Fairfield is a town in Spokane County, Washington, United States. The population was 612 at the 2010 census.
In 1888, E.H. Morrison named Fairfield after his wife's hometown. Fairfield was officially incorporated on March 3, 1905.
Fairfield has many events. The most popular event is called Flag Day. Flag day is a day to remember those who have fought to keep the flag flying. In the morning there is a Fun Run at 7 a.m. followed by the official Flag Day parade down Main St. at approximately 10:30 a.m. Then throughout the day there are fun games, booths, and a beer garden that's open all day.