Sumner, MI zip code
Sumner, Michigan uses one zip code: 48889. Most of it is in Gratiot County. Together these zip codes are home to about 1.5K people.
Zip codes
1
Population
1.5K
All zips combined
Largest zip
48889
1,528 residents
Zip codes in Sumner
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 48889 | 1,528 | $60,200 |