PlainZIP

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
$106,389
Median income
$377,300
Median home value
34.9%
Bachelor's or higher

The verdict

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 South Dakota average), while per-capita income is $58,270. Poverty here runs at 5.3%, with unemployment measured at 0.0%. Median home value sits at $377,300 (97% above the state average), median rent at - a month, and owner-occupancy at 88.7%.

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 -. Beyond these figures, 1 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Day County, letting you compare 57239 to its immediate surroundings rather than a national baseline alone.

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

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 57239?

63.2

Median Age

60.1%

Male

39.9%

Female

0.0%

Foreign-Born

White 96.4%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 2.8%
Hispanic or Latino 0.8%

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

$58,270

Per Capita Income

5.3%

Poverty Rate

0.0%

Unemployment Rate

How ZIP 57239 ranks nationally

Grenville, SD household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$106,389 Top 15% higher than 85% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). This entry sits in this band. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US 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?

High School Graduate or Higher 74.6%
Bachelor's Degree or Higher 34.9%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

475

Total Housing Units

186

Occupied Units

289

Vacant Units

1.92

Avg Household Size

Occupancy Type

Owner 88.7%
Renter 11.3%

$377,300

Median Home Value

+97% vs state

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

More ZIP Codes in Day County

57274 standard
Webster, SD
Pop: 2,813
57273 standard
Waubay, SD
Pop: 1,316
57219 standard
Bristol, SD
Pop: 567
57261 standard
Roslyn, SD
Pop: 321
57468 standard
Pierpont, SD
Pop: 247
57422 standard
Andover, SD
Pop: 235

Related Areas

Day County Grenville, SD South Dakota

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.

Read our methodology to see how this data is sourced, computed, and verified.