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is a census-designated place (CDP) in Berkeley, Charleston, and Dorchester counties in the U.S. state of South Carolina. The population was 13,264 at the 2000 census. It is part of the Charleston–North Charleston–Summerville Metropolitan Statistical Area.
Ladson's post offices serves residents of Berkeley, Charleston, and Dorchester counties.
According to the United States Census Bureau, the CDP has a total area of 8.6 square miles (22.3 km²), all land.