South Texas is typically classified as the area between the San Antonio metro area and south to the Rio Grande and Gulf of Mexico. The value of land for sale in Texas's Willacy County recently on Land.com was almost $32 million. This represents around 5,000 acres of farms and ranches for sale in Willacy County. Willacy County ranks 201st out of 254 counties in the state for the combined amount of land currently advertised for sale. Of all land and rural real estate for sale in Willacy County, Raymondville had the most land for sale. Willacy County is Texas's 209th largest county (784 square miles). It's located in the Lower Rio Grande Valley Texas region of the state.