Grant County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 7,233, making it Oregon's fourth-least populous county. The county seat is Canyon City. It
Seneca is a city in Grant County, Oregon, United States. It is located in the Blue Mountains about 23 miles south of Canyon City, on U.S. Route 395, on the edge of the Malheur National Forest. As of t