| County |
State |
Percent |
| Divide |
North Dakota |
64,7 |
| Steele |
North Dakota |
62,0 |
| Traill |
North Dakota |
59,0 |
| Norman |
Minnesota |
58,9 |
| Griggs |
North Dakota |
58,9 |
| Nelson |
North Dakota |
54,8 |
| Burke |
North Dakota |
53,1 |
| Pennington |
Minnesota |
50,6 |
| Williams |
North Dakota |
48,2 |
| Lac qui Parle |
Minnesota |
47,9 |
| Eddy |
North Dakota |
47,4 |
| Marshall |
Minnesota |
46,9 |
| Bottineau |
North Dakota |
46,0 |
| Grant |
Minnesota |
43,8 |
| Polk |
Minnesota |
43,3 |
| Clearwater |
Minnesota |
42,6 |
| Renville |
North Dakota |
42,4 |
| Roseau |
Minnesota |
42,3 |
| Clay |
Minnesota |
42,2 |
| Barnes |
North Dakota |
40,8 |
| Walsh |
North Dakota |
40,6 |
| Winnebago |
Iowa |
40,3 |
| Trempealeau |
Wisconsin |
39,9 |
| Pope |
Minnesota |
39,7 |
| Chippewa |
Minnesota |
39,4 |
| Ransom |
North Dakota |
39,3 |
| Fillmore |
Minnesota |
39,0 |
| Pierce |
North Dakota |
39,0 |
| Yellow Medicine |
Minnesota |
38,9 |
| Daniels |
Montana |
37,6 |
| Worth |
Iowa |
37,3 |
| Freeborn |
Minnesota |
37,1 |
| Ramsey |
North Dakota |
37,1 |
| Cass |
North Dakota |
36,9 |
| Mountrail |
North Dakota |
36,8 |
| Sargent |
North Dakota |
36,5 |
| Vernon |
Wisconsin |
36,1 |
| McHenry |
North Dakota |
35,6 |
| Kittson |
Minnesota |
35,4 |
| Sheridan |
Montana |
35,1 |
| Marshall |
South Dakota |
35,1 |
| Grand Forks |
North Dakota |
34,9 |
| McKenzie |
North Dakota |
34,2 |
| Towner |
North Dakota |
34,0 |
| Winneshiek |
Iowa |
33,9 |
| Red Lake |
Minnesota |
33,9 |
| Bowman |
North Dakota |
33,7 |
| Houston |
Minnesota |
33,4 |
| Swift |
Minnesota |
33,4 |
| Foster |
North Dakota |
33,4 |
| Otter Tail |
Minnesota |
32,9 |
| Wilkin |
Minnesota |
32,2 |
| Deuel |
South Dakota |
31,8 |
| Ward |
North Dakota |
30,3 |
| Day |
South Dakota |
30,3 |
| Harding |
South Dakota |
30,2 |
| Jackson |
Wisconsin |
30,1 |
| Adams |
North Dakota |
30,0 |
| Cavalier |
North Dakota |
30,0 |
59 counties, mainly in North Dakota and Minnesota, had more than 30 % Norwegian ancestry in the census of 2000.
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