Cibolo is a city in Guadalupe and Bexar counties, Texas, United States. It is part of the San Antonio–New Braunfels Metropolitan Statistical Area. Cibolo voted to become an independent township on October 9, 1965. As of the 2010 census, Cibolo had a population of 15,349, up from 3,035 at the 2000 census. In 2015, the estimated population was 26,637. In 2016, the estimated population was 27,855.