1853Architecture
In 1853, Galbreath built the first bridge over the Tualatin river, and the town became known as Bridgeport.
1869Government
According to Oregon Geographic Names, a post office with the spelling "Tualitin" was established November 5, 1869, and the spelling changed to "Tualatin" in 1915.
1913Government
It was incorporated as the City of Tualatin in 1913.
1962History
In 1962, a fossilized mastodon (Mammut americanum) was excavated in what later became a Fred Meyer parking lot.
1972Culture
In 1972 fossils were uncovered near Fanno Creek that were determined to be a partial skeleton of a Harlan's ground sloth (Paramylodon harlani).
1992Education
The school began holding its classes there after the school opened in 1992.
2000History
=== 2000 census ===
As of the 2000 census, there were 22,791 people, 8,651 households, and 5,804 families living in the city.
2004History
Since 2004, Tualatin has been home to the West Coast Giant Pumpkin Regatta, one of the largest and oldest pumpkin regattas in the country.
2005Architecture
== Economy ==
Tualatin is home to a majority of Bridgeport Village ("Bridgeport"), an upscale shopping area that opened in early 2005.
2010History
=== 2010 census ===
As of the 2010 census, there were 26,054 people, 10,000 households, and 6,762 families living in the city.
2014Architecture
Tualatin also harbors Nyberg Rivers, which opened in the fall of 2014 and is the third major retail project to be developed by CenterCal Properties in Tualatin.
2020History
As of the 2020 census, there were 10,835 households in Tualatin, of which 33.5% had children under the age of 18 living in them.