ZIP Code 48423 — Davison, MI
48423 is a standard (street delivery) ZIP code serving Davison, 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 48423 at a glance
| ZIP code | 48423 |
|---|---|
| Primary city | Davison |
| State | Michigan (MI) |
| County | Genesee FIPS 26049 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 33,757 |
| Coordinates | 43.039820, -83.514040 |
How ZIP+4 works in 48423
The four digits after the hyphen encode a delivery segment inside 48423. 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 48423 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 48423.
| ZIP | City | Distance |
|---|---|---|
| 48509 | Burton, MI | 4.7 mi |
| 48506 | Flint, MI | 5.8 mi |
| 48519 | Burton, MI | 5.9 mi |
| 48411 | Atlas, MI | 7.2 mi |
| 48437 | Genesee, MI | 7.3 mi |
| 48440 | Hadley, MI | 7.9 mi |
| 48463 | Otisville, MI | 8.6 mi |
| 48529 | Burton, MI | 8.8 mi |
| 48446 | Lapeer, MI | 8.9 mi |
| 48438 | Goodrich, MI | 9 mi |
| 48503 | Flint, MI | 9 mi |
| 48502 | Flint, MI | 9 mi |
Questions about 48423
What is the ZIP+4 code for 48423?
48423 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 48423, you need to look up a specific street address to get them.
What city is 48423?
48423 is assigned to Davison, 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.