1839History
=== 19th century ===
Major Robert Moore was an early settler who arrived in 1839—before the Champoeg Meetings—having been the senior member of the first attempt to create an Ame...
1843History
1,000 acres (400 ha) on the west side of Willamette Falls, across the Willamette River from Oregon City, from Native American Chief Wanaxha of the Wallamut Tribe, on which he pl...
1845Government
The Oregon Territorial Legislature voted to rename it Linn City on December 22, 1845, as a memorial to Senator Lewis F.
1860History
The 1860 census listed 225 residents.
1862Disaster
A major fire and the Great Flood of 1862 put a halt to the pioneer settlement in 1861, dispersing many of the surviving family members throughout the Pacific Northwest.
1873Architecture
The Willamette Falls Locks and canal were completed in 1873, making the waterfall passable by river traffic.
1889Government
The Sullivan hydroelectric plant opened in 1889, and harvested energy from nearby Willamette Falls.
1908Government
Willamette was incorporated in 1908, the City of West Linn was incorporated in 1913, and the two towns merged in 1916.
1913Government
=== 20th century ===
West Linn was incorporated in 1913 and merged with the adjacent town of Willamette in 1916, which had incorporated five years earlier.
1920History
By 1920, the number had grown to 1,628.
1922Architecture
The Oregon City Bridge was built in 1922.
1950History
=== Climate ===
Extremes range from −2 °F (−19 °C), recorded in 1950, to 107 °F (42 °C), recorded in 1956 and 1981.
2007History
== Demographics ==
The median income for a household in the city was $72,010, and the median income for a family was $83,252 (These figures had risen to $94,844 and $108,821 re...
2011History
The locks closed in 2011 with no plans to reopen.
2020History
|+ Racial composition as of the 2020 census
=== 2010 census ===
As of the 2010 census, there were 25,109 people, 9,523 households, and 7,081 families residing in the city.