Beaverton is a city in Washington County, Oregon, United States, seven miles west of Portland in the Tualatin River Valley. As of May 2006, its population is estimated to be 84,270,.1% more than the 2000 census figure of 76,129. This makes it the second-largest city in the county and Oregon's sixth-largest city. Beaverton's controversial annexation plans during the next decade are likely to result in major growth in both population and area. Beaverton apartments for rent comparison page shows most up to date rent information on Beaverton apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.