Little Eagle, SD · standard
ZIP Code 57639
Corson County, South Dakota - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 371
- 7/sq mi Low-density area
- $21,250
- Median income Below-median income area
- 0.0%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Little Eagle pairs one of the lowest household incomes in the country, in a rural, renter-heavy area.
- Lowest
- household income, US ZIPs
- 7
- people per sq mi
- 11%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 57639 against every reporting US ZIP.
ZIP code 57639 is a sparsely populated ZIP (a standard USPS delivery area) in Little Eagle, Corson County, South Dakota, home to just 371 residents across 53.8 square miles, a density of 7 people per square mile, in the Denver time zone.
ZIP 57639 sits on the lower end of the income spectrum: median household income is $21,250 (72% below the average South Dakota ZIP), while per-capita income is $5,346. Economic pressure is pronounced: 74.5% of residents are below the poverty line and unemployment is 55.1%. The ACS does not report a median home value for this ZIP, so housing cost context is limited to the available tenure and rent fields.
Formal educational attainment runs low here: just 0.0% of adults hold a bachelor's degree or higher, the median age is 18.7, and the average commute is -. The page also surfaces 1 ZIP codes within roughly 10 miles and 6 more in Corson County, so 57639 can be compared with both its immediate and county-level context.
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 57639, Little Eagle, 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
371
Population
53.8
Area (sq mi)
7
People / sq mi
Denver
Time Zone
standard
ZIP Type
Who lives in ZIP 57639?
18.7
Median Age
52.1%
Male
47.9%
Female
0.0%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$21,250
Median Household Income
-72% vs state ZIP avg
$5,346
Per Capita Income
74.5%
Poverty Rate
55.1%
Unemployment Rate
How ZIP 57639 ranks among South Dakota ZIPs
Little Eagle, SD household income vs. every South Dakota ZIP code
Median household income among 337 reporting South Dakota ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$21,250 1st percentile higher than 1% of 337 South Dakota ZIPs
Each bar is a $20K-wide band; taller bars hold more South Dakota ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
87housing units
87
Total Housing Units
72
Occupied Units
15
Vacant Units
4.03
Avg Household Size
Occupancy Type
$243
Median Rent
1983
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
Nearby ZIP Codes
Want a side-by-side? Compare 57639 vs 57642 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 57642 | Mc Laughlin, SD | 1,917 | 7.5 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 57639, both outside SD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Corson County
Related Areas
Frequently Asked Questions
What county is ZIP code 57639 in?
ZIP code 57639 (Little Eagle) is located in Corson County, South Dakota. Corson County contains multiple ZIP codes, see the full list at /counties/corson-sd.
What is the population of ZIP code 57639?
ZIP code 57639 in Little Eagle, SD has a population of 371 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 57639?
The median household income in ZIP 57639 is $21,250, which is 72% below the national average of $76,288.
What is the demographic makeup of ZIP 57639?
The largest racial group in ZIP 57639 is American Indian or Alaska Native at 98.3%. Hispanic or Latino residents make up 1.7% of the population.
What percentage of residents own vs. rent in ZIP 57639?
In ZIP code 57639, approximately 11.1% of occupied housing units are owner-occupied and 88.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 57639?
The poverty rate in ZIP code 57639 is 74.5% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 57639's numbers, next.
- See how ZIP 57639 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Little Eagle, SD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.