| Zip Code | City | Population ↓ |
|---|---|---|
| 66508 | Marysville | 4,034 |
| 66411 | Blue Rapids | 1,385 |
| 66427 | Frankfort | 1,239 |
| 66548 | Waterville | 893 |
| 66403 | Axtell | 868 |
| 66412 | Bremen | 467 |
| 66406 | Beattie | 432 |
| 66544 | Vermillion | 304 |
| 66541 | Summerfield | 257 |
| 66518 | Oketo | 207 |
| 66438 | Home | 85 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 11 ZCTAs in Marshall County, Kansas (US Census).