ZIP Code 57751 Map
Census ZIP Code Tabulation Area 57751 in Keystone, SD (Pennington County). ZCTA boundaries closely approximate USPS delivery areas.
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ZIP 57751 Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
893
Households
327
Median household income
$97,969
Median age
54.2 years
Median home value
$473,500
Median gross rent
$600/mo
Owner-occupied homes
85.6%
Bachelor's degree or higher
43%
Below poverty level
4.6%
Land area
44.2 sq mi
Population density
20 / sq mi