ZIP code · Sumner · Michigan · United States
ZIP code 48889 — Sumner
ZIP code 48889 serves Sumner, Michigan.
- Postal code
- 48889Single source Value from one source, not cross-checked.
- City
- Sumner
- County
- Gratiot FIPS 26057
- State
- Michigan
- Country
- United States
- Coordinates
- 43.3091, -84.7907 — precision precise (locality)
View on OpenStreetMap - Population
- 1,496 (ZCTA, ACS 5-year)
- Population density
- 48 / sq mi
- Land area
- 31 sq mi (80.4 km²) (ZCTA, ACS 5-year)
- Median household income
- $62,813
- Per-capita income
- $40,420
- Median age
- 48.1
- Households
- 632
- Housing units
- 717
- Median home value
- $137,500
- Median gross rent
- $990 / month
- Congressional district
- MI-2 (119th Congress)
- USDA hardiness zone
- 6a (-10 to -5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Detroit (UTC−5 / UTC−4 DST)
- Area code
- 989 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 48889 with another ZIP · ZIPs within 25 miles · distance from 48889
Map of ZIP code 48889
Climate — monthly normals
Warmest month Jul (avg high 82°F), coldest Jan (avg low 15°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 29 | 32 | 43 | 56 | 69 | 78 | 82 | 80 | 73 | 60 | 46 | 35 |
| Avg low °F | 15 | 15 | 23 | 35 | 46 | 56 | 59 | 58 | 50 | 39 | 30 | 22 |
| Precip in | 2.2 | 1.8 | 2.1 | 3.5 | 3.7 | 3.6 | 3.3 | 3.7 | 2.7 | 3.2 | 2.7 | 2.0 |
NOAA 1991–2020 climate normals from the nearest station: ALMA (8.9 mi) · NOAA NCEI
Places in ZIP 48889
- 1 schools
- 2 parks
- 4 playgrounds
- 1 post offices
- 1 places of worship
- 1 gas stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page