23 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 48439 | Grand Blanc | 51,900 |
| 48423 | Davison | 33,757 |
| 48507 | Flint | 28,723 |
| 48433 | Flushing | 26,384 |
| 48506 | Flint | 24,712 |
| 48504 | Flint | 24,218 |
| 48503 | Flint | 22,347 |
| 48473 | Swartz Creek | 22,339 |
| 48420 | Clio | 21,195 |
| 48458 | Mount Morris | 19,519 |
| 48532 | Flint | 18,496 |
| 48505 | Flint | 18,032 |
| 48451 | Linden | 16,097 |
| 48529 | Burton | 9,339 |
| 48457 | Montrose | 8,770 |
| 48509 | Burton | 8,645 |
| 48519 | Burton | 8,096 |
| 48438 | Goodrich | 7,591 |
| 48463 | Otisville | 4,393 |
| 48436 | Gaines | 4,131 |
| 48502 | Flint | 1,420 |
| 48437 | Genesee | 279 |
| 48411 | Atlas | 56 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 23 ZCTAs in Genesee County, Michigan (US Census).