ZIP Code 36528 — Dauphin Island, AL
36528 is a standard (street delivery) ZIP code serving Dauphin Island, Alabama, in Mobile 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 36528 at a glance
| ZIP code | 36528 |
|---|---|
| Primary city | Dauphin Island |
| State | Alabama (AL) |
| County | Mobile FIPS 01097 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,852 |
| Coordinates | 30.252530, -88.143810 |
How ZIP+4 works in 36528
The four digits after the hyphen encode a delivery segment inside 36528. 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 36528 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 36528.
| ZIP | City | Distance |
|---|---|---|
| 36523 | Coden, AL | 8.8 mi |
| 36509 | Bayou La Batre, AL | 12.4 mi |
| 36544 | Irvington, AL | 16.2 mi |
| 36582 | Theodore, AL | 18.3 mi |
| 36568 | Saint Elmo, AL | 19.5 mi |
| 36564 | Point Clear, AL | 20.3 mi |
| 36541 | Grand Bay, AL | 20.3 mi |
| 39581 | Pascagoula, MS | 21.9 mi |
| 36532 | Fairhope, AL | 23.1 mi |
| 36619 | Mobile, AL | 23.8 mi |
| 36542 | Gulf Shores, AL | 24.2 mi |
| 36511 | Bon Secour, AL | 24.3 mi |
Questions about 36528
What is the ZIP+4 code for 36528?
36528 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 36528, you need to look up a specific street address to get them.
What city is 36528?
36528 is assigned to Dauphin Island, Alabama, in Mobile 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.