WSU Extension > Stevens County > Contact Us Contact Us Location 986 South Main Ste D (mailing)986 South Main Ste D (street)Colville, WA 99114Phone – 509-684-2588Email – extensionstevens@wsu.edu Contact Information Name* First Last Email* How Can We Help?NameThis field is for validation purposes and should be left unchanged. Δ To sign up for e-news: Sign up for Stevens E-Newsletter Thank you for your interest!