Postal reference / United States
48721Black River, Michigan
ZIP code 48721 is a United States postal code for Black River, Michigan. Its county association is Alcona County. The map reference point is at 44.8138, -83.3407.
- State / territory
- Michigan
- Recorded place name
- Black River
- County association
- Alcona
- Estimated coordinate
- 44.8138, -83.3407
View on OpenStreetMap - ZIP prefix
- 487 · 54 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
Area
- Land area
- 27.988 sq mi (2023 Census Gazetteer)
Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.
Need the last four digits?
ZIP+4 depends on the full delivery address. A five-digit code alone cannot determine its extension.
Find ZIP+4Explore Michigan
Browse the other 1,158 ZIP codes recorded for Michigan, sorted by code with place and county.
Michigan directoryNearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 48742 | Lincoln | MI | Alcona | 7.6 |
| 48762 | Spruce | MI | Alcona | 8.0 |
| 49766 | Ossineke | MI | Alpena | 8.8 |
| 48740 | Harrisville | MI | Alcona | 11.0 |
| 49747 | Hubbard Lake | MI | Alpena | 14.1 |
| 48705 | Barton City | MI | Alcona | 14.9 |
| 48745 | Mikado | MI | Alcona | 16.6 |
| 48738 | Greenbush | MI | Alcona | 18.4 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
Verify a mailing address
For mailing, confirm the complete street or PO Box address with USPS. A place record does not confirm delivery eligibility or the ZIP+4 extension.
Open USPS address lookup