ZIP Code 48889 - Sumner Michigan
Overview
ZIP Code 48889 is located in Sumner Michigan. Portions of 48889 are also in New Haven Township (Gratiot County) and Sumner Township and Crystal Township (Montcalm County). 48889 is entirely within Gratiot County. Regionally, 48889 is located in the Flint-Saginaw-Bay City Area.
ZIP Code 48889 Quick Stats
| ZIP Code Name | Sumner |
| Primary County | Gratiot County |
| ZIP Code Type | Standard |
| Population (2022) | 1,482 |
| Area Code(s) | 989 |
| Current Time | EDT |
ZIP Code 48889 Map
48889 Demographics
48889 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Michigan based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 48889 is White. The current unemployment level in 48889 is 5.1%.
| Population | 1,482 |
| Population Growth Rate | 14.12% |
| Population Density | 44 People per Square Mile |
| Total Households | 545 |
| Percentage High Income Households | 0.4% |
| Median Household Income (2021) | $56,667 |
| Average Adjusted Gross Income (2021) | $147,140 |
| Current Unemployment Rate (May 2026) | 5.1% |
| Sales Tax Rate (2025) | 6% |
| Majority Race/Ethnicity | White - 96.38% |
48889 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 1,333 | 96.38% |
| Black | 12 | 0.87% |
| Hispanic | 38 | 2.75% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
48889 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 88 | 10.15% |
| Bachelor Degree | 66 | 7.61% |
| High School Diploma | 390 | 44.98% |
| No High School Diploma | 20 | 2.31% |
| GED or Alternate | 57 | 6.57% |
| 1 or More Years of College | 148 | 17.07% |
| Associates Degree | 86 | 9.92% |
| Masters Degree | 10 | 1.15% |
| Professional Degree | 2 | 0.23% |
| Doctorate Degree | 0 | 0% |
48889 Geography
| Coordinates | 43.28964996, -84.79575348 |
| Adjacent ZIP Codes | |
| Cities/Towns in 48889 | |
| Region | Flint-Saginaw-Bay City Area |
| Metropolitan/Micropolitan Stat Area | Alma, MI |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/Detroit |
| Area | 34 Square Miles |
48889 Schools
| School Districts in 48889 | |
| Elementary Schools in 48889 | |
| High Schools in 48889 |
48889 Weather and Climate Data
| Plant Hardiness Zone | Zone 5b: -15F to -10F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfb - Humid Continental Mild Summer, Wet All Year | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 56g - Lansing Loamy Plain | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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