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Zip Code 48889 — Sumner, MI

48889 is a ZIP Code associated with Sumner, MI, located within Gratiot. The postal region supports an estimated population of 1,528 residents across Data Pending housing units, with a population density of 19.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (43.291330, -84.797010)

Data MetricLocal Statistic
Postal / Zip Code48889
Primary CitySumner
State / ProvinceMI
CountyGratiot
Total Population1,528
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density19.0 people/sq mi
TimezoneAmerica/Detroit

How 48889 Compares

MetricZIP 48889Gratiot CountyMI State Average
Population1,52843,62310,077,716
Median IncomeData PendingN/AN/A
Population Density19.0 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 48818Crystal5.1 mi2,554N/A
Zip 48856Middleton7.0 mi966N/A
Zip 48877Riverdale7.9 mi1,962N/A
Zip 48811Carson City8.1 mi7,440N/A
Zip 48832Elwell8.4 mi1,307N/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 →