List of counties in Washington

There are 39 counties in the U.S. state of Washington. Washington came from what was previously the western part of Washington Territory and was admitted to the Union as the 42nd state in 1889. The first counties were created from unorganized territory in 1845. Eight of the counties were created by Oregon governments prior to the organization of Washington Territory, 26 were created during Washington's territorial period, and five more were created after Washington became a state (Benton, Chelan, Grant, Ferry, and Pend Oreille).