ZIP Code 29431 — Bonneau, SC
29431 is a standard (street delivery) ZIP code serving Bonneau, South Carolina, in Berkeley 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 29431 at a glance
| ZIP code | 29431 |
|---|---|
| Primary city | Bonneau |
| State | South Carolina (SC) |
| County | Berkeley FIPS 45015 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 7,580 |
| Coordinates | 33.277080, -79.877110 |
How ZIP+4 works in 29431
The four digits after the hyphen encode a delivery segment inside 29431. 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 29431 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 29431.
| ZIP | City | Distance |
|---|---|---|
| 29479 | Saint Stephen, SC | 7.2 mi |
| 29434 | Cordesville, SC | 9.6 mi |
| 29461 | Moncks Corner, SC | 10.5 mi |
| 29564 | Lane, SC | 13.8 mi |
| 29450 | Huger, SC | 14.4 mi |
| 29469 | Pinopolis, SC | 14.8 mi |
| 29468 | Pineville, SC | 15.1 mi |
| 29453 | Jamestown, SC | 15.8 mi |
| 29436 | Cross, SC | 17.9 mi |
| 29486 | Summerville, SC | 19.4 mi |
| 29590 | Salters, SC | 19.5 mi |
| 29510 | Andrews, SC | 19.6 mi |
Questions about 29431
What is the ZIP+4 code for 29431?
29431 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 29431, you need to look up a specific street address to get them.
What city is 29431?
29431 is assigned to Bonneau, South Carolina, in Berkeley 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.