Out of State Movers Are Half of Washington County’s Population GrowthSeptember 7, 2017 In-migration is one of the hottest topics in the Portland region. According to the U.S. Census Bureau, 98,170 new residents moved to the five-county Portland metro area from other states or abroad between 2010 and 2016. Washington County added 27,000 new residents. That migration accounts for 51 percent of Washington County’s population growth over the past six years, the lowest ratio of new residents to natural increase in the Portland metro.
Migrants to Washington County are younger than average, with a median age of 29.6 years old versus the average of 36.5 years old. New residents are also more highly educated. Over half of new residents in 2015 had a bachelor’s degree or higher, compared with 41 percent of the total population. New residents that moved from elsewhere in the U.S. have a lower median income than average ($27,010 versus $31,761), but residents that moved from abroad have a higher median income ($35,219).