Question: What is the 1099 filing address for North Dakota?   Answer: Sign, date and mail your Form ND 307 (North Dakota Transmittal Of Wage And Tax Statement) along with your 1099 returns to:   Office of State Tax Commissioner PO Box 5624 Bismarck, ND 58506-5624   For more information refer to http://1099-efile.realtaxtools.com/state/North%20Dakota/