Harlingen, TX

ZIP code 78552 is located in Olmito, Texas. This area is known for its close proximity to Palo Alto Battlefield National Historical Park, where visitors can explore the site of the first major battle of the Mexican-American War. Additionally, the region is home to the Resaca de la Palma State Park, offering hiking trails and opportunities for birdwatching along the Resaca de la Palma Resaca.