Residential delivery area · Michigan
ZIP Code 48858: Mount Pleasant, MI
ZIP code 48858 uses the postal name Mount Pleasant, Michigan and lies mostly in Isabella County (99% of its land) with the rest in Midland County (Census 2020 ZIP-county file). About 42,000 people live there (Census Bureau, ACS 2020-2024), the more populous of Mount Pleasant's 2 residential ZIP codes. Median household income is $51,267 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Mount Pleasant (4%), Beal City (1%) and Winn (under 1%); 94% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Mount Pleasant · 2 residential ZIPs
- County
- Isabella County (99%); Midland County (1%)
- Census places
- Mount Pleasant (4%); Beal City (1%) census-designated place; Winn (under 1%) census-designated place
- Micro area
- Mount Pleasant, MI
- House district
- MI-2 119th Congress
- State
- Michigan
- Time zone
- Eastern
- Land area
- 174.4 sq mi · 242 people per sq mi
- PO Box ZIPs
- 48804 also use the name Mount Pleasant
Where is ZIP code 48858?
48858 centers on 43.616°, -84.795° and covers 174.4 square miles of land plus 1.1 of water. It borders 8 ZIP codes: 48859, 48878, 48883, 48896, 48893, 49310, 48618, 49340.
The map draws ZIP code areas only. For the streets inside 48858, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 48858 compare with the rest of Mount Pleasant?
| Measure | 48858 | In Mount Pleasant | In Isabella County | In MI |
|---|---|---|---|---|
| People (ACS 2020-2024) | 42,226 | 1st of 2 | 1st of 16 | 28th of 992 |
| Median household income | $51k | 1st of 1 | 14th of 14 | 700th of 774 |
| Median home value | $171k | 1st of 1 | 4th of 14 | 516th of 779 |
Its median household income is higher than in 16% of U.S. residential ZIP codes, and it is denser than 65% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 48858?
The 2020 Census counted 41,844 people in 48858; the ACS, which samples households over 2020-2024, estimates 42,226. Between the 2010 and 2020 censuses its population fell 16.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 42,226
- 2020 Census count
- 41,844−16.4% since 2010 (50,025)
- Households
- 17,458
- Median age
- 27.6
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 48858?
Of the 42,226 people the ACS estimates in 48858, 16.1% are under 18 and 12.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (80.9%).
- Under 1816.1%
- 18 to 6471.7%
- 65 and older12.2%
- White, not Hispanic80.9%
- Other or two or more8.6%
- Hispanic or Latino5.6%
- Black, not Hispanic3.1%
- Asian, not Hispanic1.8%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 48858 earn?
Median household income is $51,267 (ACS 2020-2024), the 14th highest of the 14 ranked ZIP codes in Isabella County. It is not measurably different from 2015-2019 ($48,875 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $51,267
- Income per person
- $31,131
- Below the poverty line
- 25.9%
- Unemployed (of the labor force)
- 6.7%
- Adults 25+ with a bachelor's degree
- 36.7%
- Adjusted gross income per tax return, 2022
- $62,12618,210 returns; wages 63% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 48858?
FHFA's house price index for 48858, built from repeat sales and appraisals of the same homes, rose 75% from 2015 to 2025 and rose 46% from 2020 to 2025, and moved +5.8% in 2025.
- Median home value (owners' estimate)
- $170,800
- Median gross rent
- $913
- Homes owned by their occupants
- 49.8%
- Housing units
- 19,323
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 48858?
1,127 business establishments had a location in this ZIP code in 2023, 40 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance188
- Retail trade179
- Accommodation and food services152
- Other services (except public administration)101
- Construction80
- Real estate and rental and leasing69
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 48858?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 48859 | Mount Pleasant | 2,228 | – | 2.3 mi |
| 48878 | Rosebush | 1,240 | $58k | 6.3 mi |
| 48883 | Shepherd | 7,292 | $65k | 7.9 mi |
| 48896 | Winn | 226 | $136k | 8.4 mi |
| 48893 | Weidman | 5,921 | $73k | 10.9 mi |
| 49310 | Blanchard | 3,183 | $64k | 14.5 mi |
| 48618 | Coleman | 5,197 | $62k | 14.6 mi |
| 49340 | Remus | 2,437 | $54k | 15.8 mi |
| 48832 | Elwell | 1,307 | $73k | 14.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.