Washington County Cooperative Library Services
Washington County Cooperative Library Services is the library system serving Washington County, Oregon. WCCLS distributes tax funds to libraries. It was established in 1975.
Libraries
WCCLS is made up of 16 libraries which are operated by 13 cities and non-profit organizations.| Library | Operator |
| Aloha Community Library | Aloha Community Library Association |
| Banks Public Library | City of Banks |
| Beaverton City Library | City of Beaverton |
| Beaverton-Murray Scholls Library | City of Beaverton |
| Cedar Mill Community Library | Cedar Mill Community Library Association |
| Bethany-Cedar Mill Library | Cedar Mill Community Library Association |
| Cornelius Public Library | City of Cornelius |
| Forest Grove City Library | City of Forest Grove |
| Garden Home Community Library | Garden Home Community Library Association |
| Hillsboro Brookwood Library | City of Hillsboro |
| Hillsboro Shute Park Library | City of Hillsboro |
| North Plains Public Library | City of North Plains |
| Sherwood Public Library | City of Sherwood |
| Tigard Public Library | City of Tigard |
| Tualatin Public Library | City of Tualatin |
| West Slope Community Library | Washington County |
Past WCCLS-affiliated libraries included ones in the former Tanasbourne Mall and, in the 1970s, Aloha Park Library, located in Aloha Park school, which was open to the public one night a week.
In 2019, the Oregon College of Art & Craft Library closed along with the rest of the college. Additionally, the Tuality Health Resource Center closed in August. These specialty libraries had been affiliated with WCCLS for many years, and some of their collection was distributed to other libraries in the county.