It was followed by Crook, Washington, Polk and Clackamas counties. They grew by the highest percentage, but Multnomah County added the most people between 2014 and 2015.
It added about 12,000 more folks — that’s the population of Cornelius.
Multnomah’s already the most populated with 790,000 people.
After Multnomah, the counties that added the most people were Washington with 11,000 and Clackamas, with 7,000 people.
What’s the nation’s most populous county? Los Angeles with more than 10 million souls.