John Day is a city located approximately 2 miles (3.2 km) north of Canyon City in Grant County, Oregon, United States, at the intersection of U.S. Routes 26 and 395. The city was named for the nearby John Day River, which, along with Dayville, had been named for a Virginia member of the 1811 Astor Expedition, John Day. The city was incorporated in 1901.

Canyon City is a city in Grant County, Oregon, United States. It is the county seat of Grant County, and is about 2 miles (3 km) south of John Day on U.S. Highway 395. As of the 2010 census, the city had a total population of 703.