Utah 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 37.4%.
| # | County | State | Diversity index |
|---|---|---|---|
| 1 | Salt Lake County | UT | 59.3% |
| 2 | San Juan County | UT | 56.2% |
| 3 | Grand County | UT | 50.0% |
| 4 | Weber County | UT | 47.6% |
| 5 | Tooele County | UT | 44.0% |
| 6 | Utah County | UT | 41.6% |
| 7 | Washington County | UT | 41.3% |
| 8 | Wasatch County | UT | 39.6% |
| 9 | Summit County | UT | 38.7% |
| 10 | Duchesne County | UT | 38.3% |
| 11 | Cache County | UT | 37.8% |
| 12 | Uintah County | UT | 37.7% |
| 13 | Davis County | UT | 37.4% |
| 14 | Millard County | UT | 35.7% |
| 15 | Beaver County | UT | 33.8% |
| 16 | Sanpete County | UT | 33.4% |
| 17 | Iron County | UT | 31.1% |
| 18 | Carbon County | UT | 30.6% |
| 19 | Garfield County | UT | 30.3% |
| 20 | Box Elder County | UT | 29.6% |
| 21 | Emery County | UT | 23.1% |
| 22 | Kane County | UT | 22.3% |
| 23 | Sevier County | UT | 22.0% |
| 24 | Juab County | UT | 19.3% |
| 25 | Morgan County | UT | 12.6% |