ZIP Code 57039 — Lennox, SD
57039 is a standard (street delivery) ZIP code serving Lennox, South Dakota, in Lincoln 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 57039 at a glance
| ZIP code | 57039 |
|---|---|
| Primary city | Lennox |
| State | South Dakota (SD) |
| County | Lincoln FIPS 46083 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,622 |
| Coordinates | 43.336590, -96.867550 |
How ZIP+4 works in 57039
The four digits after the hyphen encode a delivery segment inside 57039. 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 57039 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 57039.
| ZIP | City | Distance |
|---|---|---|
| 57077 | Worthing, SD | 5.7 mi |
| 57021 | Davis, SD | 7.1 mi |
| 57064 | Tea, SD | 8.2 mi |
| 57015 | Chancellor, SD | 8.2 mi |
| 57032 | Harrisburg, SD | 10.9 mi |
| 57106 | Sioux Falls, SD | 12 mi |
| 57108 | Sioux Falls, SD | 12.7 mi |
| 57013 | Canton, SD | 12.8 mi |
| 57105 | Sioux Falls, SD | 14.4 mi |
| 57053 | Parker, SD | 14.4 mi |
| 57197 | Sioux Falls, SD | 14.5 mi |
| 57036 | Hurley, SD | 14.6 mi |
Questions about 57039
What is the ZIP+4 code for 57039?
57039 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 57039, you need to look up a specific street address to get them.
What city is 57039?
57039 is assigned to Lennox, South Dakota, in Lincoln 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.