| ZIP Codes: | 36 ZIP Codes (23 Standard, 5 PO Box, 8 Unique) [See All] |
| Area Codes: | 248 / 810 / 989 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:12:31 PM |
| Population: | 422,492 [See All] |
| FIPS: | 26049 |
| CBSA: | Flint, MI |
| Land Area: | 746 sq mi |
| Water Area: | 16 sq mi |
| Coordinates: | 43.0040, -83.6995 |
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422,492 residents live across 36 ZIPs covering 746 sq mi, served by 17 distinct USPS-recognized cities.
Population moved from 435,792 to 422,492 from 2014 to 2024 — a -3.1% change. 13 ZIPs gained residents, 12 lost.
The county's wealthiest ZIP 48438 (Goodrich, $106,796 median) and poorest ZIP 48505 (Flint, $33,283) are 15.6 miles apart — a 3.2× income gap across local geography.
Median home values vary 10.6× across this county — from $31,700 in 48505 (Flint) to $337,400 in 48438 (Goodrich).
Density varies 25× across the county — from 109 people/sq mi in 48449 (Lennon) to 2,694 in 48502 (Flint).
Educational attainment ranges from 8.1% bachelor's+ in 48529 (Burton) to 43.8% in 48439 (Grand Blanc) — the breadth of educational profiles across the area.
Within Michigan, this is the #5 most populous of 83 counties and ranks #46 for median household income .
Hosts 4 single-entity Unique ZIPs: 48554Gm Service Parts Operations ; 48553Gm Truck And Bus ; 48555Delphi West ; and 48557Gm Vehicle Development Ctr .
Weighted by population, the typical household earns about $67,746 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.7% of adults age 25+ hold a bachelor's degree or higher (69,492 of 293,782 reporting).
23 Standard delivery, 5 PO Box only, 8 single-entity Unique ZIPs serve this county.
8 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 3.2× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 48439 | Grand Blanc | Standard | 51,900 | $88,490 | 56.2 | 8.0% |
| 48430 | Fenton | Standard | 39,309 | $100,193 | 88.2 | 5.8% |
| 48423 | Davison | Standard | 33,757 | $65,079 | 65.7 | 5.3% |
| 48507 | Flint | Standard | 28,723 | $46,554 | 21.7 | -8.4% |
| 48433 | Flushing | Standard | 26,384 | $81,513 | 56.1 | 0.4% |
| 48506 | Flint | Standard | 24,712 | $47,929 | 19.6 | -15.7% |
| 48504 | Flint | Standard | 24,218 | $38,719 | 14.8 | -17.9% |
| 48503 | Flint | Standard | 22,347 | $44,411 | 8.4 | -12.1% |
| 48473 | Swartz Creek | Standard | 22,339 | $77,921 | 56.1 | 0.4% |
| 48420 | Clio | Standard | 21,195 | $66,063 | 65.6 | -2.7% |
| 48458 | Mount Morris | Standard | 19,519 | $46,797 | 35.9 | -7.8% |
| 48532 | Flint | Standard | 18,496 | $61,998 | 16.0 | -7.8% |
| 48505 | Flint | Standard | 18,032 | $33,283 | 12.7 | -19.6% |
| 48451 | Linden | Standard | 16,097 | $99,943 | 37.0 | 12.1% |
| 48529 | Burton | Standard | 9,339 | $41,333 | 4.8 | -2.1% |
| 48457 | Montrose | Standard | 8,770 | $71,090 | 44.3 | 5.6% |
| 48509 | Burton | Standard | 8,645 | $64,160 | 8.8 | -9.2% |
| 48519 | Burton | Standard | 8,096 | $64,351 | 7.8 | 3.6% |
| 48438 | Goodrich | Standard | 7,591 | $106,796 | 33.7 | 6.3% |
| 48463 | Otisville | Standard | 4,393 | $72,500 | 34.0 | 4.0% |
| 48436 | Gaines | Standard | 4,131 | $94,487 | 32.2 | 10.8% |
| 48449 | Lennon | Standard | 2,744 | $69,545 | 25.3 | 2.6% |
| 48502 | Flint | Standard | 1,420 | $50,000 | 0.5 | 30.5% |
| 48437 | Genesee | PO Box | 279 | $40,864 | 0.6 | -46.2% |
| 48411 | Atlas | PO Box | 56 | — | 0.3 | -13.8% |
| 48554 | Flint | Unique | — | — | 0.0 | — |
| 48553 | Flint | Unique | — | — | 0.0 | — |
| 48480 | Grand Blanc | PO Box | — | — | 0.0 | — |
| 48555 | Flint | Unique | — | — | 0.0 | — |
| 48557 | Flint | Unique | — | — | 0.0 | — |
| 48552 | Flint | Unique | — | — | 0.0 | — |
| 48551 | Flint | Unique | — | — | 0.0 | — |
| 48556 | Flint | Unique | — | — | 0.0 | — |
| 48550 | Flint | Unique | — | — | 0.0 | — |
| 48501 | Flint | PO Box | — | — | 0.0 | — |
| 48531 | Flint | PO Box | — | — | 0.0 | — |