NULL Of 254 counties in the state, Starr County ranks 41st by size (1,229 square miles). Starr County is in Rio Grande Plains Texas. There is roughly 1,000 acres of riverfront land for sale in Texas's Starr County based on recent Land Network data. The combined market value of land for sale here is roughly $300,000. Browse all waterfront property for sale in Starr County on the Land Network to find the marina, lakefront and other recreational property that meets your needs, from waterside land perfect as a retirement investment to existing residential waterfront land and property for hunting, fishing and other outdoor-recreation pursuits! The most common type of land for sale by combined acreage in Starr County is undeveloped land.