ZIP Code 05403 — South Burlington, VT
05403 is a standard (street delivery) ZIP code serving South Burlington, Vermont, in Chittenden 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 05403 at a glance
| ZIP code | 05403 |
|---|---|
| Primary city | South Burlington |
| State | Vermont (VT) |
| County | Chittenden FIPS 50007 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 20,614 |
| Coordinates | 44.447000, -73.172290 |
How ZIP+4 works in 05403
The four digits after the hyphen encode a delivery segment inside 05403. 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 05403 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 05403.
| ZIP | City | Distance |
|---|---|---|
| 05405 | Burlington, VT | 2.3 mi |
| 05401 | Burlington, VT | 2.9 mi |
| 05404 | Winooski, VT | 3.4 mi |
| 05439 | Colchester, VT | 3.4 mi |
| 05495 | Williston, VT | 4.1 mi |
| 05482 | Shelburne, VT | 5.2 mi |
| 05408 | Burlington, VT | 5.7 mi |
| 05452 | Essex Junction, VT | 7.5 mi |
| 05446 | Colchester, VT | 7.7 mi |
| 05477 | Richmond, VT | 9.6 mi |
| 05461 | Hinesburg, VT | 9.6 mi |
| 05445 | Charlotte, VT | 10 mi |
Questions about 05403
What is the ZIP+4 code for 05403?
05403 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 05403, you need to look up a specific street address to get them.
What city is 05403?
05403 is assigned to South Burlington, Vermont, in Chittenden 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.