ZIP Code 57714 — Allen, SD
57714 is a standard (street delivery) ZIP code serving Allen, South Dakota, in Bennett 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 57714 at a glance
| ZIP code | 57714 |
|---|---|
| Primary city | Allen |
| State | South Dakota (SD) |
| County | Bennett FIPS 46007 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 1,144 |
| Coordinates | 43.326890, -101.918430 |
How ZIP+4 works in 57714
The four digits after the hyphen encode a delivery segment inside 57714. 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 57714 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 57714.
| ZIP | City | Distance |
|---|---|---|
| 57551 | Martin, SD | 14.9 mi |
| 57752 | Kyle, SD | 16.3 mi |
| 57577 | Wanblee, SD | 18.8 mi |
| 57750 | Interior, SD | 19 mi |
| 57716 | Batesland, SD | 22.8 mi |
| 57547 | Long Valley, SD | 26.3 mi |
| 57794 | Wounded Knee, SD | 28.3 mi |
| 57756 | Manderson, SD | 28.6 mi |
| 57574 | Tuthill, SD | 31.7 mi |
| 57543 | Kadoka, SD | 35.2 mi |
| 69365 | Whiteclay, NE | 37.8 mi |
| 57780 | Scenic, SD | 41.2 mi |
Questions about 57714
What is the ZIP+4 code for 57714?
57714 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 57714, you need to look up a specific street address to get them.
What city is 57714?
57714 is assigned to Allen, South Dakota, in Bennett 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.