ZIP Code 48770 — Whittemore, MI
48770 is a standard (street delivery) ZIP code serving Whittemore, Michigan, in Iosco County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 48770 at a glance
| ZIP code | 48770 |
|---|---|
| Primary city | Whittemore |
| State | Michigan (MI) |
| County | Iosco FIPS 26069 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 1,843 |
| Coordinates | 44.249780, -83.820370 |
How ZIP+4 works in 48770
The four digits after the hyphen encode a delivery segment inside 48770. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 48770 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 48770.
| ZIP | City | Distance |
|---|---|---|
| 48756 | Prescott, MI | 7.7 mi |
| 48748 | National City, MI | 8.1 mi |
| 48765 | Turner, MI | 8.3 mi |
| 48739 | Hale, MI | 8.7 mi |
| 48766 | Twining, MI | 9.7 mi |
| 48763 | Tawas City, MI | 10.2 mi |
| 48635 | Lupton, MI | 13.3 mi |
| 48743 | Long Lake, MI | 13.4 mi |
| 48749 | Omer, MI | 13.9 mi |
| 48703 | Au Gres, MI | 14.6 mi |
| 48659 | Sterling, MI | 17 mi |
| 48730 | East Tawas, MI | 17.9 mi |
Questions about 48770
What is the ZIP+4 code for 48770?
48770 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 48770, you need to look up a specific street address to get them.
What city is 48770?
48770 is assigned to Whittemore, Michigan, in Iosco County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.