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

Zip Code 48858 — Mount Pleasant, MI

ZIP Code 48858 is associated with Mount Pleasant, MI, in Isabella County. The listed population estimate is 42,226; estimated density is 93.5 people per square mile. Among records with population estimates, it ranks #1 of 7 in Isabella County and #28 of 987 in MI.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (43.614830, -84.795760)

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

How 48858 Compares

MetricZIP 48858Isabella County recordsMI records
Population estimate42,22662,316 (sum)10,077,716 (sum)
Population Density93.5 /sq mi----
County population rank#1 of 7----
State population rank#28 of 987----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in MI

ZIP CodeCityDistancePopulation estimate
ZIP 48859Mount Pleasant2.3 mi2,228
ZIP 48878Rosebush6.8 mi1,240
ZIP 48883Shepherd8.1 mi7,292
ZIP 48896Winn8.3 mi226
ZIP 48893Weidman10.3 mi5,921

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 →