Mathis is located in San Patricio County, a small community just East of Lake Mathis (since renamed Lake Corpus Christi)

Mathis borders I-37 and the eastern side of Lake Corpus Christi, making for some wonderful recreational opportunities at the lake and nearby Coastal Bend areas. A rural area of large ranches and farmland throughout the early 20th century, Mathis became a desirable destination for weekend homes with the construction of Lake Corpus Christi formed in the 1930s when the Nueces River was dammed.

Lake Corpus Christi is a winter home for hundreds of Winter Texans from all parts of the state and country. Host to the Corpus Christi state park, comprised of 350 acres, one can spend the day in the limestone cliffs fishing from the shores or in a boat for catfish, crappie, white bass, largemouth bass, and Alligator gar. Swimming, boating, and skiing are also a lure for visitors along the lake's 200 miles of shoreline with numerous areas containing campsites, boat ramps, fishing piers, and RV and mobile home area.