ZIP Code 29404 — Charleston Afb, SC
29404 is a standard (street delivery) ZIP code serving Charleston Afb, South Carolina, in Charleston 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 29404 at a glance
| ZIP code | 29404 |
|---|---|
| Primary city | Charleston Afb |
| State | South Carolina (SC) |
| County | Charleston FIPS 45019 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,334 |
| Coordinates | 32.897830, -80.052460 |
How ZIP+4 works in 29404
The four digits after the hyphen encode a delivery segment inside 29404. 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 29404 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 29404.
| ZIP | City | Distance |
|---|---|---|
| 29418 | North Charleston, SC | 0.9 mi |
| 29406 | Charleston, SC | 2.8 mi |
| 29410 | Hanahan, SC | 3.6 mi |
| 29420 | North Charleston, SC | 3.6 mi |
| 29414 | Charleston, SC | 4.9 mi |
| 29405 | North Charleston, SC | 5.3 mi |
| 29456 | Ladson, SC | 6.9 mi |
| 29407 | Charleston, SC | 7.5 mi |
| 29445 | Goose Creek, SC | 7.8 mi |
| 29409 | Charleston, SC | 8.8 mi |
| 29485 | Summerville, SC | 8.8 mi |
| 29403 | Charleston, SC | 9 mi |
Questions about 29404
What is the ZIP+4 code for 29404?
29404 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 29404, you need to look up a specific street address to get them.
What city is 29404?
29404 is assigned to Charleston Afb, South Carolina, in Charleston 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.