Beaverton, Oregon is a place.
Beaverton is a city in Washington County , in the U.S. state of Oregon . The city center is 7 mi west of downtown Portland in the Tualatin River Valley . As of the 2010 census , the population is 89,803 . This makes it the second-largest city in the county and Oregon 's sixth-largest city . In 2010 , Beaverton was named by Money magazine as one of the 100 `` best places to live '' , among smaller cities in the country .