Vanderpool is a small unincorporated community in Bandera County in the Texas Hill Country, United States, which is part of the Edwards Plateau. It is considered part of the San Antonio Metropolitan Statistical Area. Although it is unincorporated, Vanderpool has a post office, with the ZIP code of 78885. According to the Handbook of Texas, Vanderpool ha…Vanderpool is a small unincorporated community in Bandera County in the Texas Hill Country, United States, which is part of the Edwards Plateau. It is considered part of the San Antonio Metropolitan Statistical Area. Although it is unincorporated, Vanderpool has a post office, with the ZIP code of 78885. According to the Handbook of Texas, Vanderpool had a population of 22 in 1990. Hunting, ranching and tourism are prime contributors to the regional economy.