Seco Mines is an unincorporated community and census-designated place in Maverick County, Texas, United States. Its population was 560 as of the 2010 census. U.S. Route 277 passes through the community.

Geography

According to the U.S. Census Bureau, the community has an area of 0.579 square miles (1.50 km); 0.561 square miles (1.45 km) of its area is land, and 0.018 square miles (0.047 km) is water.