57231 ZIP Code, De Smet, SD
57231 is a ZIP code in De Smet, South Dakota in Kingsbury County. It covers 249 square miles of land. The closest ZIP codes are 57249, 57353 and 57233. 1,724 people live here in 721 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (87%). Median household income is $78,646, close to the South Dakota median of $75,081.
Quick facts
- Mailing city: De Smet, SD
- County: Kingsbury County
- Land area: 249 sq mi
- Population: 1,724
- Median household income: $78,646
Key figures
| Measure | Value |
|---|---|
| Residents | 1,724 |
| Households | 721 |
| Median household income | $78,646 |
| Income per person | $41,058 |
| Median age | 44.2 |
| Homeowners | 86.7% |
| Median home value | $212,200 |
| Median rent | $725 |
| Bachelor's degree or higher | 24.8% |
| Average commute (minutes) | 13.5 |
| Households with kids under 18 | 27.9% |
| Moved in the past year | 3.9% |
| Below the poverty line | 8.8% |
| Broadband internet | 89.6% |
| Speak a non-English language at home | 0.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.5% |
| $10–15K | 2.1% |
| $15–25K | 7.2% |
| $25–35K | 3.3% |
| $35–50K | 11.8% |
| $50–75K | 21.4% |
| $75–100K | 14.0% |
| $100–150K | 21.9% |
| $150–200K | 8.2% |
| $200K+ | 7.6% |
Age
| % of all residents | Value |
|---|---|
| <10 | 15.9% |
| 10–19 | 10.0% |
| 20–24 | 4.2% |
| 25–34 | 10.0% |
| 35–44 | 11.5% |
| 45–54 | 6.7% |
| 55–64 | 15.4% |
| 65–74 | 16.2% |
| 75+ | 10.1% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 30.0% |
| Owned outright | 41.4% |
| Rented | 10.9% |
| Vacant | 17.7% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 81.5% |
| Townhome | 0.7% |
| 2–4 units | 5.1% |
| 5–19 units | 1.1% |
| 20+ units | 1.1% |
| Mobile / other | 10.4% |
Businesses in 57231
77 business establishments with 720 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 14
- Construction: 11
- Other Services (except Public Administration): 10
- Health Care and Social Assistance: 9
- Finance and Insurance: 7
- Manufacturing: 6
- Arts, Entertainment, and Recreation: 4
- Wholesale Trade: 3
EDDM carrier routes
See every USPS carrier route in 57231 with residential and business mailbox counts on the route map. Open the EDDM route map.
Nearby ZIP codes
- 57249 — Lake Preston city, SD (10.5 mi)
- 57353 — Iroquois city, SD (12.5 mi)
- 57233 — Erwin town, SD (12.9 mi)
- 57051 — Oldham city, SD (15.8 mi)
- 57323 — Carthage city, SD (16.1 mi)
- 57221 — Bryant city, SD (17.5 mi)
- 57278 — Willow Lake city, SD (19.5 mi)
- 57214 — Badger town, SD (20.4 mi)
Areas that include 57231
- De Smet, SD ZIP codes — 1 ZIP code
- Kingsbury County ZIP codes — 9 ZIP codes
- South Dakota ZIP code data
Mail every home in 57231
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 57231, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 57231 in?
- 57231 is a De Smet, SD mailing address. None of its land lies inside a Census-defined city or community.
- What county is 57231 in?
- 57231 is in Kingsbury County.
- What is the population of 57231?
- About 1,724 people (±149), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 1,674.
- What is the median household income in 57231?
- $78,646 (±$13,703), compared with $75,081 for South Dakota as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 57231?
- EDDM2GO's stored route library does not include 57231 yet. The EDDM route map loads its carrier routes and mailbox counts when you search the ZIP code.
- What ZIP codes are near 57231?
- The closest, measured center to center: 57249 (10.5 mi, Lake Preston), 57353 (12.5 mi, Iroquois), 57233 (12.9 mi, Erwin), 57051 (15.8 mi, Oldham), 57323 (16.1 mi, Carthage) and 57221 (17.5 mi, Bryant).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.