23 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 48439 | Grand Blanc | 52,071 |
| 48423 | Davison | 33,508 |
| 48507 | Flint | 28,648 |
| 48433 | Flushing | 25,756 |
| 48506 | Flint | 24,538 |
| 48504 | Flint | 23,873 |
| 48503 | Flint | 22,809 |
| 48473 | Swartz Creek | 22,793 |
| 48420 | Clio | 21,213 |
| 48532 | Flint | 19,750 |
| 48458 | Mount Morris | 19,411 |
| 48505 | Flint | 18,108 |
| 48451 | Linden | 15,993 |
| 48509 | Burton | 9,532 |
| 48529 | Burton | 8,959 |
| 48457 | Montrose | 8,694 |
| 48519 | Burton | 7,523 |
| 48438 | Goodrich | 7,305 |
| 48463 | Otisville | 4,536 |
| 48436 | Gaines | 4,251 |
| 48502 | Flint | 1,388 |
| 48437 | Genesee | 399 |
| 48411 | Atlas | 29 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 23 ZCTAs in Genesee County, Michigan (US Census).