County ZIP codes · Michigan · FIPS 26121
Muskegon County, MI ZIP Codes
Muskegon County, Michigan has 20 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 19 residential and 1 for PO boxes or a single organization. 14 of the residential ones lie mainly in Muskegon County and 5 mainly in a neighboring county; 12 cross the county line. Median household income ranges from $48,563 in 49442 (Muskegon) to $92,672 in 49456 (Spring Lake) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Muskegon County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $67,427 and $84,877.
They carry 14 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 19 residential ZIP codes in Muskegon County
14 ZIP codes lie mainly in Muskegon County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 49442 | Muskegon | 44,766 | 1,091 | $49k | $136k | 100% |
| 49441 | Muskegon | 36,779 | 1,695 | $67k | $214k | 100% |
| 49444 | Muskegon | 26,372 | 1,069 | $53k | $166k | 100% |
| 49445 | Muskegon | 21,289 | 349 | $85k | $232k | 100% |
| 49457 | Twin Lake | 11,086 | 137 | $78k | $222k | 97% |
| 49461 | Whitehall | 9,707 | 225 | $83k | $265k | 100% |
| 49437 | Montague | 6,895 | 105 | $83k | $222k | 61% |
| 49415 | Fruitport | 6,330 | 229 | $82k | $246k | 92% |
| 49451 | Ravenna | 6,298 | 75 | $72k | $211k | 95% |
| 49425 | Holton | 3,520 | 55 | $63k | $179k | 63% |
| 49318 | Casnovia | 1,604 | 80 | $82k | $241k | 73% |
| 49440 | Muskegon | 1,492 | 2,466 | $47k | $176k | 100% |
| 49303 | Bailey | 772 | 52 | $79k | $242k | 94% |
| 49443 | Muskegon | 72 | 1,412 | – | – | 100% |
Partly in Muskegon County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 49448 | Nunica | 4,374 | 132 | $87k | $301k | 20% |
| 49456 | Spring Lake | 19,931 | 787 | $93k | $340k | 13% |
| 49403 | Conklin | 2,467 | 53 | $85k | $280k | 7% |
| 49404 | Coopersville | 9,117 | 146 | $86k | $295k | 7% |
| 49330 | Kent City | 5,599 | 128 | $76k | $266k | 1% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
12 ZIP codes of Muskegon County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Muskegon | Elsewhere |
|---|---|---|
| 49456 | 13% | Ottawa County 87% |
| 49457 | 97% | Newaygo County 3% |
| 49404 | 7% | Ottawa County 93% |
| 49437 | 61% | Oceana County 39% |
| 49415 | 92% | Ottawa County 8% |
| 49451 | 95% | Ottawa County 4% |
| 49330 | 1% | Kent County 87%; Newaygo County 8%; Ottawa County 4% |
| 49448 | 20% | Ottawa County 80% |
| 49425 | 63% | Oceana County 28%; Newaygo County 10% |
| 49403 | 7% | Ottawa County 89%; Kent County 4% |
| 49318 | 73% | Ottawa County 23%; Kent County 4% |
| 49303 | 94% | Newaygo County 6% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 49463 | Sylvan Beach |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Muskegon County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Muskegon County's ZIP codes use 2 prefixes: 493 and 494.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 493 | Grand Rapids, MI (SCF 493) | 3 | 49 |
| 494 | Grand Rapids, MI (SCF 493) | 17 | 57 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.