U.S. Small Business Administration (SBA) Share: Government Offices U.S. Small Business Administration (SBA) Visit Website 1200 Memorial Highway Bismarck, ND 58504 (701) 250-4303 (701) 250-4304 (fax) About Map About The SBA's mission is to help small businesses start and grow. What's Nearby? Distance: 5 10 15 20 25 50 mi.