Allen ZIP code, South Dakota
The ZIP code for Allen, SD is 57714, and its area code is 605.
- USPS city name
- 1 ZIP code
- Population
- 783
- Area code
- 605
- County
- Bennett County
- State
- South Dakota
NANPA lists no telephone rate centre for Allen itself, so these are the area codes of the nearest one, Martin (14.1 miles). A town on an area-code boundary can differ from its neighbour.
Allen in numbers
About 783 people live in Allen, in 108 households. Median gross rent is $635 a month. The median age is 17.7; 0.0% of adults 25 and over hold a bachelor's degree or higher (31.9% across South Dakota).
| Population | 783 |
|---|---|
| Households | 108 |
| Median age | 17.7 |
| Median gross rent | $635 |
| Bachelor's degree or higher | 0.0% |
| Population density | 241 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Allen CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.
ZIP codes addressed as Allen
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
57714 | Allen , SD | Standard | 1,144 | — | $111,600 |
Map of Allen ZIP codes
The ZIP codes of Allen, SD, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Towns near Allen
The nearest larger towns are Martin (947 people, 12 mi), Manderson-White Horse Creek (833 people, 29 mi) and Gordon, NE (1,721 people, 36 mi).
More nearby: every ZIP code in Bennett County · South Dakota ZIP codes
Cite this page
zipcodes.pro. “Allen, SD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/sd/allen
Underlying data is public domain or openly licensed — sources, vintages and licences.