San Gil is a town municipality in the Department of Santander in northeastern Colombia, located roughly 300 km (192 mi) from Bogotá and 95 km from the department's capital, Bucaramanga. As of 2005, San Gil had a population of roughly 42,000 people within the total municipal area, making it the third largest urban area in the department, after Bucaramanga and Barrancabermeja. Founded in 1689, San Gil is over 300 years old.