ZIP Code 48436 — Gaines, MI
48436 is a standard (street delivery) ZIP code serving Gaines, Michigan, in Genesee 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 48436 at a glance
| ZIP code | 48436 |
|---|---|
| Primary city | Gaines |
| State | Michigan (MI) |
| County | Genesee FIPS 26049 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 4,131 |
| Coordinates | 42.870170, -83.877040 |
How ZIP+4 works in 48436
The four digits after the hyphen encode a delivery segment inside 48436. 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 48436 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 48436.
| ZIP | City | Distance |
|---|---|---|
| 48473 | Swartz Creek, MI | 5.4 mi |
| 48451 | Linden, MI | 5.5 mi |
| 48418 | Byron, MI | 6.6 mi |
| 48429 | Durand, MI | 7 mi |
| 48816 | Cohoctah, MI | 8.4 mi |
| 48476 | Vernon, MI | 9.2 mi |
| 48449 | Lennon, MI | 9.3 mi |
| 48430 | Fenton, MI | 10.3 mi |
| 48414 | Bancroft, MI | 10.3 mi |
| 48507 | Flint, MI | 10.4 mi |
| 48532 | Flint, MI | 10.6 mi |
| 48855 | Howell, MI | 12.7 mi |
Questions about 48436
What is the ZIP+4 code for 48436?
48436 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 48436, you need to look up a specific street address to get them.
What city is 48436?
48436 is assigned to Gaines, Michigan, in Genesee 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.