Blood, Trauma, and Biohazard Cleanup in Dayville, OR

Dayville is a city in Grant County, Oregon, lying along U.S. Route 26 at the confluence of the John Day River with its South Fork, about 125 miles east of Bend.

The city was named for the John Day River, and its original post office site stood 3 miles west of the city's present location.

In the mid-19th century Dayville lay along a wagon road, renamed The Dalles Military Road in about 1870, that connected The Dalles on the Columbia River with the gold mines near Canyon City.

Dayville was incorporated in 1913.

The 2020 census counted 132 residents in Dayville, down from 149 in 2010, and the city's population peaked at 286 in the 1950 census.

The 2010 census recorded 72 households in the city.

The city covers 0.53 square miles, all of it land, at an elevation of 2,346 feet, and its own ZIP code is 97825.

Picture Gorge, named for Native American pictographs painted on its canyon walls, lies 6 miles northwest of Dayville where Route 26 meets Oregon Route 19.

The Sheep Rock Unit of the John Day Fossil Beds National Monument, including the Thomas Condon Paleontology Center and the James Cant Ranch Historic District and museum, sits 2 miles north of Picture Gorge along Route 19.

Murderers Creek State Wildlife Area, the Aldrich Mountains, and parts of the Malheur National Forest lie slightly southeast of Dayville, while the Black Canyon Wilderness, the Ochoco Mountains, and parts of the Ochoco National Forest lie slightly southwest.