ZIP code
57633
Isabel, SD
57633 covers Isabel in Dewey County, with 421 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 57633. Methodology
ZIP code map of 57633

About ZIP code 57633
Acceptable cities: Firesteel
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 57633. Not ACS. Methodology
People in 57633
Race
- White279
- Black or African American1
- American Indian or Alaska Native91
- Two or more races33
Hispanic or Latino (any race): 1
Age
- Under 1042
- 10 to 1958
- 20 to 2942
- 30 to 3962
- 40 to 4933
- 50 to 5945
- 60 to 6970
- 70 to 7935
- 80 and older17
Income and housing in 57633
Education
- High school graduate91.7%
- Bachelor's degree20.2%
- Graduate degree7.2%
Places covering 57633
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- Isabel35.9%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Dewey County56.9%
- Corson County28.7%
- Ziebach County14.4%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
64.1% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 57633
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 496 | |
| 2006 | 456 | |
| 2007 | 456 | |
| 2009 | 425 | |
| 2010 | 405 | |
| 2011 | 615 | 422 |
| 2012 | 558 | 440 |
| 2013 | 537 | 440 |
| 2014 | 447 | 420 |
| 2015 | 458 | 390 |
| 2016 | 435 | 390 |
| 2017 | 437 | 380 |
| 2018 | 427 | 350 |
| 2019 | 400 | 360 |
| 2020 | 417 | 350 |
| 2021 | 415 | 400 |
| 2022 | 402 | 400 |
| 2023 | 421 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 57633
12 nearest ZIP centroids (any distance)
- 57656Timber Lake20.7 miPop 911 · Income $63,571
- 57660Watauga27.0 miPop 119 · Income $72,500
- 57644Meadow27.3 miPop 265 · Income $63,750
- 57634Keldron28.0 miPop 155 · Income —
- 57636Lantry28.6 miPop 66 · Income $92,500
- 57661Whitehorse29.5 miPop 152 · Income $56,250
- 57623Dupree30.0 miPop 955 · Income $55,865
- 57621Bullhead31.6 miPop 285 · Income $32,614
- 57641Mc Intosh33.2 miPop 244 · Income $56,667
- 57645Morristown33.4 miPop 149 · Income $73,000
- 57630Glencross34.2 miPop 21 · Income $197,500
- 57657Trail City36.3 miPop 203 · Income $97,500
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 57633, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
Default is 2 miles. Distances are between ZIP centroids. Widen the radius if nothing is in range.
ZIP code 57633 FAQ
- What city is ZIP code 57633 in?
- 57633 is in Isabel, SD.
- What county is 57633 in?
- 57633 is in Dewey County.
- What is the median household income in 57633?
- The median household income in 57633 is $88,750.
- Which ZIP codes are near 57633?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 57633.