Calliham is an unincorporated community in northeastern McMullen County, Texas, United States, along State Highway 72 between Three Rivers and Tilden.Rand McNally. The Road Atlas '06. Chicago: Rand McNally, 2006, p. 101. Its elevation is 226 feet (69 m), and it is located at (28.4805479, -98.3502895).Geographic Names Information System Feature Detail Report, Geographic Names Information System, 1979-11-30. Accessed 2007-12-23. it has a post office with the ZIP code 78007.USPS – Cities by ZIP Code
Climate The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Calliham has a humid subtropical climate, abbreviated "Cfa" on climate maps.Climate Summary for Calliham, Texas
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