County ZIP codes · Michigan · FIPS 26005
Allegan County, MI ZIP Codes
Allegan County, Michigan has 27 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 24 residential and 3 for PO boxes or a single organization. 15 of the residential ones lie mainly in Allegan County and 9 mainly in a neighboring county; 15 cross the county line. Median household income ranges from $50,102 in 49450 (Pullman) to $113,346 in 49315 (Byron Center) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Allegan 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 $68,920 and $98,319.
They carry 24 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 24 residential ZIP codes in Allegan County
15 ZIP codes lie mainly in Allegan County; 9 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 49423 | Holland | 47,060 | 604 | $82k | $278k | 84% |
| 49010 | Allegan | 18,175 | 116 | $74k | $217k | 99% |
| 49080 | Plainwell | 16,002 | 207 | $75k | $258k | 53% |
| 49348 | Wayland | 13,699 | 208 | $83k | $275k | 91% |
| 49323 | Dorr | 11,073 | 221 | $99k | $288k | 99% |
| 49408 | Fennville | 10,288 | 95 | $74k | $230k | 100% |
| 49078 | Otsego | 10,018 | 202 | $78k | $198k | 85% |
| 49419 | Hamilton | 8,681 | 119 | $98k | $335k | 100% |
| 49328 | Hopkins | 4,069 | 74 | $94k | $233k | 100% |
| 49344 | Shelbyville | 3,778 | 122 | $85k | $313k | 85% |
| 49450 | Pullman | 2,998 | 102 | $50k | $119k | 100% |
| 49453 | Saugatuck | 2,908 | 280 | $110k | $491k | 100% |
| 49070 | Martin | 2,359 | 90 | $69k | $207k | 100% |
| 49406 | Douglas | 1,085 | 723 | $103k | $497k | 100% |
| 49335 | Moline | 174 | 406 | $117k | – | 100% |
Partly in Allegan County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 49090 | South Haven | 13,250 | 169 | $69k | $295k | 41% |
| 49056 | Grand Junction | 4,478 | 77 | $63k | $159k | 37% |
| 49316 | Caledonia | 26,427 | 463 | $103k | $364k | 18% |
| 49434 | Macatawa | 130 | 1,494 | $179k | – | 11% |
| 49026 | Bloomingdale | 1,754 | 60 | $68k | $161k | 11% |
| 49315 | Byron Center | 27,091 | 491 | $113k | $382k | 10% |
| 49055 | Gobles | 5,941 | 103 | $62k | $164k | 7% |
| 49464 | Zeeland | 28,914 | 395 | $98k | $344k | 5% |
| 49333 | Middleville | 12,753 | 161 | $89k | $325k | 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?
16 ZIP codes of Allegan County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Allegan | Elsewhere |
|---|---|---|
| 49423 | 84% | Ottawa County 16% |
| 49464 | 5% | Ottawa County 95% |
| 49315 | 10% | Kent County 72%; Ottawa County 18% |
| 49316 | 18% | Kent County 79%; Barry County 3% |
| 49010 | 99% | |
| 49080 | 53% | Barry County 31%; Kalamazoo County 16% |
| 49348 | 91% | Barry County 7%; Kent County 2% |
| 49090 | 41% | Van Buren County 59% |
| 49333 | 1% | Barry County 96%; Kent County 2% |
| 49323 | 99% | Ottawa County 1% |
| 49078 | 85% | Kalamazoo County 12%; Van Buren County 3% |
| 49055 | 7% | Van Buren County 93% |
| 49056 | 37% | Van Buren County 63% |
| 49344 | 85% | Barry County 15% |
| 49026 | 11% | Van Buren County 89% |
| 49434 | 11% | Ottawa County 89% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 49311 | Bradley |
| 49314 | Burnips |
| 49416 | Glenn |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Allegan County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Allegan County's ZIP codes use 3 prefixes: 490, 493 and 494.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 490 | Grand Rapids, MI (SCF 493) | 8 | 92 |
| 493 | Grand Rapids, MI (SCF 493) | 10 | 49 |
| 494 | Grand Rapids, MI (SCF 493) | 9 | 57 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.