RentCafe released its rent report for September 2019 - while many Portland metro area cities have seen slight decreases month over month, rents in the Willamette Valley and along the southern part of the I-5 corridor are beginning to increase. In Springfield, just outside of Eugene, rents were up 1% month over month, while in Keizer and Salem they were up 0.7% and 0.4% respectively. While Tualatin's rents decreased by 2.9% in September, year over year the Washington County city had the highest rent increase at 7.3%. Nationwide, rents decreased by 0.1% month over month in September. Lake Oswego still boasts the highest rents in the state, but rents there decreased 3.4% last month. Read more.