 junction city is a census-designated place (cdp) in grays harbor county, washington, united states. the population was 18 at the 2010 census. ==geography== junction city is located at  (46.972789, -123.772785). according to the united states census bureau, the cdp has a total area of 1.7&nbsp;square miles (4.5&nbsp;kmÂ²), all of it land. ==demographics== {{us census population |2000= 80 |2010= 18 |footnote=[http://www.census.gov/prod/www/abs/d
Census-designated_places_in_Grays_Harbor_County,_Washington Census-designated_places_in_Washington_(state)