The first European record of a landing on the Washington coast was in 1775 by Spanish captain Don Bruno de Heceta aboard the Santiago, part of a twin-hull flotilla with the Sonora.
The Lewis and Clark expedition arrived on October 10, 1805 in the state.
The first settlement in Washington was New Market (now Tumwater) in 1846.
In 1853, Washington Territory was formed from part of the Oregon Territory.
Washington became the 42nd state in the United States on November 11, 1889.
Early prominent industries in the state included agriculture, timber, shipping, fishing, salmon canning and mining.
By the turn of the 20th century, Aberdeen had been awarded the title of "the roughest city west of the Mississippi" for excessive gambling, violence, drug abuse, and prostitution (the city was taboo to the military in the early 1980s).
The region around eastern Puget Sound became heavy industry during the First and Second World Wars, and the Boeing Company became an established icon in the region.
During the Great Depression, a series of hydropower plants along the Columbia River were built as part of a project to increase power generation. This culminated in 1941 with the completion of
the Grand Coulee Dam, the largest dam in the United States.
During the Second World War, Seattle was the starting point for many Pacific soldiers, some of whom stayed at the Golden Gardens Park.
In East Washington, the Hanford Works nuclear power plant was opened in 1943, which played an important role in the construction of atomic bombs.
In 1980, the northeast face of Mount St. Helens exploded outward, destroying much of the top of the volcano.
In 2004, Washington's population comprised 631,500 foreign-born (10.3% of the state population) and an estimated 100,000 illegal aliens (1.6% of the state population).
The six largest alleged ancestors in Washington are: Germans (18.7%), English (12%), Irish (11.4%), Norwegians (6.2%), Mexicans (5.6%) and Filipino (4th grade) %).
The proportion of non-religious people in Washington is the highest in any state, and church membership is among the lowest of all states.
The state of Washington is one of only seven states that levy no income tax.
The property tax was the first tax levied in the state of Washington, and its collection accounts for about 30 percent of Washington's total state and local revenue.
In 2004, Washington achieved first place in the production of red raspberries (90.0% of total US production), hops (75.0%), apples (58.1%), sweet cherries (47.3%), Pears (42.6%), Concord grapes (39.3%) and Niagara grapes (31.6%).
There are 140 public airfields in Washington, including 16 state airports.
Washington is home to four of the five longest floating bridges in the world: Evergreen Point Floating Bridge, Lacey V. Murrow Memorial Bridge and the Homer M. Hadley Bridge over Lake Washington and the Hood Canal Bridge, which are the Olympic and Kitsap Peninsula connects.
Three United States Navy ships, including two battleships, were named USS Washington in honor of the state.
United Airlines originally belonged to the Boeing Airplane Company.
The city Artic was named after the wife of the city founder "Arta". The application was misread and led to the unusual spelling of the word Artic.
The state of Washington is the only state named after a US president.
In Seattle is the first revolving restaurant of 1961.
The state of Washington produces more apples than any other state in the Union.
The state of Washington has more glaciers than the other 47 contiguous states combined.
The Washington State Capitol Building was the last state capitol building with a rotunda.
Everett is home to the world's largest building, the Boeing Final Assembly Factory
Medina is home to the United States richest man, Microsoft Bill Gates.
The northwestern most point in the adjacent US is Cape Flattery on Washington's Olympic Peninsula.
King County, the largest county in Washington, was originally named after William R. King, vice president under Franklin Pierce; It was founded in 1986 after civil rights activist dr. Renamed Martin Luther King, Jr.
Before becoming a state, the area was called Columbia (named after the Columbia River). When statehood was granted, the name was changed to Washington, supposedly so people would not confuse it with the District of Columbia.
The highest point in Washington is Mount Rainier. It was named after Peter Rainier, a British soldier who fought the Americans during the Revolutionary War.
Governor Albert D. Rosellini Bridge at Evergreen Point is the world's longest floating bridge. The bridge connects Seattle and Medina via Lake Washington.