| 1 | Richland city (north-northeast 2) | 14.6% |
| 2 | Kennewick city (west-northwest) | 14.4% |
| 3 | Kennewick city (east-southeast 1) | 12.4% |
| 4 | Finley CDP (east-northeast 2) | 11.8% |
| 5 | Kennewick city (west) | 11.6% |
| 6 | Benton City city (northwest) | 11.2% |
| 7 | West Richland city (southwest 2) | 11.1% |
| 8 | Prosser city (south-southeast) | 10.7% |
| 9 | West Richland city (northwest) | 10.1% |
| 10 | Finley CDP (east-southeast 1) | 9.9% |
| 11 | Kennewick city (northwest) | 8.6% |
| 12 | Benton City city (south-southwest) | 8.4% |
| 13 | Kennewick city (east-southeast 3) | 8.4% |
| 14 | West Richland city (east-southeast) | 8.1% |
| 15 | Finley CDP (east-northeast 1) | 8% |
| 16 | Benton City city (east-southeast) | 7.7% |
| 17 | West Richland city (west) | 7.5% |
| 18 | Richland city (west) | 7.1% |
| 19 | Richland city (north-northwest) | 6.4% |
| 20 | Benton City city (south-southeast) | 5.9% |
| 21 | Prosser city (north-northwest) | 5.5% |
| 22 | Finley CDP (northwest) | 5.4% |
| 23 | Richland city (southeast 1) | 5.4% |
| 24 | Richland city (southeast 2) | 5.3% |
| 25 | Finley CDP (east-northeast 3) | 5.1% |
| 26 | Kennewick city (north-northeast) | 5% |
| 27 | Kennewick city (east-northeast) | 4.9% |
| 28 | Kennewick city (north-northwest) | 4.9% |
| 29 | Richland city (north-northeast 1) | 4.9% |
| 30 | Richland city (northwest) | 4.9% |
| 31 | Finley CDP (south-southeast) | 4.4% |
| 32 | Finley CDP (west-northwest) | 4.2% |
| 33 | Richland city (south-southwest) | 3.5% |
| 34 | Finley CDP (east-southeast 2) | 2.9% |
| 35 | West Richland city (northeast) | 2.5% |
| 36 | West Richland city (south) | 2.5% |
| 37 | Kennewick city (west-southwest) | 2.4% |
| 38 | Finley CDP (west-southwest) | 2% |
| 39 | West Richland city (east-northeast) | 1.9% |
| 40 | Kennewick city (east-southeast 2) | 1.5% |
| 41 | Finley CDP (east) | 1.3% |
| 42 | Richland city (south) | 1.3% |
| 43 | Kennewick city (south-southeast) | 1.1% |
| 44 | West Richland city (southwest 1) | 0% |