57772 ZIP Code — Porcupine, SD

Oglala Lakota County, South Dakota

ZIP code 57772 is located in Porcupine, South Dakota, within Oglala Lakota County. It covers approximately 502.56 square miles and serves a population of 1,381 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 605.

About ZIP code 57772

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1970s, giving the area an established character. Owner-occupancy sits near the national average at 70%.

Median household income is $20,703. Poverty affects 90% of residents, above the national average. SNAP benefit usage at 51% of households reflects economic stress in the area. 43% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is natural resources, construction, and trades, with education and healthcare as the leading industry.

College attainment at 5% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of obesity (46%), diabetes (17%), smoking (41%) compared to national benchmarks. 35% of residents lack health insurance, above the national average.

Overall, ZIP code 57772 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, a significant Social Security-dependent population, and elevated reliance on food assistance.

1,381

population

502.56

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

57772 ZIP code map

Cities in ZIP code 57772

Below are the cities the US Postal Service accepts for ZIP code 57772. Using any city not on this list may result in mail delivery delays.

City	Status
Porcupine	Acceptable
Porcupine	Preferred

Nearby ZIP codes

57752 Kyle (11.2 mi) 57794 Wounded Knee (11.9 mi) 57716 Batesland (12 mi) 57714 Allen (15.8 mi)

Demographics updated 06/2026

Population
Total population	1,381
Population density	3 / sq mi
State FIPS	46
County FIPS	102

Geography
Land area	502.56 sq mi
Water area	0.25 sq mi
Latitude	43.2896
Longitude	-102.2170
Timezone	Mountain (MT)
Area code	605

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	75.4%	66.6%	41.7%
$50k – $100k	19.8%	23.1%	33.8%
$100k – $200k	4.8%	7.0%	20.1%
Over $200k	0.0%	3.3%	4.4%

Demographics & statistics

1,381

Population

People per sq mi

26.2

Median age

$20,703

Median household income

$5,560

Per capita income

Median home value

Median monthly rent

70.2%

Home ownership

89.6%

Poverty rate

30.1%

Unemployment

384

Housing units

4.9%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

115

15–19

20–24

25–34

35–44

106

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	492	35.6%
18 and over	889	64.4%
65 and over	135	9.8%
Median age	26.2 years

Race & ethnicity

American Indian / Alaska Native 91.2%

Hispanic or Latino 3.4%

Other race 3.4%

White 2.1%

Group	Count	%
American Indian / Alaska Native	1,303	91.2%
Hispanic or Latino	48	3.4%
Other race	48	3.4%
White	30	2.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	75.4%	66.6%	41.7%
$50k – $100k	19.8%	23.1%	33.8%
$100k – $200k	4.8%	7.0%	20.1%
Over $200k	0.0%	3.3%	4.4%

Under $10k 24.0%

$10k–$15k 15.2%

$15k–$25k 21.3%

$25k–$35k 21.0%

$35k–$50k 6.4%

$50k–$75k 12.2%

Range	% of households
Under $10k	24.0%
$10k–$15k	15.2%
$15k–$25k	21.3%
$25k–$35k	21.0%
$35k–$50k	6.4%
$50k–$75k	12.2%
Median income	$20,703

Housing

Home values

Under $50k 53.7%

$50k–$100k 30.3%

$100k–$150k 10.0%

$150k–$200k 3.9%

$200k–$300k 0.4%

$500k–$1M 1.7%

Housing overview

Metric	Value
Median home value	$0
Median rent / month	$0
Owner occupied	70.2%
Renter occupied	29.8%
Vacant	31.7%
Single-family detached	60.4%
Large apartment buildings	0.0%
Mobile homes	31.7%
Median rooms	5.1
Avg household size (owned)	2.53

Year built

Era	%
2020 or later	0.0%
2010–2019	1.7%
2000–2009	7.3%
1990–1999	26.6%
1980–1989	22.4%
1970–1979	36.9%
1960–1969	0.0%
1950–1959	0.0%
1940–1949	0.0%
1939 or earlier	5.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	3.7%
2 bedrooms	30.1%
3 bedrooms	21.8%
4 bedrooms	42.7%
5+ bedrooms	1.7%

Vehicles per household

Vehicles	% of households
No vehicle	29.5%
1 vehicle	37.1%
2 vehicles	32.2%
3 or more	1.2%

Heating fuel

Fuel type	%
Electricity	29.8%
Propane / LP gas	58.4%
Wood	11.9%

Households & families

Household type	Count	%
Married-couple family	95	28.9%
Cohabiting couple	26	7.9%
Male householder, no spouse	63	19.1%
Female householder, no spouse	145	44.1%
Households with children under 18	210	63.8%
Households with seniors (65+)	124	37.7%
Average household size	4.11

Marital status

Status	Male	Female
Never married	74.7%	56.8%
Married	19.0%	12.8%
Separated	0.0%	0.0%
Widowed	0.0%	15.7%
Divorced	6.2%	14.7%

Education

Less than 9th grade 7.2%

Some HS, no diploma 33.1%

HS graduate 28.4%

Some college, no degree 18.6%

Associate's degree 7.8%

Bachelor's degree 4.0%

Graduate / professional 0.9%

Metric	%
HS diploma or higher	59.7%
Bachelor's or higher	4.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	33	7.0%
Elementary school	220	46.7%
High school	149	31.6%
College / grad school	69	14.6%

Employment

Industry of employment

Education & healthcare 35.1%

Wholesale trade 28.1%

Other services 18.4%

Finance & real estate 14.9%

Professional & management 3.5%

Occupation

Category	%
Management, business & arts	27.2%
Service	0.0%
Sales & office	3.5%
Natural resources & construction	41.2%
Production & transportation	28.1%

Employment type

Type	%
Private sector	8.8%
Government	72.8%
Self-employed	18.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	21.8%
Carpool	43.6%
Public transit	15.5%
Walk	19.1%
Work from home	0.0%
Other means	0.0%
Avg commute (minutes)	0.0

Poverty

All people 89.6%

Under 18 years 98.5%

18 and over 84.7%

Married-couple families 45.3%

Female-led households 100.0%

Income support

Source	% of households
Social Security	43.2%
Retirement income	8.2%
Supplemental Security	16.1%
Cash public assistance	16.4%
Food stamps / SNAP	50.5%

Health indicators

Condition	%
Obesity	45.6%
High blood pressure	34.4%
High cholesterol	26.1%
Diabetes	17.3%
Heart disease	9.3%
Stroke	6.3%
Asthma	14.9%
Arthritis	25.7%
Kidney disease	4.7%
Pulmonary disease	11.7%
Cancer	4.6%

Behavior / access	%
Smoking	40.7%
Binge drinking	18.9%
No physical activity	38.4%
Less than 7 hrs sleep	35.1%
Depression	19.6%
Fair or poor health	29.3%
Poor mental health	19.5%
Poor physical health	18.4%
No health insurance	19.0%
Visited doctor (checkup)	74.2%
Visited dentist	43.6%
Cholesterol screening	79.4%
Teeth loss	41.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	52	5.8%

Disability	%
Any disability	12.7%
Under 18	4.7%
18–64 years	16.0%
65 and over	23.7%

Health insurance coverage

Type	%
Private insurance	4.9%
Public insurance	60.8%
No insurance	34.5%
Uninsured under 19	7.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,283	92.9%
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)	1,381	100.0%
Born in same state	1,381	100.0%
Born in different state	1,253	90.7%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
English	4	0.3%

Technology access

Metric	% of households
Computer access	23.8%
Internet access	76.6%

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

Frequently asked questions about ZIP code 57772

What city is ZIP code 57772 in?

ZIP code 57772 is primarily assigned to Porcupine, South Dakota.

What county is ZIP code 57772 in?

ZIP code 57772 falls within Oglala Lakota County, South Dakota.

What is the poverty rate in ZIP code 57772?

90% of residents in ZIP code 57772 live below the poverty line, above the national average.

Is ZIP code 57772 family-oriented?

36% of residents in ZIP code 57772 are under 18, reflecting a younger, family-oriented community.

How educated is the population of ZIP code 57772?

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 57772 have a large retiree population?

43% of households in ZIP code 57772 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 57772 in?

ZIP code 57772 observes the MST timezone.