Home > MI > Isabella County > Mount Pleasant > Zip 48858

Zip Code 48858 — Mount Pleasant, MI

48858 is a ZIP Code associated with Mount Pleasant, MI, located within Isabella. The postal region supports an estimated population of 42,226 residents across Data Pending housing units, with a population density of 93.5 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (43.614830, -84.795760)

Data MetricLocal Statistic
Postal / Zip Code48858
Primary CityMount Pleasant
State / ProvinceMI
CountyIsabella
Total Population42,226
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density93.5 people/sq mi
TimezoneAmerica/Detroit

How 48858 Compares

MetricZIP 48858Isabella CountyMI State Average
Population42,22662,31610,077,716
Median IncomeData PendingN/AN/A
Population Density93.5 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 48859Mount Pleasant2.3 mi2,228N/A
Zip 48878Rosebush6.8 mi1,240N/A
Zip 48883Shepherd8.1 mi7,292N/A
Zip 48896Winn8.3 mi226N/A
Zip 48893Weidman10.3 mi5,921N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →