Residential delivery area · South Dakota
ZIP Code 57633: Isabel, SD
ZIP code 57633 uses the postal name Isabel, South Dakota and lies mostly in Corson County (44% of its land), reaching into Ziebach County and Dewey County (Census 2020 ZIP-county file). About 450 people live there (Census Bureau, ACS 2020-2024). Median household income is $78,750 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Isabel; more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- ZBP2023
- IRS2022
- Town
- Isabel · its only residential ZIP
- County
- Corson County (44%); Ziebach County (34%); Dewey County (21%)
- Census places
- Isabel
- House district
- SD at large 119th Congress
- State
- South Dakota
- Time zone
- Mountain
- Land area
- 812.6 sq mi · under 1 person per sq mi
Where is ZIP code 57633?
57633 centers on 45.442°, -101.532° and covers 812.6 square miles of land plus 2.7 of water. It borders 8 ZIP codes: 57656, 57660, 57644, 57623, 57641, 57645, 57625, 57626.
The map draws ZIP code areas only. For the streets inside 57633, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 57633 compare with the rest of Corson County?
| Measure | 57633 | In Corson County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 445 | 5th of 15 | 220th of 375 |
| Median household income | $79k | not ranked | not ranked |
| Median home value | $70k | not ranked | not ranked |
57633's income and home value are not ranked: it has fewer than 1,000 residents (445). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 3% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 57633?
The 2020 Census counted 404 people in 57633; the ACS, which samples households over 2020-2024, estimates 445. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 445±118 (90% margin)
- 2020 Census count
- 404
- Households
- 183
- Median age
- 36.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 57633?
Of the 445 people the ACS estimates in 57633, 34.6% are under 18 and 13.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (74.4%), then Other or two or more (25.2%).
- Under 1834.6%
- 18 to 6451.9%
- 65 and older13.5%
- White, not Hispanic74.4%
- Other or two or more25.2%
- Black, not Hispanic0.4%
- Hispanic or Latino0.0%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 57633 earn?
Median household income is $78,750 (ACS 2020-2024).
- Median household income
- $78,750±$20,185
- Income per person
- $37,567
- Below the poverty line
- 7.6%
- Unemployed (of the labor force)
- 6.8%
- Adults 25+ with a bachelor's degree
- 20.9%
- Adjusted gross income per tax return, 2022
- $57,924210 returns; wages 56% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 57633?
- Median home value (owners' estimate)
- $70,000
- Median gross rent
- $818
- Homes owned by their occupants
- 76.5%
- Housing units
- 209
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).
What businesses are in 57633?
19 business establishments had a location in this ZIP code in 2023, 2 more than in 2018; the most are in wholesale trade (ZIP Code Business Patterns).
- Wholesale trade4
- Accommodation and food services4
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 57633?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57656 | Timber Lake | 1,000 | $66k | 20.7 mi |
| 57660 | Watauga | 111 | $67k | 27.0 mi |
| 57644 | Meadow | 388 | $68k | 27.3 mi |
| 57623 | Dupree | 902 | $60k | 30.0 mi |
| 57641 | McIntosh | 215 | $84k | 33.2 mi |
| 57645 | Morristown | 184 | $57k | 33.4 mi |
| 57625 | Eagle Butte | 3,775 | $43k | 40.4 mi |
| 57626 | Faith | 979 | $68k | 43.8 mi |
| 57634 | Keldron | 131 | $88k | 28.0 mi (near) |
| 57636 | Lantry | 104 | $112k | 28.6 mi (near) |
| 57661 | Whitehorse | 177 | $55k | 29.5 mi (near) |
| 57621 | Bullhead | 294 | $33k | 31.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.