Oregon Counties by Population

The most populated counties in Oregon are Multnomah County with 789,698, Washington County at 598,865, Clackamas County with 423,173, Lane County at 381,181, and Marion County with 346,741. You can get the most current Census population data for all 36 Oregon counties, sorted from the most populous counties in Oregon to the least, according to the 2023 Population Estimates Program.

Sure, you can copy this list right into your favorite spreadsheet tool. Or save yourself formatting headaches and grab the latest Oregon counties population data as a ready-to-use Excel™ file below. It's time to stop searching and start digging into data!