What US cities have the highest ratio of Caucasians to other groups?

The US cities with the highest ratio of Caucasians to other groups are:

1. Fargo, North Dakota: 94.1% Caucasian

2. Bismarck, North Dakota: 93.9% Caucasian

3. Sioux Falls, South Dakota: 92.3% Caucasian

4. Grand Forks, North Dakota: 91.8% Caucasian

5. Lincoln, Nebraska: 91.4% Caucasian

6. Boise, Idaho: 90.8% Caucasian

7. Spokane, Washington: 90.6% Caucasian

8. Madison, Wisconsin: 89.7% Caucasian

9. Des Moines, Iowa: 89.4% Caucasian

10. Omaha, Nebraska: 89.1% Caucasian