57533 ZIP Code — Gregory, SD

Gregory County, South Dakota

ZIP code 57533 is located in Gregory, South Dakota, within Gregory County. It covers approximately 376.88 square miles and serves a population of 1,697 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 605.

About ZIP code 57533

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $110,700. Owner-occupancy sits near the national average at 74%.

Median household income is $49,338. 38% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 17 minutes is near the national average.

College attainment at 20% is below the national average, consistent with a trades and production-oriented local economy.

1,697
population
376.88
sq mi land
Standard
ZIP type
Central (CT)
timezone
57533 ZIP code map
Cities in ZIP code 57533

Below are the cities the US Postal Service accepts for ZIP code 57533. Using any city not on this list may result in mail delivery delays.

City Status
Gregory Acceptable
Gregory Preferred
Nearby ZIP codes
57523 Burke (14.8 mi)
Demographics updated 05/2026
Population
Total population 1,697
Population density 5 / sq mi
State FIPS 46
County FIPS 053
Geography
Land area 376.88 sq mi
Water area 8.70 sq mi
Latitude 43.3869
Longitude -99.4526
Timezone Central (CT)
Area code 605
Total population by age
Gender
Race & ethnicity
Economics updated 05/2026
Household income
Income range This ZIP County avg State avg
Under $50k 55.5% 53.1% 41.7%
$50k – $100k 25.2% 30.6% 33.8%
$100k – $200k 17.2% 13.7% 20.1%
Over $200k 2.1% 2.6% 4.4%

Demographics & statistics

1,697
Population
5
People per sq mi
42.7
Median age
$49,338
Median household income
$31,099
Per capita income
$110,700
Median home value
$640
Median monthly rent
74.1%
Home ownership
9.5%
Poverty rate
2.5%
Unemployment
727
Housing units
20.4%
Bachelor's or higher

Age distribution

Male Female
43
Under 5
47
49
5–9
52
53
10–14
56
88
15–19
94
21
20–24
23
72
25–34
76
105
35–44
112
79
45–54
84
51
55–59
54
59
60–64
63
117
65–74
125
46
75–84
50
38
85+
40
← Male
Female →

Age summary

GroupCount%
Under 1842224.9%
18 and over1,27575.1%
65 and over41624.5%
Median age42.7 years

Race & ethnicity

White 91.3%
Two or more races 5%
Black or African American 2.1%
American Indian / Alaska Native 1.4%
Hispanic or Latino 0.2%
GroupCount%
White1,55391.3%
Two or more races855%
Black or African American362.1%
American Indian / Alaska Native231.4%
Hispanic or Latino40.2%

Household income

Income range This ZIP County avg State avg
Under $50k 55.5% 53.1% 41.7%
$50k – $100k 25.2% 30.6% 33.8%
$100k – $200k 17.2% 13.7% 20.1%
Over $200k 2.1% 2.6% 4.4%
Under $10k 3.7%
$10k–$15k 6.1%
$15k–$25k 16.4%
$25k–$35k 8.9%
$35k–$50k 15.6%
$50k–$75k 11.6%
$75k–$100k 10.8%
$100k–$150k 11.4%
$150k–$200k 12.1%
$200k+ 3.4%
Range% of households
Under $10k3.7%
$10k–$15k6.1%
$15k–$25k16.4%
$25k–$35k8.9%
$35k–$50k15.6%
$50k–$75k11.6%
$75k–$100k10.8%
$100k–$150k11.4%
$150k–$200k12.1%
$200k+3.4%
Median income$49,338

Housing

Home values

Under $50k 28.4%
$50k–$100k 17.4%
$100k–$150k 18.8%
$150k–$200k 15.8%
$200k–$300k 13.6%
$300k–$500k 6.0%

Housing overview

MetricValue
Median home value$110,700
Median rent / month$640
Owner occupied74.1%
Renter occupied25.9%
Vacant25.2%
Single-family detached81.8%
Large apartment buildings0.7%
Mobile homes6.7%
Median rooms5.8
Avg household size (owned)2.58

Year built

Era%
2020 or later0.0%
2010–20194.3%
2000–20095.5%
1990–19995.4%
1980–19898.2%
1970–197912.0%
1960–196910.2%
1950–195912.3%
1940–194910.5%
1939 or earlier31.5%

Bedrooms

Size% of units
No bedroom (studio)1.3%
1 bedroom7.8%
2 bedrooms26.7%
3 bedrooms42.9%
4 bedrooms12.3%
5+ bedrooms9.0%

Vehicles per household

Vehicles% of households
No vehicle4.0%
1 vehicle30.1%
2 vehicles28.7%
3 or more37.2%

Heating fuel

Fuel type%
Utility gas1.2%
Electricity58.2%
Propane / LP gas29.8%
Fuel oil6.1%
Wood0.9%
No fuel used2.7%

Households & families

Household typeCount%
Married-couple family30645.3%
Cohabiting couple243.6%
Male householder, no spouse17025.2%
Female householder, no spouse17525.9%
Households with children under 1815523.0%
Households with seniors (65+)26138.7%
Average household size2.44

Marital status

StatusMaleFemale
Never married36.2%31.5%
Married50.8%47.7%
Separated0.4%0.8%
Widowed2.7%12.8%
Divorced9.8%7.2%

Education

Less than 9th grade 3.4%
Some HS, no diploma 9.6%
HS graduate 30.8%
Some college, no degree 23.9%
Associate's degree 11.9%
Bachelor's degree 12.0%
Graduate / professional 8.5%
Metric%
HS diploma or higher87.0%
Bachelor's or higher20.4%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool5813.3%
Kindergarten409.2%
Elementary school15134.7%
High school11526.4%
College / grad school7116.3%

Employment

Industry of employment

Education & healthcare 25.5%
Retail trade 16.4%
Transportation & utilities 9.4%
Agriculture & mining 9.1%
Arts, food & hospitality 8.1%
Professional & management 6.0%
Construction 5.8%
Manufacturing 5.3%
Other services 5.1%
Finance & real estate 4.8%
Public administration 2.8%
Wholesale trade 1.7%

Occupation

Category%
Management, business & arts37.5%
Service16.3%
Sales & office20.9%
Natural resources & construction7.6%
Production & transportation17.7%

Employment type

Type%
Private sector72.5%
Government12.6%
Self-employed14.5%
Unpaid family workers0.3%

Commute

Method%
Drive alone74.2%
Carpool10.0%
Public transit0.0%
Walk4.2%
Work from home8.2%
Other means3.3%
Avg commute (minutes)16.6

Poverty

All people 9.5%
Under 18 years 5.0%
18 and over 11.0%
Married-couple families 1.6%
Female-led households 39.5%

Income support

Source% of households
Social Security37.8%
Retirement income13.5%
Supplemental Security3.1%
Cash public assistance0.3%
Food stamps / SNAP4.4%

Health indicators

Condition%
Obesity35.2%
High blood pressure38.2%
High cholesterol34.9%
Diabetes12.1%
Heart disease9.9%
Stroke4.6%
Asthma9.2%
Arthritis30.3%
Kidney disease4.1%
Pulmonary disease8.5%
Cancer9.4%
Behavior / access%
Smoking18.7%
Binge drinking16.2%
No physical activity27.6%
Less than 7 hrs sleep27.9%
Depression15.1%
Fair or poor health15.2%
Poor mental health10.5%
Poor physical health11.2%
No health insurance12.5%
Visited doctor (checkup)77.5%
Visited dentist64.9%
Cholesterol screening90.2%
Teeth loss17.3%

Veterans & disability

VeteransCount%
Civilian veterans705.5%
Disability%
Any disability13.6%
Under 182.1%
18–64 years12.4%
65 and over29.5%

Health insurance coverage

Type%
Private insurance72.0%
Public insurance31.6%
No insurance8.6%
Uninsured under 192.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only1,60794.7%
Spanish00.0%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)1,66197.9%
Born in same state1,65197.3%
Born in different state1,33978.9%
Foreign born100.6%
Naturalized citizen362.1%
Not a US citizen3083.3%

Ancestry

AncestryCount%
Italian1398.2%
French1257.4%
Polish975.7%
Arab784.6%
AncestryCount%
English261.5%
Dutch221.3%
German40.2%

Technology access

Metric% of households
Computer access39.8%
Internet access89.3%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 57533

What city is ZIP code 57533 in?

ZIP code 57533 is primarily assigned to Gregory, South Dakota.

What county is ZIP code 57533 in?

ZIP code 57533 falls within Gregory County, South Dakota.

Does ZIP code 57533 have a large retiree population?

38% of households in ZIP code 57533 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 57533?

The median home value in ZIP code 57533 is $110,700.

What is the population of ZIP code 57533?

ZIP code 57533 has an estimated population of 1,697 residents, with a density of 5 people per square mile.

What is the median household income in ZIP code 57533?

The median household income in ZIP code 57533 is $49,338, below the national median of ~$75,000.

What timezone is ZIP code 57533 in?

ZIP code 57533 observes the CST timezone.

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