PlainZIP

Dimock, SD · standard

ZIP Code 57331

Davison County, South Dakota - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

459
2/sq mi
$101,406
Median income
$292,500
Median home value
16.3%
Bachelor's or higher

The verdict

Dimock pairs an upper-quartile household income with above-median home values, in a rural, homeowner-dominated area.

Top 18%
household income, US ZIPs
Top 35%
home value, US ZIPs
2
people per sq mi
75%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 57331 against every reporting US ZIP.

ZIP code 57331 is a sparsely populated ZIP (a standard USPS delivery area) in Dimock, Davison County, South Dakota, home to just 459 residents across 191.3 square miles, a density of 2 people per square mile, in the Chicago time zone.

ZIP 57331 lands in the middle-income range, with a median household income of $101,406 (32% above the South Dakota average), while per-capita income is $45,012. Local economic indicators show a 8.7% poverty rate alongside 0.0% unemployment. Median home value sits at $292,500 (52% above the state average), median rent at - a month, and owner-occupancy at 74.8%.

Educational attainment sits below the national norm: 16.3% of adults hold a bachelor's degree or higher, the median age is 46.9, and the average commute is -. A geography-based comparison follows: 2 ZIP codes within about 10 miles of 57331, plus 3 more within Davison County, give a clearer read than the national average 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 57331, Dimock, 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

459

Population

191.3

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 57331?

46.9

Median Age

48.5%

Male

51.5%

Female

0.0%

Foreign-Born

White 98.3%
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 1.7%
Hispanic or Latino 0.0%

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?

$101,406

Median Household Income

+32% vs state

$45,012

Per Capita Income

8.7%

Poverty Rate

0.0%

Unemployment Rate

How ZIP 57331 ranks nationally

Dimock, SD household income vs. every US ZIP code

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

$101,406 Top 18% higher than 82% 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 62.9%
Bachelor's Degree or Higher 16.3%

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

What does housing look like?

121

Total Housing Units

111

Occupied Units

10

Vacant Units

2.08

Avg Household Size

Occupancy Type

Owner 74.8%
Renter 25.2%

$292,500

Median Home Value

+52% vs state

1986

Median Year Built

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

What businesses operate in this ZIP?

Census Bureau data shows 6 business establishments in ZIP 57331, employing approximately 66 people with a combined annual payroll of $2,334,000.

6

Businesses

66

Employees

$2.3M

Annual Payroll

0

Industry Sectors

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 57331 vs 57334 →

ZIP 57331 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 57331 ranks #3 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 57331 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 57331 ranks the highest of 3 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
57334 Ethan, SD 895 5.5 mi
57366 Parkston, SD 2,228 7.8 mi

More ZIP Codes in Davison County

57301 standard
Mitchell, SD
Pop: 18,375
57363 standard
Mount Vernon, SD
Pop: 1,003
57334 standard
Ethan, SD
Pop: 895

Related Areas

Davison County Dimock, SD South Dakota

Frequently Asked Questions

What county is ZIP code 57331 in? ▼
ZIP code 57331 (Dimock) is located in Davison County, South Dakota. Davison County contains multiple ZIP codes, see the full list at /counties/davison-sd.
What is the population of ZIP code 57331? ▼
ZIP code 57331 in Dimock, SD has a population of 459 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 57331? ▼
The median household income in ZIP 57331 is $101,406, which is 33% above the national average of $76,288.
What is the average home value in ZIP 57331? ▼
The median home value in ZIP 57331 is $292,500, which is 5% above the national average of $278,155.
What is the demographic makeup of ZIP 57331? ▼
The largest racial group in ZIP 57331 is White at 98.3%.
How many businesses are in ZIP code 57331? ▼
ZIP code 57331 has 6 business establishments employing approximately 66 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 57331? ▼
In ZIP code 57331, 62.9% of residents aged 25+ have a high school diploma or higher, and 16.3% 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 57331? ▼
In ZIP code 57331, approximately 74.8% of occupied housing units are owner-occupied and 25.2% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 57331? ▼
The poverty rate in ZIP code 57331 is 8.7% 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.