Leon Valley is a city in Bexar County, Texas, United States. It is an enclave on the northwest side of San Antonio and is part of the San Antonio-New Braunfels Metropolitan Statistical Area. The population was 10,151 at the 2010 census. Leon Valley is an independent municipality surrounded by the city of San Antonio. Leon Valley was developed in the 1940s as a farming community on Bandera Road between Helotes and San Antonio. In 1952 residents filed a petition for incorporation as an independent city since the residents did not wish to be annexed by San Antonio. Leon Valley incorporated in 1954 under the leadership of its founding mayor, Raymond Rimkus. In 1960, it had a population of 536 and by 1970 Its population grew to 1,960. In 1990 it had 9,581 people. Today, the city is a full-service city with public safety departments including the Fire Department, Emergency Management Services, and Police Department. Operational departments include: Administration, Community, and Economic Development, Finance, Leon Valley Public Library, Municipal Court, and Public Works departments. Residents, as well as visitors, find Leon Valley to be the gateway to San Antonio’s leading attractions, Sea World and Six Flags Fiesta Texas, an equidistant nine miles between attractions. Bandera Road and Loop 410 are the primary arteries to these attractions and the employment base in the northwest sector. The City of Leon Valley is three miles from the Medical District and eight miles to the San Antonio International Airport.