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ZIP Code 57730
Custer, SD, Custer County
Population
5,596
Land area
516.2sq mi
People per sq mi
11
City
Custer
ZIP 57730 and nearby ZIP codes
ZIP 57730 at a glance
- The median household income is $83,469, 11% above the South Dakota median of $75,081.
- A typical owner-occupied home is valued at $378,800 (47% above South Dakota) and median rent is $1,087 a month.
Local data for ZIP 57730
Counts from official public data
Housing and community stats
ZIP 57730, American Community Survey 2020-2024
Median household income
$83,469
Poverty rate
10.0%
Median home value
$378,800
Prices +9.7% in a year
Median rent
$1,087/mo
Homeownership
80.4%
Bachelor's or higher
34.0%
Median age
57.9
Average commute
26.1 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
242
ZIP Business Patterns 2023
Employees
1,254
$62.1M annual payroll
PPP loans
$8.9M
249 loans
Campaign donations
$46.4K
12% D, 54% R, 2026 cycle
Environment and hazard risk
ZIP 57730, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: wildfire
Storm events since 1996
1,618
Countywide, mostly hail
Flood insurance policies
44
0.8% of homes, county
July high / Jan low
79° / 15°F
19.8 inches of rain a year
Health statistics
Share of adults in ZIP 57730, CDC PLACES estimates
Obesity
33.7%
U.S. 33.3% about the same
Diabetes
14.1%
U.S. 12.1% +2.0 pts
Smoking
13.7%
U.S. 12.8% +0.9 pts
Uninsured (18-64)
6.6%
U.S. 11.1% -4.5 pts
Frequently asked questions
- What city is ZIP code 57730?
- ZIP code 57730 is in Custer, SD (Custer County).
- What county is ZIP code 57730 in?
- ZIP code 57730 is mostly in Custer County, South Dakota.
- How many people live in ZIP code 57730?
- About 5,596 people live in the 57730 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.