 thumb|thomas viaduct elkridge is an unincorporated community and census-designated place (cdp) in howard county, maryland, united states. the population was 15,593 at the 2010 census. founded early in the 18th century, elkridge is located at
1733_establishments_in_Maryland Census-designated_places_in_Howard_County,_Maryland Elkridge,_Maryland Populated_places_established_in_1733