Dewey is a city in Washington County, Oklahoma, United States.

In 1899, Jacob Bartles moved his grist mill and trading post three miles north from Bartlesville to property he owned along the Atchison, Topeka and Santa Fe Railroad.

[5] According to the United States Census Bureau, the city has a total area of 2.5 square miles (6.5 km2), all land.

30.0% of all households were made up of individuals, and 15.5% had someone living alone who was 65 years of age or older.

[7][8]Intercity bus service to the city is provided by Jefferson Lines.