 waterloo is a town in laurens county, south carolina, united states. the population was 203 at the 2000 census. it is part of the greenville&ndash;mauldin&ndash;easley metropolitan statistical area. ==history== waterloo was incorporated as a town in 1885. rosemont plantation was added to the national register of historic places in 1993. ==geography== waterloo is located at  (34.352968, -82.058068).{{cite web|url=http://www.census.gov/geo/www/gazet
Greenville,_South_Carolina_metropolitan_area Towns_in_Laurens_County,_South_Carolina Towns_in_South_Carolina