City
- Adrian
- Baker City
- Elgin
- Enterprise
- Granite - Oregon
- Halfway
- Harper
- Huntington
- Ironside
- Jamieson
- Jordan Valley
- Klamath Falls
- La Grande
- North Powder
- Nyssa
- Ontario
- Outside City Limits
- Summerville
- Sumpter
- Unity
- Vale
- Wallowa
County
Zip Code
- 97603
- 97814
- 97827
- 97828
- 97834
- 97850
- 97856
- 97867
- 97876
- 97877
- 97884
- 97885
- 97887
- 97901
- 97906
- 97907
- 97908
- 97909
- 97910
- 97913
- 97913-3110
- 97914
- 97914-0000
- 97914-1398
- 97914-3905
- 97914-8661
- 97914-9999
- 97918
- 97918-0000
School District
- Adrian School District #61
- Annex School District #29
- Baker School District 5J
- Burnt River School District
- Harper School District #66
- Huntington School District 16J
- Imbler 11
- Jordan Valley School District #3
- La Grande School District 1
- North Powder School District 8J
- Nyssa School District 26
- Ontario School District 8C
- Out of Area
- Pine Eagle 61
- Vale School District 84