Crooked River Ranch is an unincorporated community and census-designated place (CDP) in southern Jefferson County, Oregon, United States. A small portion of the ranch is also in north Deschutes County. The Ranch is located between the Deschutes River and the Crooked River near the south end of Lake Billy Chinook. It is west of U.S. Route 97 between Culver and Terrebonne. Amenities in the community include a golf course, swimming pool, tennis courts, saloon, disc golf course, horse riding arena and general store. The ranch is approximately 12,000 acres, and as of the 2020 census had a population of 4,912. It is the largest homeowner association in Oregon. Crooked River Ranch has a Terrebonne mailing address, but the postal service also allows mail addressed to Crooked River, Oregon or Crooked River Ranch, Oregon. The ZIP code is 97760.