- Aberdeen (Population: 16,461)
- Ahtanum (Population: 4,181)
- Airway Heights (Population: 4,500)
- Alderwood Manor (Population: 15,329)
- Algona (Population: 2,460)
- Allyn-Grapeview (Population: 2,004)
- Amboy (Population: 2,085)
- Ames Lake (Population: 1,435)
- Anacortes (Population: 14,557)
- Arlington Heights (Population: 2,510)
- Arlington (Population: 11,713)
- Artondale (Population: 8,630)
- Asotin (Population: 1,095)
- Auburn (Population: 40,314)
- Ault Field (Population: 2,064)
