ZIP Code 57730 Map
Census ZIP Code Tabulation Area 57730 in Custer, SD (Custer County). ZCTA boundaries closely approximate USPS delivery areas.
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ZIP 57730 Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
5,596
Households
2,733
Median household income
$83,469
Median age
57.9 years
Median home value
$378,800
Median gross rent
$1,087/mo
Owner-occupied homes
80.4%
Bachelor's degree or higher
34%
Below poverty level
10%
Land area
516.2 sq mi
Population density
11 / sq mi