Midland County Educational Service Agency Share: Educational OrganizationsSchools Midland County Educational Service Agency Visit Website 3917 Jefferson Ave. Midland, MI 48640 (989) 631-5890 (989) 835-3769 (fax) About Map About Provide leadership and support services to schools in Midland County. What's Nearby? Distance: 5 10 15 20 25 50 mi.