1915Government
Oak Harbor was incorporated on May 14, 1915.
1935Military
The city grew following the completion of Deception Pass Bridge on July 31, 1935, and Naval Air Station Whidbey Island on September 21, 1942.
2000History
=== 2000 census ===
As of the 2000 census, there were 19,795 people, 7,333 households, and 5,265 families living in the city.
2010History
=== 2010 census ===
As of the 2010 census, there were 22,075 people, 8,677 households, and 5,789 families living in the city.
2020Government
== Government ==
Oak Harbor has favored Republican candidates in each presidential election in the 21st century, though by less than a percentage point in 2020.
2024History
Kamala Harris ultimately flipped the city in 2024.