1860Military
The federal government finished construction of a military road from Fort Steilacoom to Fort Bellingham in 1860, passing through the Highline area to the east of modern-day SeaTac.
1988Sports
The Tyee Valley Golf Course is an 18-hole golf course and also served as the 1988 and 1989 USA Cross Country Championships running course.
1989Civil Rights
Residents voted for incorporation on March 14, 1989, and the city incorporated in February 1990.
1990Government
The city "has contracted with the King County Sheriff's Office for law enforcement since incorporation in 1990." Deputies assigned to SeaTac wear city uniforms and drive patrol ...
2000History
=== 2000 census ===
As of the 2000 census, there were 25,496 people, 9,708 households, and 5,960 families residing in the city.
2004Education
In 2004, Highline Public Schools reorganized some of its high schools, including Tyee, into having smaller programs on larger campuses.
2010History
=== 2010 census ===
As of the 2010 census, there were 26,909 people, 9,533 households, and 5,913 families residing in the city.
2013Infrastructure
In 2013, voters in the city narrowly passed a minimum wage of $15 per hour for employees of airport-related businesses, such as hotels, parking lots and car rental agencies.
2014History
In 2014, Gavin Kelly of The Resolution Foundation wrote that "A generation ago SeaTac was what Americans would call a middle-class town.
2015History
However, the Washington Supreme Court in August 2015 reversed the King County Superior Court ruling, which said that SeaTac did not have authority to set a minimum wage at the a...
2017Education
It then has been transformed back to Tyee High School - a single school in the 2017–18 school year.
2022History
=== Surrounding cities ===
== Demographics ==
As of the 2022 American Community Survey, there are 11,414 estimated households in SeaTac with an average of 2.63 persons per ho...