Douglas County University of Missouri Extension Share: Community Action Organizations Douglas County University of Missouri Extension Visit Website 203 SE 2nd Ave. Court House Ava, MO 65608 (417) 683-4409 (417) 683-6105 (fax) About About We are the University of Missouri's classroom in Douglas County. We connect people to research-based education to enrich the quality of life and enhance the economic well-being of our community. Call The Office (417) 683-4594 Office Location 810 Collins Avenue Ava, MO 65608 Email Us director@avachamber.org