57633 ZIP Code, Isabel, SD
57633 is a ZIP code in Isabel, South Dakota — mostly in Corson County (44% of its land), with smaller parts in Ziebach and Dewey counties. It covers 813 square miles of land. The closest ZIP codes are 57656. 445 people live here in 183 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (77%). Median household income is $78,750, close to the South Dakota median of $75,081; 40% of households have children under 18.
Quick facts
- Mailing city: Isabel, SD
- County: Corson County
- Land area: 813 sq mi
- Population: 445
- Median household income: $78,750
Key figures
| Measure | Value |
|---|---|
| Residents | 445 |
| Households | 183 |
| Median household income | $78,750 |
| Income per person | $37,567 |
| Median age | 36.5 |
| Homeowners | 76.5% |
| Median home value | $70,000 |
| Median rent | $818 |
| Bachelor's degree or higher | 20.9% |
| Average commute (minutes) | 16.5 |
| Households with kids under 18 | 40.4% |
| Moved in the past year | 7.9% |
| Below the poverty line | 7.6% |
| Broadband internet | 93.4% |
| Speak a non-English language at home | 2.5% |
Household income
| % of households | Value |
|---|---|
| <$10K | 4.9% |
| $10–15K | 1.6% |
| $15–25K | 3.3% |
| $25–35K | 3.3% |
| $35–50K | 6.0% |
| $50–75K | 29.5% |
| $75–100K | 12.6% |
| $100–150K | 12.0% |
| $150–200K | 8.7% |
| $200K+ | 18.0% |
Age
| % of all residents | Value |
|---|---|
| <10 | 16.6% |
| 10–19 | 20.9% |
| 20–24 | 2.2% |
| 25–34 | 7.2% |
| 35–44 | 22.7% |
| 45–54 | 5.4% |
| 55–64 | 11.4% |
| 65–74 | 7.9% |
| 75+ | 5.6% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 13.9% |
| Owned outright | 53.1% |
| Rented | 20.6% |
| Vacant | 12.4% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 80.4% |
| Townhome | 0.0% |
| 2–4 units | 0.0% |
| 5–19 units | 0.0% |
| 20+ units | 0.0% |
| Mobile / other | 19.6% |
Businesses in 57633
19 business establishments with 99 employees (ZIP Codes Business Patterns 2023).
- Wholesale Trade: 4
- Accommodation and Food Services: 4
EDDM carrier routes
See every USPS carrier route in 57633 with residential and business mailbox counts on the route map. Open the EDDM route map.
Nearby ZIP codes
- 57656 — Timber Lake city, SD (20.7 mi)
Areas that include 57633
- Isabel, SD ZIP codes — 1 ZIP code
- Corson County ZIP codes — 14 ZIP codes
- Dewey County ZIP codes — 10 ZIP codes
- Ziebach County ZIP codes — 7 ZIP codes
- South Dakota ZIP code data
Mail every home in 57633
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) 57633, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 57633 in?
- 57633 is a Isabel, SD mailing address. None of its land lies inside a Census-defined city or community.
- What county is 57633 in?
- 57633 is mostly in Corson County (44% of its land), with smaller parts in Ziebach and Dewey counties.
- What is the population of 57633?
- About 445 people (±118), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 404.
- What is the median household income in 57633?
- $78,750 (±$20,185), 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 57633?
- EDDM2GO's stored route library does not include 57633 yet. The EDDM route map loads its carrier routes and mailbox counts when you search the ZIP code.
- What ZIP codes are near 57633?
- The closest, measured center to center: 57656 (20.7 mi, Timber Lake).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.