ZIP Code 48657 — Sanford, MI
48657 is a standard (street delivery) ZIP code serving Sanford, Michigan, in Midland 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 48657 at a glance
| ZIP code | 48657 |
|---|---|
| Primary city | Sanford |
| State | Michigan (MI) |
| County | Midland FIPS 26111 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 7,578 |
| Coordinates | 43.709450, -84.421300 |
How ZIP+4 works in 48657
The four digits after the hyphen encode a delivery segment inside 48657. 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 48657 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 48657.
| ZIP | City | Distance |
|---|---|---|
| 48628 | Hope, MI | 6.8 mi |
| 48618 | Coleman, MI | 7.1 mi |
| 48620 | Edenville, MI | 7.2 mi |
| 48640 | Midland, MI | 9.6 mi |
| 48642 | Midland, MI | 9.6 mi |
| 48612 | Beaverton, MI | 11.8 mi |
| 48652 | Rhodes, MI | 14.3 mi |
| 48883 | Shepherd, MI | 16.8 mi |
| 48611 | Auburn, MI | 17.2 mi |
| 48617 | Clare, MI | 17.5 mi |
| 48878 | Rosebush, MI | 17.7 mi |
| 48634 | Linwood, MI | 18.6 mi |
Questions about 48657
What is the ZIP+4 code for 48657?
48657 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 48657, you need to look up a specific street address to get them.
What city is 48657?
48657 is assigned to Sanford, Michigan, in Midland 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.