57251 ZIP Code — Marvin, SD

Grant County, South Dakota

ZIP code 57251 is located in Marvin, South Dakota, within Grant County. It covers approximately 47.81 square miles and serves a population of 191 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 605.

191
population
47.81
sq mi land
Standard
ZIP type
Central (CT)
timezone
57251 ZIP code map
Cities in ZIP code 57251

Below are the cities the US Postal Service accepts for ZIP code 57251. Using any city not on this list may result in mail delivery delays.

City Status
Marvin Preferred
Nearby ZIP codes
57266 Summit (7 mi) 57269 Twin Brooks (7.7 mi) 57279 Wilmot (10.4 mi) 57263 South Shore (10.7 mi) 57264 Stockholm (13.9 mi) 57257 Peever (14.8 mi) 57227 Corona (15.2 mi) 57273 Waubay (17 mi) 57252 Milbank (17.6 mi) 56278 Ortonville (20 mi)
Demographics updated 05/2026
Population
Total population 191
Population density 4 / sq mi
State FIPS 46
County FIPS 051
Geography
Land area 47.81 sq mi
Water area 0.81 sq mi
Latitude 45.2831
Longitude -96.9486
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 32.6% 39.8% 41.7%
$50k – $100k 54.3% 38.4% 33.8%
$100k – $200k 13.0% 15.9% 20.1%
Over $200k 0.0% 5.9% 4.4%

Demographics & statistics

191
Population
4
People per sq mi
21.0
Median age
$74,750
Median household income
$19,793
Per capita income
$0
Median home value
$0
Median monthly rent
69.8%
Home ownership
37.0%
Poverty rate
0.0%
Unemployment
48
Housing units
6.0%
Bachelor's or higher

Age distribution

Male Female
6
Under 5
2
29
5–9
9
10
15–19
3
36
20–24
12
12
25–34
4
13
35–44
4
11
45–54
4
8
55–59
3
8
60–64
3
8
65–74
3
2
75–84
1
← Male
Female →

Age summary

GroupCount%
Under 185729.8%
18 and over13470.2%
65 and over147.3%
Median age21.0 years

Race & ethnicity

White 68.6%
Asian 18.8%
American Indian / Alaska Native 5.8%
Black or African American 5.2%
Two or more races 1.6%
GroupCount%
White13168.6%
Asian3618.8%
American Indian / Alaska Native115.8%
Black or African American105.2%
Two or more races31.6%

Household income

Income range This ZIP County avg State avg
Under $50k 32.6% 39.8% 41.7%
$50k – $100k 54.3% 38.4% 33.8%
$100k – $200k 13.0% 15.9% 20.1%
Over $200k 0.0% 5.9% 4.4%
Under $10k 2.3%
$15k–$25k 4.7%
$25k–$35k 2.3%
$35k–$50k 16.3%
$50k–$75k 25.6%
$75k–$100k 23.3%
$100k–$150k 16.3%
$200k+ 9.3%
Range% of households
Under $10k2.3%
$15k–$25k4.7%
$25k–$35k2.3%
$35k–$50k16.3%
$50k–$75k25.6%
$75k–$100k23.3%
$100k–$150k16.3%
$200k+9.3%
Median income$74,750

Housing

Home values

Under $50k 36.7%
$50k–$100k 26.7%
$150k–$200k 23.3%
$500k–$1M 13.3%

Housing overview

MetricValue
Median home value$0
Median rent / month$0
Owner occupied69.8%
Renter occupied30.2%
Vacant29.5%
Single-family detached67.2%
Large apartment buildings0.0%
Mobile homes19.7%
Median rooms5.4
Avg household size (owned)1.93

Year built

Era%
2020 or later0.0%
2010–20196.6%
2000–20091.6%
1990–199911.5%
1980–19893.3%
1970–197921.3%
1960–196913.1%
1950–19598.2%
1940–19491.6%
1939 or earlier32.8%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom0.0%
2 bedrooms52.5%
3 bedrooms36.1%
4 bedrooms0.0%
5+ bedrooms11.5%

Vehicles per household

Vehicles% of households
No vehicle0.0%
1 vehicle4.7%
2 vehicles30.2%
3 or more65.1%

Heating fuel

Fuel type%
Electricity20.9%
Propane / LP gas51.2%
Fuel oil20.9%
Wood7.0%

Households & families

Household typeCount%
Married-couple family2455.8%
Cohabiting couple511.6%
Male householder, no spouse1432.6%
Female householder, no spouse00.0%
Households with children under 18614.0%
Households with seniors (65+)1125.6%
Average household size2.49

Marital status

StatusMaleFemale
Never married62.5%22.0%
Married23.1%51.2%
Separated4.8%0.0%
Widowed3.8%4.9%
Divorced5.8%22.0%

Education

Less than 9th grade 2.4%
Some HS, no diploma 6.0%
HS graduate 29.8%
Some college, no degree 21.4%
Associate's degree 34.5%
Bachelor's degree 2.4%
Graduate / professional 3.6%
Metric%
HS diploma or higher91.7%
Bachelor's or higher6.0%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool33.1%
Kindergarten00.0%
Elementary school3535.7%
High school2323.5%
College / grad school3737.8%

Employment

Industry of employment

Arts, food & hospitality 44.3%
Education & healthcare 23.6%
Agriculture & mining 11.3%
Construction 7.5%
Manufacturing 7.5%
Other services 3.8%
Retail trade 1.9%

Occupation

Category%
Management, business & arts28.3%
Service42.5%
Sales & office8.5%
Natural resources & construction12.3%
Production & transportation8.5%

Employment type

Type%
Private sector73.6%
Government18.9%
Self-employed7.5%
Unpaid family workers0.0%

Commute

Method%
Drive alone53.8%
Carpool7.5%
Public transit0.0%
Walk3.8%
Work from home34.9%
Other means0.0%
Avg commute (minutes)33.8

Poverty

All people 37.0%
Under 18 years 39.3%
18 and over 36.6%
Married-couple families 4.2%
Female-led households 0.0%

Income support

Source% of households
Social Security14.0%
Retirement income23.3%
Supplemental Security0.0%
Cash public assistance9.3%
Food stamps / SNAP9.3%

Health indicators

Condition%
Obesity34.8%
High blood pressure37.2%
High cholesterol34.2%
Diabetes11.3%
Heart disease9.3%
Stroke3.8%
Asthma8.4%
Arthritis29.2%
Kidney disease3.5%
Pulmonary disease7.2%
Cancer8.9%
Behavior / access%
Smoking17.0%
Binge drinking17.3%
No physical activity25.4%
Less than 7 hrs sleep26.9%
Depression13.9%
Fair or poor health12.6%
Poor mental health9.4%
Poor physical health9.8%
No health insurance11.5%
Visited doctor (checkup)78.3%
Visited dentist68.9%
Cholesterol screening91.7%
Teeth loss13.4%

Veterans & disability

VeteransCount%
Civilian veterans86.0%
Disability%
Any disability13.6%
Under 180.0%
18–64 years17.5%
65 and over35.7%

Health insurance coverage

Type%
Private insurance48.7%
Public insurance31.4%
No insurance26.7%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only18395.8%
Spanish7339.9%
Other Indo-European00.0%
Asian & Pacific Islander2714.8%
Other languages4625.1%

Place of birth & citizenship

OriginCount%
Native born (US)14374.9%
Born in same state14374.9%
Born in different state9348.7%
Foreign born00.0%
Naturalized citizen4825.1%
Not a US citizen3675.0%

Ancestry

AncestryCount%
French178.9%
Dutch105.2%
AncestryCount%
Italian94.7%
Polish63.1%

Technology access

Metric% of households
Computer access22.5%
Internet access86.0%

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

Frequently asked questions about ZIP code 57251

What city is ZIP code 57251 in?

ZIP code 57251 is primarily assigned to Marvin, South Dakota.

What county is ZIP code 57251 in?

ZIP code 57251 falls within Grant County, South Dakota.

Is Spanish widely spoken in ZIP code 57251?

Approximately 40% of households in ZIP code 57251 speak Spanish as a primary language.

What is the poverty rate in ZIP code 57251?

37% of residents in ZIP code 57251 live below the poverty line, above the national average.

How educated is the population of ZIP code 57251?

6% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the population of ZIP code 57251?

ZIP code 57251 has an estimated population of 191 residents, with a density of 4 people per square mile.

What timezone is ZIP code 57251 in?

ZIP code 57251 observes the CST timezone.

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