North Dakota counties ranked by the diversity index, the chance that two public school students picked at random from the county belong to different racial or ethnic groups. Counties need at least 3 schools and 1,000 students to qualify. The median ranked county is at 40.1%.
| # | County | State | Diversity index |
|---|---|---|---|
| 1 | Mountrail County | ND | 62.9% |
| 2 | McKenzie County | ND | 61.1% |
| 3 | Williams County | ND | 54.8% |
| 4 | Grand Forks County | ND | 51.5% |
| 5 | Ramsey County | ND | 50.3% |
| 6 | Cass County | ND | 49.3% |
| 7 | Walsh County | ND | 46.8% |
| 8 | Burleigh County | ND | 43.0% |
| 9 | McLean County | ND | 41.0% |
| 10 | Morton County | ND | 39.2% |
| 11 | Stark County | ND | 38.2% |
| 12 | Richland County | ND | 36.2% |
| 13 | Benson County | ND | 33.1% |
| 14 | Stutsman County | ND | 30.2% |
| 15 | Mercer County | ND | 23.8% |
| 16 | Traill County | ND | 21.6% |
| 17 | Barnes County | ND | 20.8% |
| 18 | Rolette County | ND | 11.8% |