranches for sale in Collin County, Texas, recently was around $2 billion, representing a total of 8,143 acres of land for sale in Collin County. Collin County ranks ninth in the Lone Star State for the combined amount of land currently advertised for sale. Prosper had the most land for sale. Collin County is the 180th biggest county (886 square miles) in Texas. It's located in the Dallas Prairie Texas region of the state.