ZipCodesToGo
South Dakota ZIP Codes
Hutchinson County
Dimock, SD
57331
57331 ZIP Code — Dimock, SD
Hutchinson County, South Dakota
ZIP code 57331 is located in
Dimock ,
South Dakota ,
within Hutchinson County .
It covers approximately 68.33 square miles and serves a population of
237 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 605 .
About ZIP code 57331
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $204,200. Owner-occupancy sits near the national average at 73%.
Median household income is $102,500.
The dominant occupation class is sales and office, with agriculture and mining as the leading industry. The average commute of 21 minutes is near the national average.
College attainment at 5% is below the national average, consistent with a trades and production-oriented local economy.
Notable community characteristics include a notable veteran presence at 14% of civilians, above the national average of 7%.
Overall, ZIP code 57331 reflects a community defined by a trades-oriented workforce and a strong veteran community.
57331 ZIP code map
View map of 57331
Cities in ZIP code 57331
Below are the cities the US Postal Service accepts for ZIP code 57331. Using any city not on this list may result in mail delivery delays.
Nearby ZIP codes
Demographics
updated 08/2026
Population
Total population
237
Population density
3 / sq mi
State FIPS
46
County FIPS
067
Geography
Land area
68.33 sq mi
Water area
0.01 sq mi
Latitude
43.4632
Longitude
-98.0456
Timezone
Central (CT)
Area code
605
Economics
updated 08/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
33.6%
39.5%
41.7%
$50k – $100k
36.9%
40.7%
33.8%
$100k – $200k
29.5%
17.4%
20.1%
Over $200k
0.0%
2.4%
4.4%
Demographics & statistics
$102,500
Median household income
$204,200
Median home value
Age distribution
Age summary
Group Count % Under 18 33 13.9% 18 and over 204 86.1% 65 and over 42 17.7% Median age 51.8 years
Race & ethnicity
Household income
Income range
This ZIP
County avg
State avg
Under $50k
33.6%
39.5%
41.7%
$50k – $100k
36.9%
40.7%
33.8%
$100k – $200k
29.5%
17.4%
20.1%
Over $200k
0.0%
2.4%
4.4%
Range % of households Under $10k 15.2% $10k–$15k 0.9% $15k–$25k 0.9% $25k–$35k 6.3% $35k–$50k 10.7% $50k–$75k 3.6% $75k–$100k 10.7% $100k–$150k 27.7% $150k–$200k 16.1% $200k+ 8.0% Median income $102,500
Housing
Housing overview
Metric Value Median home value $204,200 Median rent / month $179 Owner occupied 73.2% Renter occupied 26.8% Vacant 8.2% Single-family detached 91.8% Large apartment buildings 0.0% Mobile homes 5.7% Median rooms 6.9 Avg household size (owned) 2.23
Year built
Era % 2020 or later 0.0% 2010–2019 18.0% 2000–2009 27.9% 1990–1999 0.0% 1980–1989 6.6% 1970–1979 8.2% 1960–1969 4.9% 1950–1959 5.7% 1940–1949 1.6% 1939 or earlier 27.0%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 2.5% 2 bedrooms 32.8% 3 bedrooms 32.8% 4 bedrooms 16.4% 5+ bedrooms 15.6%
Vehicles per household
Vehicles % of households No vehicle 2.7% 1 vehicle 29.5% 2 vehicles 16.1% 3 or more 51.8%
Heating fuel
Fuel type % Utility gas 36.6% Electricity 37.5% Propane / LP gas 25.0% Fuel oil 0.9%
Households & families
Household type Count % Married-couple family 73 65.2% Cohabiting couple 4 3.6% Male householder, no spouse 19 17.0% Female householder, no spouse 16 14.3% Households with children under 18 16 14.3% Households with seniors (65+) 27 24.1% Average household size 2.12
Marital status
Status Male Female Never married 20.2% 0.0% Married 71.6% 79.2% Separated 0.0% 0.0% Widowed 0.0% 14.6% Divorced 8.3% 6.3%
Education
Some college, no degree
11.4%
Graduate / professional
2.5%
Metric % HS diploma or higher 96.5% Bachelor's or higher 5.4%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 0 0.0% Kindergarten 3 15.0% Elementary school 16 80.0% High school 1 5.0% College / grad school 0 0.0%
Employment
Industry of employment
Agriculture & mining
22.7%
Transportation & utilities
15.3%
Education & healthcare
9.3%
Public administration
4.0%
Finance & real estate
3.3%
Professional & management
1.3%
Occupation
Category % Management, business & arts 36.0% Service 6.0% Sales & office 38.7% Natural resources & construction 2.0% Production & transportation 17.3%
Employment type
Type % Private sector 75.3% Government 16.7% Self-employed 8.0% Unpaid family workers 0.0%
Commute
Method % Drive alone 78.0% Carpool 4.5% Public transit 0.0% Walk 6.8% Work from home 10.6% Other means 0.0% Avg commute (minutes) 20.9
Poverty
Married-couple families
0.0%
Female-led households
0.0%
Income support
Source % of households Social Security 27.7% Retirement income 23.2% Supplemental Security 0.0% Cash public assistance 1.8% Food stamps / SNAP 0.9%
Health indicators
Condition % Obesity 32.6% High blood pressure 32.5% High cholesterol 31.3% Diabetes 9.5% Heart disease 7.4% Stroke 3.2% Asthma 8.6% Arthritis 24.9% Kidney disease 3.1% Pulmonary disease 6.3% Cancer 7.9%
Behavior / access % Smoking 18.0% Binge drinking 19.3% No physical activity 22.9% Less than 7 hrs sleep 28.2% Depression 14.8% Fair or poor health 11.5% Poor mental health 10.1% Poor physical health 9.0% No health insurance 11.9% Visited doctor (checkup) 75.4% Visited dentist 69.1% Cholesterol screening 90.2% Teeth loss 13.9%
Veterans & disability
Veterans Count % Civilian veterans 28 13.7%
Disability % Any disability 6.3% Under 18 6.1% 18–64 years 1.2% 65 and over 26.2%
Health insurance coverage
Type % Private insurance 81.9% Public insurance 26.2% No insurance 6.8% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 226 95.4% Spanish 0 0.0% Other Indo-European 0 0.0% Asian & Pacific Islander 0 0.0% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 237 100.0% Born in same state 233 98.3% Born in different state 214 90.3% Foreign born 4 1.7% Naturalized citizen 0 0.0% Not a US citizen 0 0.0%
Ancestry
Ancestry Count % Italian 19 8% Polish 8 3.4% Arab 3 1.3%
Ancestry Count % Irish 2 0.8% French 1 0.4%
Technology access
Metric % of households Computer access 47.3% Internet access 82.1%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 57331
What city is ZIP code 57331 in?
ZIP code 57331 is primarily assigned to Dimock, South Dakota.
What county is ZIP code 57331 in?
ZIP code 57331 falls within Hutchinson County, South Dakota.
How educated is the population of ZIP code 57331?
5% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.
Does ZIP code 57331 have a large veteran population?
14% of civilians in ZIP code 57331 are veterans, above the national average of ~7%.
What is the median household income in ZIP code 57331?
The median household income in ZIP code 57331 is $102,500, above the national median of ~$75,000.
What is the population of ZIP code 57331?
ZIP code 57331 has an estimated population of 237 residents, with a density of 3 people per square mile.
What timezone is ZIP code 57331 in?
ZIP code 57331 observes the CST timezone.
Need the complete ZIP code database?
Download all 42,000+ US ZIP codes — Excel, CSV, or Access. Includes lat/lng, county FIPS & timezone.
Download database →
