ZIP Code 48640 — Midland, MI
48640 is a standard (street delivery) ZIP code serving Midland, 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 48640 at a glance
| ZIP code | 48640 |
|---|---|
| Primary city | Midland |
| State | Michigan (MI) |
| County | Midland FIPS 26111 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 32,492 |
| Coordinates | 43.583940, -84.336480 |
How ZIP+4 works in 48640
The four digits after the hyphen encode a delivery segment inside 48640. 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 48640 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.
Other ZIP codes in Midland
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 48640.
| ZIP | City | Distance |
|---|---|---|
| 48657 | Sanford, MI | 9.6 mi |
| 48642 | Midland, MI | 9.6 mi |
| 48623 | Freeland, MI | 11 mi |
| 48637 | Merrill, MI | 11.7 mi |
| 48626 | Hemlock, MI | 12.5 mi |
| 48611 | Auburn, MI | 12.6 mi |
| 48615 | Breckenridge, MI | 12.8 mi |
| 48662 | Wheeler, MI | 13.1 mi |
| 48628 | Hope, MI | 13.6 mi |
| 48880 | Saint Louis, MI | 14.6 mi |
| 48618 | Coleman, MI | 15.3 mi |
| 48620 | Edenville, MI | 15.6 mi |
Questions about 48640
What is the ZIP+4 code for 48640?
48640 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 48640, you need to look up a specific street address to get them.
What city is 48640?
48640 is assigned to Midland, 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.