ZIP Code 35803 — Huntsville, AL
35803 is a standard (street delivery) ZIP code serving Huntsville, Alabama, in Madison 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 35803 at a glance
| ZIP code | 35803 |
|---|---|
| Primary city | Huntsville |
| State | Alabama (AL) |
| County | Madison FIPS 01089 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 29,197 |
| Coordinates | 34.564760, -86.521850 |
How ZIP+4 works in 35803
The four digits after the hyphen encode a delivery segment inside 35803. 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 35803 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 Huntsville
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 35803.
| ZIP | City | Distance |
|---|---|---|
| 35763 | Owens Cross Roads, AL | 5 mi |
| 35754 | Laceys Spring, AL | 6 mi |
| 35802 | Huntsville, AL | 7.8 mi |
| 35760 | New Hope, AL | 8 mi |
| 35175 | Union Grove, AL | 8.8 mi |
| 35808 | Huntsville, AL | 8.9 mi |
| 35775 | Valhermoso Springs, AL | 10 mi |
| 35741 | Brownsboro, AL | 11.3 mi |
| 35801 | Huntsville, AL | 11.3 mi |
| 35805 | Huntsville, AL | 11.4 mi |
| 35748 | Gurley, AL | 13 mi |
| 35747 | Grant, AL | 13.3 mi |
Questions about 35803
What is the ZIP+4 code for 35803?
35803 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 35803, you need to look up a specific street address to get them.
What city is 35803?
35803 is assigned to Huntsville, Alabama, in Madison 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.