 northfield is a town in washington county, maine, united states. the population was 148 at the 2010 census. ==geography== according to the united states census bureau, the town has a total area of , of which,  of it is land and  is water. ==demographics== ===2010 census=== as of the census{{cite web|title=american factfinder|url=http://factfinder2.cens
Towns_in_Maine Towns_in_Washington_County,_Maine