ZIP Code 29821 — Clarks Hill, SC
29821 is a standard (street delivery) ZIP code serving Clarks Hill, South Carolina, in Edgefield 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 29821 at a glance
| ZIP code | 29821 |
|---|---|
| Primary city | Clarks Hill |
| State | South Carolina (SC) |
| County | Edgefield FIPS 45037 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,141 |
| Coordinates | 33.642420, -82.116670 |
How ZIP+4 works in 29821
The four digits after the hyphen encode a delivery segment inside 29821. 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 29821 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 29821.
| ZIP | City | Distance |
|---|---|---|
| 30809 | Evans, GA | 6.6 mi |
| 29838 | Modoc, SC | 7 mi |
| 29860 | North Augusta, SC | 8.4 mi |
| 30907 | Augusta, GA | 8.5 mi |
| 29844 | Parksville, SC | 11.3 mi |
| 30802 | Appling, GA | 11.9 mi |
| 30909 | Augusta, GA | 12 mi |
| 30904 | Augusta, GA | 12.8 mi |
| 29841 | North Augusta, SC | 13 mi |
| 30813 | Grovetown, GA | 13.3 mi |
| 29845 | Plum Branch, SC | 13.5 mi |
| 29824 | Edgefield, SC | 13.8 mi |
Questions about 29821
What is the ZIP+4 code for 29821?
29821 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 29821, you need to look up a specific street address to get them.
What city is 29821?
29821 is assigned to Clarks Hill, South Carolina, in Edgefield 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.