Bothell (/ˈbɒθəl/) is a city located in King and Snohomish Counties in the State of Washington. It is part of the Seattle metropolitan area. Based on per capita income, Bothell ranks 78th of 614 areas in the state of Washington to be ranked.

Prior to European settlement, the Sammamish River Valley from Lake Washington to Issaquah Creek south and upstream of Lake Sammamish was inhabited by a population of as many as 200 Native Americans known as the Sammamish. The Sammamish were relocated after the Puget Sound War in 1856 to reservations and non-reservation lands.

In 1870, Columbus S. Greenleaf and George R. Wilson filed land claims in the area formerly inhabited by the Sammamish near present-day Bothell, and built homes. Eight families followed over the next six years. In 1876, Canadian George Brackett bought land and began commercial logging out of a camp located on the north bank of the Sammamish River in what is now the heart of downtown Bothell. A store, school, and sawmill followed over the next several years.

In 1885, Brackett sold 80 acres (32 ha) to David Bothell, a settler from Pennsylvania. The town's first postmaster, who bought his property from Bothell, named the town in his honor in 1888. Later that same year, a local railroad was built through the town to transport coal from Issaquah. Bothell was officially incorporated on April 14, 1909.

Bothell continued to grow as logging expanded and boat traffic brought increasing amounts of goods and passengers up and down the river. As more people moved into the area, the Army Corps of Engineers decided to dredge and straighten the river in the years shortly after Bothell's incorporation. Most boat traffic came to an abrupt end only a few years later when Lake Washington was lowered in 1917. Water transport also shifted to trucks after a brick road was built from Seattle. The logging economy declined quickly around the same time, and the local economy shifted to farming.

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