Damon is a census-designated place (CDP) in Brazoria County, Texas, United States. The population was 552 at the 2010 census. The town is located about 20 miles (32 km) south of Rosenberg on Texas State Highway 36. Damon sits partly atop a salt dome which was exploited for petroleum, sulphur, and limestone.
Damon is located in northwestern Brazoria County at 29°17′22″N 95°44′13″W (29.289519, -95.737038). According to the United States Census Bureau, the CDP has a total area of 1.394 square miles (3.61 km2), all land.
Damon is 2 miles (3.2 km) from the San Bernard River and 8 miles (13 km) from the Brazos River. The community is between Needville in Fort Bend County and West Columbia in Brazoria County.
Damon is home to the highest point in Brazoria County, Damon Mound, rising 144 feet (43.9 m) above sea level.
The west part of the town sits atop Damon Mound, the surface expression of a salt diapir or dome. The plug of salt rises through geological formations of Tertiary geologic age. The top of the salt mass is about 500 feet (152 m) below the surface and above it are limestone, gypsum, and anhydrite.