The cities below have imposed annexations increasing their boundaries. Sales tax rates for businesses included in the annexation may be affected. More information can be obtained from the respective city planning departments.
| City |
Location
Code |
Annexation
Name |
Ordinance
Number |
| Richland | 304 | Colley | 25-06 |
| Battle Ground | 601 | | 05-021 |
| Battle Ground | 601 | | 06-012 |
| Vancouver | 605 | Evergreen School District | M-3750 |
| Vancouver | 605 | Thompson | M-3754 |
| Vancouver | 605 | Gher | M-3758 |
| Vancouver | 605 | White | M-3759 |
| Quincy | 1310 | Jensen | 06-179 |
| Oak Harbor | 1503 | Hinchee | 1466 |
| Oak Harbor | 1503 | Dykstra | 1467 |
| Bellevue | 1704 | | 5608 |
| Ellensburg | 1902 | Elliott | 4449 |
| Ellensburg | 1902 | Wolford | 4448 |
| Arlington | 3101 | Mulligan | 1399 |
| Marysville | 3111 | Smith | 2648 |
| Pasco | 1104 | | 3788 |
| Tumwater | 3406 | Kirsop-54th Avenue | 02006-002 |
| Tumwater | 3406 | Stickley-93rd Avenue | 02005-028 |
| College Place | 3601 | Botimer-Freedle | 961 |
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