According to RentCafe, month-over-month rent growth in Oregon cities largely outpaced growth nationwide in July. While Wilsonville saw the highest rent growth in Oregon at 1.7%, nationally average rent went up just 0.2% last month. Lake Oswego, which also boasts the most expensive average rent at $1,704 per month, saw average rent increases of 1.3% in July. Beaverton, Bend, Portland, Springfield, and Tigard also saw rent increases of at least 1%. Read more.