County ZIP codes · Michigan · FIPS 26037
Clinton County, MI ZIP Codes
Clinton County, Michigan has 18 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 17 residential and 1 for PO boxes or a single organization. 10 of the residential ones lie mainly in Clinton County and 7 mainly in a neighboring county; 12 cross the county line. Median household income ranges from $52,018 in 48823 (East Lansing) to $112,526 in 48820 (Dewitt) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Clinton 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 $65,281 and $94,216.
They carry 17 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 17 residential ZIP codes in Clinton County
10 ZIP codes lie mainly in Clinton County; 7 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 48906 | Lansing | 25,901 | 796 | $64k | $140k | 78% |
| 48879 | Saint Johns | 18,413 | 96 | $79k | $229k | 96% |
| 48820 | Dewitt | 18,357 | 279 | $113k | $337k | 100% |
| 48808 | Bath | 6,527 | 260 | $78k | $258k | 100% |
| 48866 | Ovid | 4,607 | 93 | $65k | $169k | 55% |
| 48831 | Elsie | 3,088 | 42 | $63k | $161k | 45% |
| 48835 | Fowler | 2,635 | 49 | $82k | $214k | 100% |
| 48822 | Eagle | 2,379 | 72 | $91k | $301k | 100% |
| 48894 | Westphalia | 2,193 | 64 | $102k | $276k | 86% |
| 48853 | Maple Rapids | 721 | 1,139 | $52k | $129k | 100% |
Partly in Clinton County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 48873 | Pewamo | 1,250 | 40 | $86k | $195k | 50% |
| 48823 | East Lansing | 50,034 | 2,116 | $52k | $283k | 43% |
| 48848 | Laingsburg | 8,344 | 122 | $95k | $261k | 40% |
| 48845 | Hubbardston | 1,218 | 52 | $86k | $173k | 30% |
| 48837 | Grand Ledge | 19,947 | 254 | $97k | $253k | 24% |
| 48840 | Haslett | 12,386 | 659 | $73k | $281k | 19% |
| 48875 | Portland | 11,400 | 134 | $94k | $228k | 10% |
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 Clinton County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Clinton | Elsewhere |
|---|---|---|
| 48823 | 43% | Ingham County 57% |
| 48906 | 78% | Ingham County 17%; Eaton County 5% |
| 48837 | 24% | Eaton County 72%; Ionia County 4% |
| 48879 | 96% | Gratiot County 4% |
| 48840 | 19% | Ingham County 61%; Shiawassee County 20% |
| 48875 | 10% | Ionia County 90% |
| 48848 | 40% | Shiawassee County 60% |
| 48866 | 55% | Shiawassee County 45% |
| 48831 | 45% | Shiawassee County 33%; Saginaw County 21%; Gratiot County 2% |
| 48894 | 86% | Ionia County 14% |
| 48873 | 50% | Ionia County 50% |
| 48845 | 30% | Ionia County 43%; Montcalm County 18%; Gratiot County 9% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 48833 | Eureka |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Clinton County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Clinton County's ZIP codes use 2 prefixes: 488 and 489.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.