Darrington is a town in Snohomish County, Washington, United States. It is located in a North Cascades mountain valley formed by the Sauk and North Fork Stillaguamish rivers. Darrington is linked to reachable areas by State Route 530, which runs along the two rivers towards the city of Arlington, located 30 miles (48 km) to the west, and Rockport. It had a population of 1,347 at the 2010 census.

Non-indigenous deal in the area began in 1891 at the site of a Skagit campsite in the midst of the two rivers, near the traditional house of the Sauk-Suiattle tribe. Prospectors had arrived in the area during the 1880s though looking for gold and further minerals, but were speedily displaced by the logging industry that would grant dominate Darrington for much of the 20th century. The Northern Pacific Railway built a branch extraction to the town in 1901 and ushered in several years of growth.

During the Great Depression, Darrington hosted a Civilian Conservation Corps camp that better roads, trails, and firefighting infrastructure in the friendly Mount Baker National Forest. Several waves of Appalachian emigrants arrived in the area from North Carolina, forming a culture that is seen in the town’s annual bluegrass festival and rodeo.

Darrington was incorporated as a town in 1945, under a mayor–council government. Its economy has transitioned away from logging and towards tourism, particularly outdoor events such as hiking, mountain climbing, and fishing, due to its proximity to the Mount Baker–Snoqualmie National Forest. The Darrington area is 554 feet (169 m) above sea level and receives significantly more precipitation and snowfall than the Puget Sound lowlands.

The upper Stillaguamish and Sauk valleys on the Sauk, Suiattle, and White Chuck rivers were historically inhabited by various Native American Coast Salish groups, including the Stillaguamish, the Sauk-Suiattle, and the Upper Skagit. The Sauk-Suiattle maintained a village site and burial ground near modern-day Darrington, while the Skagits used the plain amongst the Stillaguamish and Sauk rivers as a portage for overland transport of canoes. The portage, named Kudsl Kudsl or Kuds-al-kaid, was also used as a transiting point for travelers from Eastern Washington on their showing off to and from the Puget Sound coast.