Isabella County, MI ZIP codes
There are 8 ZIP codes in Isabella County, MI, in 6 towns, from 48804 to 49310. The largest are 48858 (Mount Pleasant), 48883 (Shepherd) and 48893 (Weidman). 3 more cross into it from a neighbouring county: 48617, 48622 and 48632.
The county seat is Mount Pleasant.
- ZIP codes
- 8
- Partly in it
- 3 more
- Towns
- 6
- County seat
- Mount Pleasant
- County FIPS
26073- State
- Michigan
- Population
- 64,565
- Median household income
- $55,237
- Land area
- 573 sq mi
- Area code
- 989
- Metro area
- Mount Pleasant
Isabella County ZIP codes by town
- Mount Pleasant (county seat)
- 48804, 48858, 48859
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
ZIP codes partly in Isabella County
These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Isabella County.
- 48617 Clare · mostly in Clare County
- 48622 Farwell · mostly in Clare County
- 48632 Lake · mostly in Clare County
Map of Isabella County ZIP codes
The ZIP codes of Isabella County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Isabella County in numbers
About 64,565 people live in Isabella County, in 24,914 households, the 31st most populous of Michigan's 83 counties. The median household income is $55,237 a year, 24% below the Michigan median of $72,875 (US: $80,734). The median owner-occupied home is valued at $170,400 (26% below the Michigan median), and median gross rent is $913 a month. The median age is 30.1; 31.3% of adults 25 and over hold a bachelor's degree or higher (32.4% across Michigan); the average commute takes 20 minutes.
| Population | 64,565 |
|---|---|
| Households | 24,914 |
| Median age | 30.1 |
| Median household income | $55,237 |
| Median home value | $170,400 |
| Median gross rent | $913 |
| Bachelor's degree or higher | 31.3% |
| Mean commute | 19.6 min |
| Population density | 113 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Isabella County
| Town | ZIP codes | Population |
|---|---|---|
| Mount Pleasant | 3 | 21,236 |
| Blanchard | 1 | 3,183 |
| Shepherd | 1 | 1,457 |
| Weidman | 1 | 1,156 |
| Rosebush | 1 | 331 |
| Winn | 1 | 226 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Isabella County.
- Midland County (11)
- Montcalm County (17)
- Gratiot County (15)
- Mecosta County (8)
- Clare County (5)
- Gladwin County (4)
- Osceola County (7)
Not sure you are in Isabella County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Isabella County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
48804 | Mount Pleasant , MI | No street area | — | — | — |
48858 | Mount Pleasant , MI | Standard | 42,226 | $51,267 | $170,800 |
48859 | Mount Pleasant , MI | Standard | 2,228 | — | — |
48878 | Rosebush , MI | Standard | 1,240 | $57,656 | $150,300 |
48883 | Shepherd , MI | Standard | 7,292 | $65,223 | $160,300 |
48893 | Weidman , MI | Standard | 5,921 | $73,108 | $180,000 |
48896 | Winn , MI | Standard | 226 | $136,136 | $209,500 |
49310 | Blanchard , MI | Standard | 3,183 | $64,420 | $177,700 |
Cite this page
zipcodes.pro. “Isabella County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mi/county/isabella
Underlying data is public domain or openly licensed — sources, vintages and licences.