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 |
| Arlington | 3101 | Brekhus-Beach | 1415 |
| Arlington | 3101 | Johnston | 1420 |
| Battleground | 601 | South 503 | 07-010 |
| Colville | 3302 | City of Colville | 1378 N.S. |
| Ellensburg | 1902 | Sanders Road | 4479 |
| George | 1304 | | 2007-04 |
| Kennewick | 302 | Southeast | 5183 |
| Kettle Falls | 3303 | 984 Lakeview Dr | 1663 |
| Kettle Falls | 3303 | Boise Lumberyard | 1657 |
| Kittitas | 1903 | | 07-007 |
| Kittitas | 1903 | Morefield/Flood | 06-037 |
| Lake Stevens | 3109 | Soper Hill | 742 |
| Moses Lake | 1309 | McConkie-Jorgensen II | 2321 |
| Oak Harbor | 1503 | Address Change | 1495 |
| Olympia | 3403 | Living Water | (6438)6467 |
| Oroville | 2408 | Bud Clark Ballfields | 736 |
| Poulsbo | 1803 | Felkey | 2007-12 |
| Renton | 1725 | Leitch | 5283 |
| Renton | 1725 | Aster Park | 5293 |
| Renton | 1725 | Hudson | 5277 |
|
| Richland | 304 | | 09-07A |
| Selah | 3907 | Driscoll Lane | 1703 |
| Selah | 3907 | Apodaca-Garner | 1697 |
| Vancouver | 605 | Frontier-Pioneer | M-3813 |
| Vancouver | 605 | Hill | M-3823 |
| Vancouver | 605 | United Methodist | M-3822 |
| Vancouver | 605 | Alpine | M-3821 |
| Vancouver | 605 | Wilson II | M-3820 |
| Vancouver | 605 | Stephanopoulos | M-3812 |
| Vancouver | 605 | Shell | M-3810 |
| West Richland | 305 | RR right-of –way | 12-07 |