Linn, TX

Located in Rio Grande City, Texas, ZIP code 78563 is home to several important landmarks, including the historic Fort Ringgold, established in 1848 and now a public park and museum. The area also boasts the Starr County Courthouse, a grand architectural structure dating back to the early 20th century, and the Roma Bluffs World Birding Center, a popular spot for birdwatching enthusiasts.