Pine Junction is situated in the foothills of the Front Range south of Mount Evans, approximately 25 miles (40 km) southwest of Denver along U.S. Highway 285. The community sits astride the Park-Jefferson county line, and is situated at the crest of a hill on the highway, east of where the highway drops from Crow Hill down into the Platte Canyon near Bailey. The community consists of a strip of retail businesses along the highway, as well as nearby houses on either side of highway. It serves partially as a bedroom community for the Denver Metropolitan Area to the northeast.