| 1 | Kennewick city (west-southwest) | 9,769 |
| 2 | Kennewick city (east-southeast 2) | 7,937 |
| 3 | Finley CDP (south-southeast) | 7,405 |
| 4 | Finley CDP (east-southeast 1) | 7,093 |
| 5 | Benton City city (east-southeast) | 6,754 |
| 6 | Richland city (south-southwest) | 6,641 |
| 7 | Kennewick city (north-northwest) | 6,335 |
| 8 | West Richland city (south) | 6,142 |
| 9 | Kennewick city (northwest) | 6,135 |
| 10 | West Richland city (northeast) | 6,082 |
| 11 | Finley CDP (northwest) | 6,034 |
| 12 | Richland city (northwest) | 6,010 |
| 13 | Kennewick city (north-northeast) | 5,909 |
| 14 | Kennewick city (east-northeast) | 5,859 |
| 15 | Finley CDP (east) | 5,495 |
| 16 | Prosser city (south-southeast) | 5,164 |
| 17 | Finley CDP (west-northwest) | 5,147 |
| 18 | Finley CDP (east-northeast 2) | 5,010 |
| 19 | Kennewick city (west) | 5,006 |
| 20 | Richland city (north-northeast 1) | 4,966 |
| 21 | Kennewick city (west-northwest) | 4,893 |
| 22 | Kennewick city (south-southeast) | 4,785 |
| 23 | Richland city (southeast 1) | 4,740 |
| 24 | Kennewick city (east-southeast 1) | 4,717 |
| 25 | West Richland city (east-northeast) | 4,624 |
| 26 | West Richland city (southwest 2) | 4,616 |
| 27 | Kennewick city (east-southeast 3) | 4,069 |
| 28 | West Richland city (southwest 1) | 3,852 |
| 29 | Finley CDP (east-northeast 3) | 3,827 |
| 30 | Richland city (north-northwest) | 3,802 |
| 31 | Richland city (southeast 2) | 3,775 |
| 32 | Benton City city (south-southwest) | 3,668 |
| 33 | West Richland city (northwest) | 3,628 |
| 34 | Richland city (west) | 3,577 |
| 35 | Richland city (south) | 3,356 |
| 36 | Finley CDP (east-northeast 1) | 3,221 |
| 37 | Richland city (north-northeast 2) | 3,191 |
| 38 | Finley CDP (east-southeast 2) | 3,060 |
| 39 | Benton City city (northwest) | 3,038 |
| 40 | Prosser city (north-northwest) | 2,888 |
| 41 | West Richland city (east-southeast) | 2,864 |
| 42 | West Richland city (west) | 2,152 |
| 43 | Benton City city (south-southeast) | 1,973 |
| 44 | Finley CDP (west-southwest) | 1,015 |