Postal Codes

57366 ZIP Code

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ZIP code 57366 covers Parkston, South Dakota, with a population of about 2,619 and a median household income of $75,750.

Population
2,61912 per square mile
Median age
39.1about the US average
Median household income
$75,750about the South Dakota median
Poverty rate
7.7%4.7 points below the US average
Typical home value
$243,783up 20.2% in five years
Median rent
$74818% below the South Dakota median
Degree or higher
22.3%12.7 points below the US average
Homeownership
75.6%10.6 points above the US average
Time zone
Central UTC-06:00observes daylight saving time
Businesses
84

Where 57366 is

Parkston, South Dakota — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population2,619
Median age39.1
Family households63.5%
Born outside the US0.8%
Speaks a language other than English at home3.8%
White (non-Hispanic)94.7%
Black (non-Hispanic)0%
Asian (non-Hispanic)0%
Hispanic or Latino1.9%
Veterans3.7%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$75,750
Income per person$40,779
Poverty rate7.7%
Households on SNAP or cash assistance4.4%

Household income distribution

Under $10k0.9%
$10–15k3.7%
$15–20k3.6%
$20–25k2.4%
$25–30k0.6%
$30–35k1.8%
$35–40k2.7%
$40–45k3.7%
$45–50k5.4%
$50–60k11.3%
$60–75k13.4%
$75–100k11.0%
$100–125k18.0%
$125–150k8.3%
$150–200k5.0%
$200k or more8.3%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed1,090
Mean adjusted gross income$82,430
Returns declaring $200,000 or more7.3%
Returns, under $25k24.8%
Returns, $25k–$50k22.0%
Returns, $50k–$75k15.6%
Returns, $75k–$100k10.1%
Returns, $100k–$200k20.2%
Returns, $200k or more7.3%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$173,400
Median gross rent$748
Rent as a share of household income21.7%
Owner-occupied75.6%
Vacant homes7.6%
Median year built1965

What the homes are

Detached house85.1%
Attached house0.7%
2 to 4 units0.6%
5 to 19 units13.5%
20 or more units0.1%
Mobile home0.1%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$243,783as of 2026-07
Typical home value, 1 yearup 6.7%
Typical home value, 5 yearsup 20.2%
Typical home value, 10 yearsup 77.8%
Typical home value since 2000
201620212026$243,783$137,073

$137,073 in 2016 to $243,783 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate2.1%
Bachelor's degree or higher22.3%
High school diploma or higher94.1%
Works from home3%
Drives to work alone86.4%
Takes public transport0%
Commutes 45 minutes or more7.9%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity34.3% 0.9 pts above the national average of 33.4%
Diagnosed diabetes12.3% same as the national average of 12%
Currently smokes15.1% 1.9 pts above the national average of 13.2%
High blood pressure36% 1.9 pts above the national average of 34.1%
Fair or poor general health17.7% 2.6 pts below the national average of 20.3%
No health insurance (18–64)7.9% 3.4 pts below the national average of 11.3%
Depression20.3% 1.6 pts below the national average of 21.9%
No leisure-time physical activity24.9% 0.5 pts below the national average of 25.4%
Arthritis29.5% 4.4 pts above the national average of 25.1%
Binge drinking17.1% 1.1 pts above the national average of 16%
Taking blood pressure medication79.3% 4.6 pts above the national average of 74.7%
Cancer (non-skin)11.2% 3.5 pts above the national average of 7.7%
Current asthma10% same as the national average of 10.4%
Coronary heart disease8.1% 1.9 pts above the national average of 6.2%
Routine check-up in past year77.4% 0.7 pts above the national average of 76.7%
Cholesterol screening86.8% 0.9 pts above the national average of 85.9%
Cognitive disability13.1% 1.7 pts below the national average of 14.8%
Colorectal screening65.7% 1.4 pts above the national average of 64.3%
COPD7.7% 1.1 pts above the national average of 6.6%
Visited a dentist68% 6.7 pts above the national average of 61.3%
Any disability31.3% 0.6 pts above the national average of 30.7%
Hearing disability9.9% 3.2 pts above the national average of 6.7%
High cholesterol35.7% 0.5 pts below the national average of 36.2%
Independent living disability8.1% same as the national average of 8.4%
Mammography use78.7% 2.8 pts above the national average of 75.9%
Poor mental health (14+ days)14.4% 2.4 pts below the national average of 16.8%
Mobility disability14.7% 0.7 pts above the national average of 14%
Poor physical health (14+ days)13.1% same as the national average of 13.5%
Self-care disability3.8% same as the national average of 4%
Sleeps under 7 hours29.2% 7.2 pts below the national average of 36.4%
Stroke4.1% 0.7 pts above the national average of 3.4%
All natural teeth lost17.1% 4.1 pts above the national average of 13%
Vision disability4.8% 0.8 pts below the national average of 5.6%
Business and employment

Census ZIP Code Business Patterns 2022

Business establishments84
People employed848
Annual payroll$43,314,000
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Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 94.3% of US census tracts
FEMA ratingRelatively High to Very High across the 4 census tracts this ZIP code covers
Expected annual loss95.9 out of 100
Community resilience86.2 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Drought99.4Very High at its worst in this ZIP code
Winter weather99Very High at its worst in this ZIP code
Cold wave97.7Very High at its worst in this ZIP code
Tornado97.7Very High at its worst in this ZIP code
Ice storm97.1Very High at its worst in this ZIP code
Hail96.3Very High at its worst in this ZIP code
Strong wind95.9Very High at its worst in this ZIP code
Wildfire92.3Relatively Moderate at its worst in this ZIP code
River flooding87.5Very High at its worst in this ZIP code
Landslide80.7Relatively Low at its worst in this ZIP code
Lightning65.5Relatively Moderate at its worst in this ZIP code
Heat wave46.2Relatively Low at its worst in this ZIP code
Earthquake41.8Relatively Low at its worst in this ZIP code
Compared with South Dakota and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPSouth DakotaUnited States
Median household income$75,750$72,421$78,538
Income per person$40,779$38,880$43,289
Poverty rate7.7%12%12.4%
Median home value$173,400$236,800$303,400
Median gross rent$748$912$1,348
Homeownership75.6%68.6%65%
Bachelor's degree or higher22.3%31.1%35%
Unemployment rate2.1%3%5.2%
Works from home3%9.3%13.5%
Born outside the US0.8%3.9%13.9%
Median age39.137.738.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationALEXANDRIA, SD US31.3 km away
Rain in a year25 in
Snow in a year36 in

Average high and low by month

January25.3°F / 5.8°F0.47 in rain, 6.1 in snow
February31°F / 9.6°F0.74 in rain, 8 in snow
March43.8°F / 20.7°F1.13 in rain, 5.2 in snow
April57.6°F / 31.9°F2.88 in rain, 4.7 in snow
May69.4°F / 44.4°F3.64 in rain
June79.3°F / 55.6°F3.97 in rain
July84.2°F / 60°F3.13 in rain
August81.8°F / 57.4°F3.02 in rain
September75.1°F / 48.6°F2.81 in rain
October60°F / 34.7°F2.01 in rain, 0.9 in snow
November43.2°F / 21.4°F0.92 in rain, 3.2 in snow
December29.2°F / 10.3°F0.6 in rain, 8.2 in snow
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarketNone of this ZIP code
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 4 school districts, so the address decides which one, not the ZIP code.

Parkston School District 33-390.2% of this ZIP code's land area
Tripp-Delmont School District 33-55.1% of this ZIP code's land area
Corsica-Stickney School District 21-33% of this ZIP code's land area
Bridgewater-Emery School District 30-31.5% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability35more vulnerable than 35% of US census tracts
Socioeconomic status22more vulnerable than 22% of US census tracts
Household characteristics60more vulnerable than 60% of US census tracts
Racial and ethnic minority status8more vulnerable than 8% of US census tracts
Housing type and transport56more vulnerable than 56% of US census tracts
Walkability6 out of 20Below average
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

57331 Dimock, SD8.5 km away
57334 Ethan, SD16.8 km away
57376 Tripp, SD17.5 km away
57354 Kaylor, SD18.5 km away
57330 Delmont, SD22 km away
57052 Olivet, SD23.3 km away
57328 Corsica, SD31.5 km away
57313 Armour, SD31.5 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Hutchinson County88.9% of this ZIP code's land area
Douglas County11.1% of this ZIP code's land area
Time zoneCentral (UTC-06:00 standard)
Daylight saving timeObserved
Land area217.99 sq mi
Water area0.26 sq mi
Population density12 people per sq mi
Latitude, longitude43.3978, -97.9678

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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