Greenview is a census-designated place (CDP) in Siskiyou County, California, United States.

[2] According to the United States Census Bureau, the CDP has a total area of 1.4 square miles (3.6 km2), 93.88% of it land and 6.12% of it water.

This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F.

21 households (23.9%) were made up of individuals, and 9 (10.2%) had someone living alone who was 65 years of age or older.

There were 100 housing units at an average density of 72.5 per square mile (28.0/km2), of which 65 (73.9%) were owner-occupied, and 23 (26.1%) were occupied by renters.

The racial makeup of the CDP was 89.00% White, 4.00% Native American, 0.50% Asian, and 6.50% from two or more races.

26.1% of all households were made up of individuals, and 11.4% had someone living alone who was 65 years of age or older.

[8] Federally, Greenview is in California's 1st congressional district, represented by Republican Doug LaMalfa.