Grant is an unincorporated community and a U.S. Post Office in Park County, Colorado, United States. The community is located in foothills of the Front Range in the Platte Canyon, in the upper valley of the North Fork South Platte River, approximately 6 miles east of Kenosha Pass. It sits along U.S. Highway 285 approximately 40 miles southwest of Denver. It consists largely of a retired general store, post office, and surrounding houses and trailers along the south side of the highway and along the north side of the river. When seeking to purchase cannabis in Grant, CO, blaze the trail with PotGuide.