County ZIP codes · Michigan · FIPS 26065
Ingham County, MI ZIP Codes
Ingham County, Michigan has 39 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 23 residential and 16 for PO boxes or a single organization. 18 of the residential ones lie mainly in Ingham County and 5 mainly in a neighboring county; 13 cross the county line. Median household income ranges from $52,018 in 48823 (East Lansing) to $121,103 in 48864 (Okemos) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Ingham 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 $56,631 and $92,188.
They carry 15 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 23 residential ZIP codes in Ingham County
18 ZIP codes lie mainly in Ingham County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 48823 | East Lansing | 50,034 | 2,116 | $52k | $283k | 57% |
| 48911 | Lansing | 39,876 | 2,300 | $57k | $147k | 80% |
| 48910 | Lansing | 32,800 | 2,307 | $55k | $129k | 100% |
| 48864 | Okemos | 23,901 | 1,190 | $121k | $379k | 100% |
| 48842 | Holt | 21,945 | 1,275 | $88k | $226k | 98% |
| 48854 | Mason | 19,529 | 172 | $95k | $249k | 100% |
| 48912 | Lansing | 17,674 | 3,370 | $54k | $150k | 100% |
| 48840 | Haslett | 12,386 | 659 | $73k | $281k | 61% |
| 48825 | East Lansing | 11,295 | 16,441 | – | – | 100% |
| 48895 | Williamston | 11,116 | 134 | $93k | $295k | 100% |
| 48915 | Lansing | 9,428 | 5,229 | $55k | $123k | 100% |
| 49285 | Stockbridge | 6,240 | 82 | $73k | $210k | 80% |
| 49251 | Leslie | 5,958 | 102 | $85k | $206k | 95% |
| 48892 | Webberville | 4,715 | 85 | $89k | $211k | 79% |
| 48933 | Lansing | 3,107 | 2,970 | $34k | $113k | 100% |
| 48819 | Dansville | 2,550 | 58 | $111k | $255k | 100% |
| 48824 | East Lansing | 2,097 | 1,726 | – | – | 100% |
| 49264 | Onondaga | 1,454 | 54 | $92k | $236k | 72% |
Partly in Ingham County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 48906 | Lansing | 25,901 | 796 | $64k | $140k | 17% |
| 48872 | Perry | 6,142 | 111 | $79k | $237k | 16% |
| 48827 | Eaton Rapids | 15,831 | 139 | $78k | $218k | 16% |
| 48917 | Lansing | 32,483 | 1,355 | $71k | $223k | 13% |
| 48821 | Dimondale | 6,327 | 318 | $107k | $244k | 4% |
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?
13 ZIP codes of Ingham County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Ingham | Elsewhere |
|---|---|---|
| 48823 | 57% | Clinton County43% |
| 48911 | 80% | Eaton County20% |
| 48917 | 13% | Eaton County87% |
| 48906 | 17% | Clinton County78%; Eaton County5% |
| 48842 | 98% | Eaton County2% |
| 48827 | 16% | Eaton County82%; Jackson County2% |
| 48840 | 61% | Shiawassee County20%; Clinton County19% |
| 48821 | 4% | Eaton County96% |
| 49285 | 80% | Jackson County10%; Livingston County6%; Washtenaw County3% |
| 48872 | 16% | Shiawassee County80%; Livingston County4% |
| 49251 | 95% | Jackson County5% |
| 48892 | 79% | Livingston County21% |
| 49264 | 72% | Jackson County26%; Eaton County2% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Ingham County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Ingham County's ZIP codes use 3 prefixes: 488, 489 and 492.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 488 | Lansing, MI (SCF 488) | 15 | 88 |
| 489 | Lansing, MI (SCF 488) | 21 | 22 |
| 492 | Detroit, MI (SCF 481) | 3 | 62 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.