 maryhill is a census-designated place (cdp) in klickitat county, washington, united states. the population was 98 at the 2000 census. ==history==  maryhill is named after the wife and daughter of regional icon sam hill, who purchased land and envisioned a community there shortly after the turn of the 20th century.hitchman, robert. place names of washington. washington state historical society. 1985. earlier the area was known as "columbia" or "columbus". hill used his maryhill property to build the 
Census-designated_places_in_Klickitat_County,_Washington Census-designated_places_in_Washington_(state) Columbia_River_Gorge National_Register_of_Historic_Places_in_Washington_(state) Planned_communities_in_the_United_States Populated_places_on_the_Columbia_River Utopian_communities