Smithville, TX is a city located in Bastrop County, Texas and has a land area of 177.05 square miles (458.56 km2). The water area for the city is 2.06 square miles or 5.34 km2. There is one unique zip code in Smithville, Texas and it is 78957. The area code(s) for Smithville is 512/737/830/979.
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