Beaverton, Oregon is a city.
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 . 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 .