Grenville, SD · standard
ZIP Code 57239
Day County, South Dakota - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 223
- 2/sq mi Low-density area
- $106,389
- Median income Above-median income area
- $377,300
- Median home value Above-median home value
- 34.9%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Grenville pairs an upper-quartile household income with upper-quartile home values, in a rural, homeowner-dominated area.
- Top 15%
- household income, US ZIPs
- Top 23%
- home value, US ZIPs
- 2
- people per sq mi
- 89%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 57239 against every reporting US ZIP.
ZIP code 57239 is a sparsely populated ZIP (a standard USPS delivery area) in Grenville, Day County, South Dakota, home to just 223 residents across 117.4 square miles, a density of 2 people per square mile, in the Chicago time zone.
ZIP 57239 lands in the middle-income range, with a median household income of $106,389 (39% above the average South Dakota ZIP), while per-capita income is $58,270. Both reported hardship measures are comparatively low in absolute terms: poverty is 5.3% and unemployment is 0.0%. Housing is both higher-cost and owner-heavy: median home value is $377,300 (97% above the average South Dakota ZIP), while 88.7% of occupied homes are owner-occupied.
A solid share of residents have a four-year degree: 34.9% of adults hold a bachelor's degree or higher, the median age is 63.2, and the average commute is -. The page also surfaces 1 ZIP codes within roughly 10 miles and 6 more in Day County, so 57239 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 57239, Grenville, 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
223
Population
117.4
Area (sq mi)
2
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 57239?
63.2
Median Age
60.1%
Male
39.9%
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?
$106,389
Median Household Income
+39% vs state ZIP avg
$58,270
Per Capita Income
5.3%
Poverty Rate
0.0%
Unemployment Rate
How ZIP 57239 ranks among South Dakota ZIPs
Grenville, 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)
$106,389 Top 8% higher than 92% 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
475housing units
475
Total Housing Units
186
Occupied Units
289
Vacant Units
1.92
Avg Household Size
Occupancy Type
$377,300
Median Home Value
+97% vs state ZIP avg
1975
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 9 business establishments in ZIP 57239, employing approximately 37 people with a combined annual payroll of $1,191,000.
9
Businesses
37
Employees
$1.2M
Annual Payroll
1
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Accommodation and food services | 3 | 33.3% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 57239 vs 57232 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 57232 | Eden, SD | 299 | 8.3 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 57239, 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 Day County
Related Areas
Frequently Asked Questions
What county is ZIP code 57239 in?
ZIP code 57239 (Grenville) is located in Day County, South Dakota. Day County contains multiple ZIP codes, see the full list at /counties/day-sd.
What is the population of ZIP code 57239?
ZIP code 57239 in Grenville, SD has a population of 223 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 57239?
The median household income in ZIP 57239 is $106,389, which is 39% above the national average of $76,288.
What is the average home value in ZIP 57239?
The median home value in ZIP 57239 is $377,300, which is 36% above the national average of $278,155.
What is the demographic makeup of ZIP 57239?
The largest racial group in ZIP 57239 is White at 96.4%. Hispanic or Latino residents make up 0.8% of the population.
How many businesses are in ZIP code 57239?
ZIP code 57239 has 9 business establishments employing approximately 37 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 57239?
In ZIP code 57239, 74.6% of residents aged 25+ have a high school diploma or higher, and 34.9% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 57239?
In ZIP code 57239, approximately 88.7% of occupied housing units are owner-occupied and 11.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 57239?
The poverty rate in ZIP code 57239 is 5.3% 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 57239's numbers, next.
- See how ZIP 57239 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Grenville, 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.