ZIP Code 49323 — Dorr, MI
49323 is a standard (street delivery) ZIP code serving Dorr, Michigan, in Allegan 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 49323 at a glance
| ZIP code | 49323 |
|---|---|
| Primary city | Dorr |
| State | Michigan (MI) |
| County | Allegan FIPS 26005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 11,073 |
| Coordinates | 42.725410, -85.787100 |
How ZIP+4 works in 49323
The four digits after the hyphen encode a delivery segment inside 49323. 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 49323 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 49323.
| ZIP | City | Distance |
|---|---|---|
| 49315 | Byron Center, MI | 5.8 mi |
| 49335 | Moline, MI | 6.2 mi |
| 49328 | Hopkins, MI | 6.7 mi |
| 49348 | Wayland, MI | 9.1 mi |
| 49419 | Hamilton, MI | 10.2 mi |
| 49418 | Grandville, MI | 10.5 mi |
| 49426 | Hudsonville, MI | 11 mi |
| 49548 | Grand Rapids, MI | 11.7 mi |
| 49519 | Wyoming, MI | 12.5 mi |
| 49316 | Caledonia, MI | 12.7 mi |
| 49509 | Wyoming, MI | 12.8 mi |
| 49464 | Zeeland, MI | 12.8 mi |
Questions about 49323
What is the ZIP+4 code for 49323?
49323 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 49323, you need to look up a specific street address to get them.
What city is 49323?
49323 is assigned to Dorr, Michigan, in Allegan 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.