Saint Charles, SD · standard
ZIP Code 57571
Gregory County, South Dakota - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 14
- 14/sq mi Moderate-density area
- 15.4%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Saint Charles has 14 residents, placing it among the least populous of the 33,099 US ZIP codes with a reported population, at 14 people per square mile.
Source: USPS ZIP record + U.S. Census Bureau ZIP population. Rank compares ZIP 57571 against every US ZIP with a reported population; income/home-value percentiles are not available for this ZIP.
ZIP code 57571 is a sparsely populated ZIP (a standard USPS delivery area) in Saint Charles, Gregory County, South Dakota, home to just 14 residents across 1.0 square miles, a density of 14 people per square mile, in the Chicago time zone.
With fewer than 100 residents on file, this page keeps the Census figures below and skips the multi-chart expansion used on larger ZIPs. Small-N ACS estimates are already unstable enough without padding the page around them.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 57571, Saint Charles, SD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
14
Population
1.0
Area (sq mi)
14
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 57571?
56.5
Median Age
54.5%
Male
45.5%
Female
0.0%
Foreign-Born
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$17,418
Per Capita Income
13.6%
Poverty Rate
11.1%
Unemployment Rate
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
29housing units
29
Total Housing Units
12
Occupied Units
17
Vacant Units
1.83
Avg Household Size
Occupancy Type
1938
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
Nearby ZIP Codes
Want a side-by-side? Compare 57571 vs 57538 →
Related Areas
Frequently Asked Questions
What county is ZIP code 57571 in?
ZIP code 57571 (Saint Charles) is located in Gregory County, South Dakota. Gregory County contains multiple ZIP codes, see the full list at /counties/gregory-sd.
What is the population of ZIP code 57571?
ZIP code 57571 in Saint Charles, SD has a population of 14 according to the Census Bureau ACS 2023 estimates.
Take this with you
What to do with ZIP 57571's numbers, next.
- See how ZIP 57571 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Saint Charles, SD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.