ZIP Code 29920 — Saint Helena Island, SC
29920 is a standard (street delivery) ZIP code serving Saint Helena Island, South Carolina, in Beaufort 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 29920 at a glance
| ZIP code | 29920 |
|---|---|
| Primary city | Saint Helena Island |
| State | South Carolina (SC) |
| County | Beaufort FIPS 45013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 10,606 |
| Coordinates | 32.364410, -80.549460 |
How ZIP+4 works in 29920
The four digits after the hyphen encode a delivery segment inside 29920. 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 29920 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 29920.
| ZIP | City | Distance |
|---|---|---|
| 29907 | Beaufort, SC | 7.1 mi |
| 29905 | Parris Island, SC | 8.5 mi |
| 29902 | Beaufort, SC | 8.5 mi |
| 29935 | Port Royal, SC | 8.7 mi |
| 29904 | Beaufort, SC | 12.8 mi |
| 29906 | Beaufort, SC | 13 mi |
| 29940 | Seabrook, SC | 14.9 mi |
| 29926 | Hilton Head Island, SC | 14.9 mi |
| 29909 | Okatie, SC | 17.9 mi |
| 29446 | Green Pond, SC | 18.2 mi |
| 29928 | Hilton Head Island, SC | 18.7 mi |
| 29438 | Edisto Island, SC | 19.6 mi |
Questions about 29920
What is the ZIP+4 code for 29920?
29920 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 29920, you need to look up a specific street address to get them.
What city is 29920?
29920 is assigned to Saint Helena Island, South Carolina, in Beaufort 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.