ZIP code
57751
Keystone, SD
57751 covers Keystone in Pennington County, with 996 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 57751. Methodology
ZIP code map of 57751

About ZIP code 57751
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 57751. Not ACS. Methodology
People in 57751
Race
- White622
- Black or African American2
- American Indian or Alaska Native21
- Asian4
- Native Hawaiian and Pacific Islander1
- Other race15
- Two or more races52
Hispanic or Latino (any race): 27
Age
- Under 1064
- 10 to 1967
- 20 to 2956
- 30 to 3951
- 40 to 4963
- 50 to 59127
- 60 to 69150
- 70 to 79110
- 80 and older29
Income and housing in 57751
Education
- High school graduate94.5%
- Bachelor's degree43.9%
- Graduate degree24.8%
Places covering 57751
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.
- Keystone33.5%
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.
- Pennington County97.1%
- Custer County2.9%
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
66.5% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 57751
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 825 | |
| 2006 | 744 | |
| 2007 | 763 | |
| 2008 | 743 | |
| 2009 | 778 | |
| 2010 | 802 | |
| 2011 | 877 | 805 |
| 2012 | 893 | 780 |
| 2013 | 767 | 760 |
| 2014 | 697 | 800 |
| 2015 | 677 | 770 |
| 2016 | 676 | 780 |
| 2017 | 842 | 820 |
| 2018 | 1,000 | 820 |
| 2019 | 1,075 | 800 |
| 2020 | 1,169 | 800 |
| 2021 | 963 | 830 |
| 2022 | 947 | 900 |
| 2023 | 996 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 57751
12 nearest ZIP centroids (any distance)
- 57702Rapid City11.3 miPop 35,771 · Income $85,700
- 57730Custer14.8 miPop 5,647 · Income $81,911
- 57738Fairburn18.5 miPop 366 · Income $48,750
- 57744Hermosa20.3 miPop 2,211 · Income $110,673
- 57745Hill City20.4 miPop 1,784 · Income $90,089
- 57773Pringle20.7 miPop 198 · Income $43,929
- 57701Rapid City20.8 miPop 45,221 · Income $52,733
- 57718Black Hawk21.0 miPop 7,329 · Income $81,858
- 57703Rapid City21.3 miPop 17,543 · Income $84,495
- 57759Nemo25.6 miPop 393 · Income $127,396
- 57706Ellsworth AFB25.7 miPop 3,009 · Income $58,810
- 57769Piedmont26.9 miPop 4,017 · Income $91,284
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 57751, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 57751 FAQ
- What city is ZIP code 57751 in?
- 57751 is in Keystone, SD.
- What county is 57751 in?
- 57751 is in Pennington County.
- What is the median household income in 57751?
- The median household income in 57751 is $100,714.
- Which ZIP codes are near 57751?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 57751.