Issaquah is a city in King County, Washington, United States. The population was 40,051 at the 2020 census. Located in a valley and bisected by Interstate 90, the city is bordered by the Sammamish Plateau to the north and the "Issaquah Alps" to the south. It is home to the headquarters of the multinational retail company Costco Wholesale Corporation. Issaquah is included in the Seattle metropolitan area.

Bellevue is a city in the Eastside region of King County, Washington, United States, located across Lake Washington from Seattle. It is the third-largest city in the Seattle metropolitan area, and the fifth-largest city in Washington. It has variously been characterized as a satellite city, a suburb, a boomburb, or an edge city. The population was 151,854 at the 2020 census. The city's name is derived from the French term belle vue.