Spokane Valley is a city in Spokane County, Washington, United States, and the largest suburb of Spokane. It is located east of Spokane, west of Coeur d'Alene, Idaho and surrounds the city of Millwood on three sides. The city incorporated as the City of Spokane Valley on March 31, 2003. The Washington State Office of Financial Management estimates the city's population as 101,060 as of 2019. Spokane Valley is named after the valley of the Spokane River, in which it is located. Before becoming an incorporated city, the area was and still is referred to as "The Valley" by residents of the Spokane–Coeur d'Alene area.
The City of Spokane Valley incorporated on March 31, 2003. At its creation, it was the third-largest newly incorporated city in US history (after Centennial, Colorado, which incorporated in 2001; and Miami Gardens, Florida, which incorporated about five weeks before Spokane Valley).
The city formed from combining the urbanized unincorporated areas east of Spokane City, including census-designated places (CDPs) of Dishman, Opportunity, Trentwood, Veradale, part of Greenacres, and East Spokane. The new city boundaries did not include the incorporated areas such as Millwood and Liberty Lake, nor the protected areas such as the Dishman Hills Natural Area.