| Zip Code | City | Population ↓ |
|---|---|---|
| 97045 | Oregon City | 57,575 |
| 97222 | Portland | 37,058 |
| 97086 | Happy Valley | 32,537 |
| 97267 | Portland | 31,130 |
| 97068 | West Linn | 30,336 |
| 97035 | Lake Oswego | 26,179 |
| 97070 | Wilsonville | 26,001 |
| 97013 | Canby | 24,815 |
| 97015 | Clackamas | 23,996 |
| 97034 | Lake Oswego | 20,930 |
| 97055 | Sandy | 19,621 |
| 97038 | Molalla | 16,423 |
| 97089 | Damascus | 14,503 |
| 97027 | Gladstone | 12,442 |
| 97023 | Estacada | 11,279 |
| 97009 | Boring | 8,538 |
| 97004 | Beavercreek | 4,352 |
| 97017 | Colton | 3,563 |
| 97022 | Eagle Creek | 3,213 |
| 97042 | Mulino | 3,009 |
| 97049 | Rhododendron | 1,956 |
| 97067 | Welches | 1,805 |
| 97011 | Brightwood | 903 |
| 97028 | Government Camp | 190 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 24 ZCTAs in Clackamas County, Oregon (US Census).