ZIP Code 36421 — Andalusia, AL
36421 is a standard (street delivery) ZIP code serving Andalusia, Alabama, in Covington 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 36421 at a glance
| ZIP code | 36421 |
|---|---|
| Primary city | Andalusia |
| State | Alabama (AL) |
| County | Covington FIPS 01039 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 9,799 |
| Coordinates | 31.327690, -86.509030 |
How ZIP+4 works in 36421
The four digits after the hyphen encode a delivery segment inside 36421. 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 36421 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.
Other ZIP codes in Andalusia
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 36421.
| ZIP | City | Distance |
|---|---|---|
| 36476 | River Falls, AL | 2.8 mi |
| 36038 | Gantt, AL | 5.7 mi |
| 36474 | Red Level, AL | 9.5 mi |
| 36420 | Andalusia, AL | 10.9 mi |
| 36028 | Dozier, AL | 13.5 mi |
| 36467 | Opp, AL | 15.3 mi |
| 36442 | Florala, AL | 19.5 mi |
| 36009 | Brantley, AL | 21.4 mi |
| 36483 | Wing, AL | 22.2 mi |
| 36453 | Kinston, AL | 23.1 mi |
| 36455 | Lockhart, AL | 23.6 mi |
| 36456 | Mckenzie, AL | 25.1 mi |
Questions about 36421
What is the ZIP+4 code for 36421?
36421 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 36421, you need to look up a specific street address to get them.
What city is 36421?
36421 is assigned to Andalusia, Alabama, in Covington 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.