According to RentCafe's January 2020 rent report for Oregon, last month saw rents stay mostly flat across the state. Keizer saw this biggest rent increase at 0.5%, followed by Lake Oswego, Happy Valley, and Portland. Lake Oswego still boasts the highest average rent in the state, at $1,689. Aloha saw the biggest month over month decrease at 1.6%, followed by Bend at 1.2%. Rents in Eugene and Springfield were down 0.8%. Nationally, rents are up 3% year over year. Read more.