Carnation is an unincorporated community in Washington County, Oregon, United States. Carnation lies on Oregon Route 47, on the south side of Forest Grove. Originally called South Forest Grove by white settlers, it was later dubbed Carnation after the flagship product of the Pacific Coast Condensed Milk Company, later called the Carnation Milk Products Company, which opened Oregon's largest condensery there in 1902. The company was lured by the confluence of easy rail transportation and plentiful dairy suppliers.

Forest Grove is a city in Washington County, Oregon, United States, 25 miles (40 km) west of Portland. Originally a small farm town, it is now primarily a commuter town in the Portland metro area. Settled in the 1840s, the town was platted in 1850, then incorporated in 1872, making it the first city in Washington County. The population was 21,083 at the 2010 census, an increase of 19.1% over the 2000 figure (17,708).