Duvall is a city in King County, Washington, United States, located on SR 203 halfway between Monroe and Carnation.

[4] The area that became known as Duvall was historically the home of the Snoqualmie and other ancestral Tulalip Native American tribes.

[7] The center of present-day town was located on a hillside homesteaded by Francis and James Duvall, loggers who arrived in 1871.

[7][8] On April 28, 1968, nearly 3,000 fans attended a rock concert at a farm in Duvall where an upright piano was dropped from a helicopter.

[10] Duvall experienced a great amount of construction during the period of 2008–2009 with the aim of making the one-road town center more accessible and presentable to tourists.

[11] The year's largest and most popular event is the 'Duvall Days', which is held the first weekend in June in downtown Duvall, with other activities at nearby locations.

Saturday events include a parade, street side vendors, live entertainment, and many games and activities for children.

Due to its location relative to the Northern Cascades, the surrounding Snoqualmie Valley is subject to flooding from late fall to early spring.

Duvall leans heavily Democratic like King County as a whole, having cast more than two-thirds of its votes for Joe Biden in the 2020 presidential election.