Baytown, TX

ZIP code 77521 encompasses the city of Baytown, Texas, situated in Harris County. Known for its industrial presence, Baytown is home to ExxonMobil’s Baytown Refinery, one of the largest oil refineries in the United States. Other notable landmarks include the San Jacinto Mall, Pirates Bay Waterpark, and the Baytown Nature Center, providing residents and visitors with opportunities for shopping, recreation, and outdoor activities.