Tigard is a city in Washington County, Oregon, United States. The population was 54,539 at the 2020 census, making it the 12th most populous city in Oregon. Incorporated in 1961, the city is located south of Beaverton and north of Tualatin, and is part of the Portland metropolitan area. Interstate 5 and Oregon Route 217 are the main freeways in the city, with Oregon Route 99W and Oregon Route 210 serving as other major highways. Public transit service is provided by TriMet, via several bus routes and the WES Commuter Rail line.