ZIP Code 29550 — Hartsville, SC
29550 is a standard (street delivery) ZIP code serving Hartsville, South Carolina, in Darlington 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 29550 at a glance
| ZIP code | 29550 |
|---|---|
| Primary city | Hartsville |
| State | South Carolina (SC) |
| County | Darlington FIPS 45031 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 29,924 |
| Coordinates | 34.393090, -80.075950 |
How ZIP+4 works in 29550
The four digits after the hyphen encode a delivery segment inside 29550. 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 29550 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 29550.
| ZIP | City | Distance |
|---|---|---|
| 29079 | Lydia, SC | 7.5 mi |
| 29101 | Mcbee, SC | 11 mi |
| 29584 | Patrick, SC | 12.7 mi |
| 29540 | Darlington, SC | 12.9 mi |
| 29069 | Lamar, SC | 14.2 mi |
| 29593 | Society Hill, SC | 14.4 mi |
| 29532 | Darlington, SC | 14.8 mi |
| 29010 | Bishopville, SC | 16.5 mi |
| 29009 | Bethune, SC | 17.4 mi |
| 29501 | Florence, SC | 19.3 mi |
| 29046 | Elliott, SC | 20 mi |
| 29161 | Timmonsville, SC | 21.3 mi |
Questions about 29550
What is the ZIP+4 code for 29550?
29550 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 29550, you need to look up a specific street address to get them.
What city is 29550?
29550 is assigned to Hartsville, South Carolina, in Darlington 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.