First three digits · Michigan
ZIP Codes Starting with
20 ZIP codes start with 485, sorted at the Metroplex, MI (SCF 480) sectional center (USPS labeling list L005, effective October 1, 2026) in Michigan: 10 residential ZIP codes across 1 county and 10 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 485 mean?
The first digit, 4, is one of ten national areas (Indiana, Kentucky, Michigan and Ohio). The first three, 485, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 485 to the Metroplex, MI (SCF 480) facility. The last two digits pick the delivery area. By residents, the largest town names among the 485 ZIP codes are Flint and Burton.
The same facility sorts 6 prefixes, 341 ZIP codes in all: 480, 483, 484, 485, 486, 487.
Where are the 485 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 485
| County | ||||||
|---|---|---|---|---|---|---|
| 48501 | Flint | Genesee County | PO Box or unique | – | – | – |
| 48502 | Flint | Genesee County | 1,420 | 3,100 | $50k | – |
| 48503 | Flint | Genesee County | 22,347 | 2,643 | $44k | $84k |
| 48504 | Flint | Genesee County | 24,218 | 1,645 | $39k | $54k |
| 48505 | Flint | Genesee County | 18,032 | 1,446 | $33k | $32k |
| 48506 | Flint | Genesee County | 24,712 | 1,336 | $48k | $92k |
| 48507 | Flint | Genesee County | 28,723 | 1,302 | $47k | $111k |
| 48509 | Burton | Genesee County | 8,645 | 983 | $64k | $136k |
| 48519 | Burton | Genesee County | 8,096 | 1,032 | $64k | $159k |
| 48529 | Burton | Genesee County | 9,339 | 1,944 | $41k | $87k |
| 48531 | Flint | Genesee County | PO Box or unique | – | – | – |
| 48532 | Flint | Genesee County | 18,496 | 1,159 | $62k | $169k |
| 48550 | Flint | Genesee County | PO Box or unique | – | – | – |
| 48551 | Flint | Genesee County | PO Box or unique | – | – | – |
| 48552 | Flint | Genesee County | PO Box or unique | – | – | – |
| 48553 | Flint | Genesee County | PO Box or unique | – | – | – |
| 48554 | Flint | Genesee County | PO Box or unique | – | – | – |
| 48555 | Flint | Genesee County | PO Box or unique | – | – | – |
| 48556 | Flint | Genesee County | PO Box or unique | – | – | – |
| 48557 | Flint | Genesee County | PO Box or unique | – | – | – |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.