Leming is an unincorporated community and census-designated place in Atascosa County, Texas, United States. As of the 2010 census it had a population of 946. This was a new CDP for the 2010 census. The community is part of the San Antonio Metropolitan Statistical Area. Although it is unincorporated, Leming has a post office, with the ZIP code of 78050.Leming is located at 294?6?N 9828?20?W? / ?29.06833N 98.47222W? / 29.06833; -98.47222. According to the United States Census Bureau, the CDP has a total area of 4.8 square miles, all land.