ZIP codes in Washington County
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- 55001 AftonWashington County
- 55003 BayportWashington County
- 55016 Cottage GroveWashington County
- 55025 Forest LakeWashington County
- 55038 HugoWashington County
- 55042 Lake ElmoWashington County
- 55043 LakelandWashington County
- 55047 Marine On Saint CroixWashington County
- 55055 NewportWashington County
- 55071 St. Paul ParkWashington County
- 55073 ScandiaWashington County
- 55082 StillwaterWashington County
- 55090 MahtomediWashington County
- 55115 MahtomediWashington County
- 55125 WoodburyWashington County
- 55128 OakdaleWashington County
- 55129 WoodburyWashington County