La Vernia is a city in Wilson County, Texas, United States. La Vernia is on the south bank of Cibolo Creek at the junction of U.S. Highway 87 an…La Vernia is a city in Wilson County, Texas, United States. La Vernia is on the south bank of Cibolo Creek at the junction of U.S. Highway 87 and Texas Farm to Market Road 775, approximately 25 miles east of downtown San Antonio. The population was 1,077 at the 2020 census. La Vernia is part of the San Antonio Metropolitan Statistical Area.