Auburn is a city in King County, Washington and additionally Pierce County, Washington, United States; with the majority of spatial land area within King County. The population was 70,180 at the 2010 United States Census. Auburn is a suburb in the Seattle metropolitan area. Auburn is currently ranked the fourteenth largest city in the state of Washington. Auburn is bordered by the cities of Federal Way, Washington, Pacific, Washington, and Algona, Washington to the west, Sumner, Washington to the south, unincorporated King County to the east, and Kent, Washington to the north. The Muckleshoot... Indian Reservation is located within southern city limits. Auburn is located at 47°18′8″N 122°12′53″W / 47.30222°N 122.21472°W / 47.30222; -122.21472 . According to the United States Census Bureau, the city has a total area of 21.3 square miles . 21.3 square miles of it is land and 0.05 percent is water. Two rivers, the White River and, to a greater extent, the Green River flow through Auburn. Historically, the Stuck River ran through the settlement of Stuck, which is now a small pocket of unincorporated King County within southern Auburn.
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| County: | King County, Pierce County |
| State: | Washington |
| Population: | 70,180 |
| Area: | 21.4 sq. mi. |
| Time zone: | Pacific Time Zone |
| Also known as: | Auburn, Washington, Pierce County / Auburn city |