| Zip Code | City | Population ↓ |
|---|---|---|
| 97206 | Portland | 51,062 |
| 97080 | Gresham | 47,168 |
| 97219 | Portland | 44,074 |
| 97202 | Portland | 43,687 |
| 97230 | Portland | 41,799 |
| 97236 | Portland | 39,033 |
| 97030 | Gresham | 38,947 |
| 97233 | Portland | 37,625 |
| 97266 | Portland | 35,719 |
| 97217 | Portland | 34,884 |
| 97211 | Portland | 34,376 |
| 97203 | Portland | 33,327 |
| 97213 | Portland | 31,810 |
| 97214 | Portland | 28,656 |
| 97220 | Portland | 28,041 |
| 97212 | Portland | 27,902 |
| 97060 | Troutdale | 22,145 |
| 97209 | Portland | 20,445 |
| 97239 | Portland | 18,337 |
| 97215 | Portland | 17,780 |
| 97201 | Portland | 17,508 |
| 97216 | Portland | 17,449 |
| 97218 | Portland | 15,094 |
| 97232 | Portland | 14,941 |
| 97221 | Portland | 13,154 |
| 97210 | Portland | 12,007 |
| 97024 | Fairview | 11,488 |
| 97205 | Portland | 8,861 |
| 97227 | Portland | 6,199 |
| 97231 | Portland | 3,835 |
| 97019 | Corbett | 2,864 |
| 97204 | Portland | 1,008 |
| 97208 | Portland | 0 |
| 97258 | Portland | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 34 ZCTAs in Multnomah County, Oregon (US Census).