23 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 48439 | Grand Blanc | 52,012 |
| 48423 | Davison | 33,601 |
| 48507 | Flint | 29,357 |
| 48433 | Flushing | 25,824 |
| 48506 | Flint | 24,837 |
| 48504 | Flint | 23,941 |
| 48503 | Flint | 22,891 |
| 48473 | Swartz Creek | 22,586 |
| 48420 | Clio | 21,019 |
| 48532 | Flint | 20,531 |
| 48458 | Mount Morris | 19,109 |
| 48505 | Flint | 17,809 |
| 48451 | Linden | 15,416 |
| 48509 | Burton | 9,354 |
| 48457 | Montrose | 8,876 |
| 48519 | Burton | 8,577 |
| 48529 | Burton | 8,164 |
| 48438 | Goodrich | 7,511 |
| 48463 | Otisville | 4,440 |
| 48436 | Gaines | 4,139 |
| 48502 | Flint | 1,323 |
| 48437 | Genesee | 348 |
| 48411 | Atlas | 30 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 23 ZCTAs in Genesee County, Michigan (US Census).