Washington County, located in Oregon, has a population of 606,623 with a population density of 834.8 people per square mile. The county experienced a population growth of 14.6% from 2010 to 2020, with a majority of the population being White (66.9%), followed by Hispanic (13.7%), Asian (7.5%), and Multiracial individuals (3.7%). The median age in Washington County is 35.3, with a fairly even distribution between males (260,524) and females (269,186). The county has a high number of households at 200,934, with an average household size of 2.6. Additionally, Washington County has a high homeownership rate of 57.9%, with 42.1% of households being renters.

In comparison to other counties in Oregon, Washington County stands out as one of the most populous and diverse counties in the state. It has the highest population density at 834.8 people per square mile, and it is one of the counties with the highest percentage of White residents at 66.9%. The county also has a significant Asian population at 7.5%, which is higher than the state average. Additionally, Washington County has a high number of households and a relatively high homeownership rate compared to other counties in Oregon. The county's economy is also thriving, with a large number of farms and a significant amount of crop acreage, contributing to the county's overall economic prosperity.

• Glenwood
• Banks
• Manning
• Cornelius
• Aloha
• Beaverton