ZIP Code 48422 — Croswell, MI
48422 is a standard (street delivery) ZIP code serving Croswell, Michigan, in Sanilac 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 48422 at a glance
| ZIP code | 48422 |
|---|---|
| Primary city | Croswell |
| State | Michigan (MI) |
| County | Sanilac FIPS 26151 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 6,094 |
| Coordinates | 43.262650, -82.650690 |
How ZIP+4 works in 48422
The four digits after the hyphen encode a delivery segment inside 48422. 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 48422 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 48422.
| ZIP | City | Distance |
|---|---|---|
| 48450 | Lexington, MI | 5.5 mi |
| 48401 | Applegate, MI | 6.2 mi |
| 48466 | Peck, MI | 8.4 mi |
| 48032 | Jeddo, MI | 9.4 mi |
| 48454 | Melvin, MI | 9.5 mi |
| 48419 | Carsonville, MI | 11.5 mi |
| 48469 | Port Sanilac, MI | 13 mi |
| 48097 | Yale, MI | 13 mi |
| 48006 | Avoca, MI | 13.1 mi |
| 48059 | Fort Gratiot, MI | 14.6 mi |
| 48471 | Sandusky, MI | 14.8 mi |
| 48049 | North Street, MI | 16.1 mi |
Questions about 48422
What is the ZIP+4 code for 48422?
48422 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 48422, you need to look up a specific street address to get them.
What city is 48422?
48422 is assigned to Croswell, Michigan, in Sanilac 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.