 chatham is a census-designated place (cdp) in the town of chatham in barnstable county, massachusetts, united states. the population was 1,421 at the 2010 census, out of 6,125 in the entire town of chatham. ==geography== chatham is located at  (41.679321, -69.961868). according to the united states census bureau, the cdp has a total area of .  of it is land and  of it (24.36%) is water. ==demographics== {{see
Census-designated_places_in_Barnstable_County,_Massachusetts Census-designated_places_in_Massachusetts Chatham,_Massachusetts