Geography Junction City is located in south-central Grays Harbor County at (46.972789, -123.772785). It is bordered to the west by the city of Aberdeen and to the south by the city of Cosmopolis. The CDP is on low ground in the valley of the Chehalis River, between the Chehalis to the west and Elliott Slough to the northeast. U.S. Route 12 runs along the northern edge of the CDP, leading west into Aberdeen and east to Elma. Olympia is to the east of Junction City via U.S. 12 and State Route 8.
Geography Junction City is located in south-central Grays Harbor County at (46.972789, -123.772785). It is bordered to the west by the city of Aberdeen and to the south by the city of Cosmopolis. The CDP is on low ground in the valley of the Chehalis River, between the Chehalis to the west and Elliott Slough to the northeast. U.S. Route 12 runs along the northern edge of the CDP, leading west into Aberdeen and east to Elma Olympia is to the east of .Junction City via U.S. 12 and State Route 8.