AARP North Dakota Share: AARP North Dakota Visit Website 107 W Main Ave. Suite 125 Bismarck, ND 58501 (701) 355-3642 (701) 255-2242 (fax) About Map About AARP is a nonprofit, nonpartisan organization that empowers people 50 and older to choose how they live as they age. AARP advocates for health security, financial stability and personal fulfillment. What's Nearby? Distance: 5 10 15 20 25 50 mi.