Elmer City is a town in Okanogan County, Washington, United States.

Elmer City was officially incorporated on April 17, 1947, and is located on the Colville Indian Reservation.

[4] According to the United States Census Bureau, the town has a total area of 0.21 square miles (0.54 km2), all of it land.

28.3% of all households were made up of individuals, and 10.2% had someone living alone who was 65 years of age or older.

33.6% of all households were made up of individuals, and 10.0% had someone living alone who was 65 years of age or older.

About 11.4% of families and 18.6% of the population were below the poverty line, including 26.8% of those under the age of eighteen and 19.6% of those 65 or over.