58655 ZIP Code — South Heart, ND

Stark County, North Dakota

ZIP code 58655 is located in South Heart, North Dakota, within Stark County. It covers approximately 112.07 square miles and serves a population of 591 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 701.

About ZIP code 58655

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $284,400. Owner-occupancy is high at 89%, well above the national average.

Median household income is $115,139.

The dominant occupation class is management, business, and professional, with agriculture and mining as the leading industry. The average commute of 24 minutes is near the national average.

College attainment at 21% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (21%) compared to national benchmarks.

591

population

112.07

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

58655 ZIP code map

Cities in ZIP code 58655

Below are the cities the US Postal Service accepts for ZIP code 58655. Using any city not on this list may result in mail delivery delays.

City	Status
South Heart	Preferred

Nearby ZIP codes

58622 Belfield (10.5 mi) 58601 Dickinson (11.8 mi) 58645 Medora (19.3 mi)

Demographics updated 05/2026

Population
Total population	591
Population density	5 / sq mi
State FIPS	38
County FIPS	089

Geography
Land area	112.07 sq mi
Water area	0.25 sq mi
Latitude	46.7603
Longitude	-103.0419
Timezone	Mountain (MT)
Area code	701

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.3%	33.5%	37.8%
$50k – $100k	21.5%	31.6%	32.8%
$100k – $200k	48.7%	27.3%	23.3%
Over $200k	6.5%	7.7%	6.0%

Demographics & statistics

591

Population

People per sq mi

37.0

Median age

$115,139

Median household income

$45,805

Per capita income

$284,400

Median home value

$770

Median monthly rent

89.3%

Home ownership

0.7%

Poverty rate

0.0%

Unemployment

240

Housing units

20.7%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	187	31.6%
18 and over	404	68.4%
65 and over	93	15.7%
Median age	37.0 years

Race & ethnicity

White 75.1%

American Indian / Alaska Native 22.6%

Hispanic or Latino 1.2%

Two or more races 0.7%

Other race 0.5%

Group	Count	%
White	449	75.1%
American Indian / Alaska Native	135	22.6%
Hispanic or Latino	7	1.2%
Two or more races	4	0.7%
Other race	3	0.5%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.3%	33.5%	37.8%
$50k – $100k	21.5%	31.6%	32.8%
$100k – $200k	48.7%	27.3%	23.3%
Over $200k	6.5%	7.7%	6.0%

Under $10k 0.9%

$15k–$25k 3.0%

$25k–$35k 14.6%

$35k–$50k 7.3%

$50k–$75k 10.3%

$75k–$100k 10.3%

$100k–$150k 26.6%

$150k–$200k 18.9%

$200k+ 8.2%

Range	% of households
Under $10k	0.9%
$15k–$25k	3.0%
$25k–$35k	14.6%
$35k–$50k	7.3%
$50k–$75k	10.3%
$75k–$100k	10.3%
$100k–$150k	26.6%
$150k–$200k	18.9%
$200k+	8.2%
Median income	$115,139

Housing

Home values

Under $50k 0.5%

$50k–$100k 14.9%

$100k–$150k 4.8%

$150k–$200k 6.7%

$200k–$300k 25.5%

$300k–$500k 45.2%

$500k–$1M 2.4%

Housing overview

Metric	Value
Median home value	$284,400
Median rent / month	$770
Owner occupied	89.3%
Renter occupied	10.7%
Vacant	12.1%
Single-family detached	65.3%
Large apartment buildings	0.0%
Mobile homes	23.4%
Median rooms	7.0
Avg household size (owned)	2.28

Year built

Era	%
2020 or later	1.5%
2010–2019	6.8%
2000–2009	26.8%
1990–1999	0.0%
1980–1989	17.4%
1970–1979	10.6%
1960–1969	6.0%
1950–1959	9.8%
1940–1949	1.9%
1939 or earlier	19.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.1%
2 bedrooms	14.3%
3 bedrooms	40.8%
4 bedrooms	27.2%
5+ bedrooms	16.6%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	15.9%
2 vehicles	28.8%
3 or more	55.4%

Heating fuel

Fuel type	%
Utility gas	63.1%
Electricity	24.0%
Propane / LP gas	12.9%

Households & families

Household type	Count	%
Married-couple family	153	65.7%
Cohabiting couple	10	4.3%
Male householder, no spouse	26	11.2%
Female householder, no spouse	44	18.9%
Households with children under 18	74	31.8%
Households with seniors (65+)	73	31.3%
Average household size	2.54

Marital status

Status	Male	Female
Never married	7.4%	12.4%
Married	78.6%	61.2%
Separated	0.0%	0.0%
Widowed	3.7%	8.0%
Divorced	10.2%	18.4%

Education

Less than 9th grade 2.6%

Some HS, no diploma 7.8%

HS graduate 31.5%

Some college, no degree 33.9%

Associate's degree 3.6%

Bachelor's degree 19.9%

Graduate / professional 0.8%

Metric	%
HS diploma or higher	89.7%
Bachelor's or higher	20.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	11	7.8%
Kindergarten	0	0.0%
Elementary school	100	70.9%
High school	25	17.7%
College / grad school	5	3.5%

Employment

Industry of employment

Agriculture & mining 34.3%

Education & healthcare 27.5%

Retail trade 12.0%

Arts, food & hospitality 6.8%

Public administration 5.8%

Professional & management 4.9%

Construction 3.2%

Finance & real estate 1.9%

Transportation & utilities 1.6%

Other services 1.3%

Wholesale trade 0.3%

Information 0.3%

Occupation

Category	%
Management, business & arts	35.3%
Service	8.4%
Sales & office	25.2%
Natural resources & construction	11.0%
Production & transportation	20.1%

Employment type

Type	%
Private sector	76.4%
Government	18.8%
Self-employed	4.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	90.3%
Carpool	7.1%
Public transit	0.0%
Walk	2.3%
Work from home	0.3%
Other means	0.0%
Avg commute (minutes)	23.7

Poverty

All people 0.7%

Under 18 years 0.0%

18 and over 1.0%

Married-couple families 1.3%

Female-led households 0.0%

Income support

Source	% of households
Social Security	26.2%
Retirement income	6.9%
Supplemental Security	4.3%
Cash public assistance	2.1%
Food stamps / SNAP	2.1%

Health indicators

Condition	%
Obesity	28.5%
High blood pressure	35.4%
High cholesterol	34.2%
Diabetes	10.3%
Heart disease	7.3%
Stroke	3.3%
Asthma	9.3%
Arthritis	25.9%
Kidney disease	3.0%
Pulmonary disease	7.3%
Cancer	7.0%

Behavior / access	%
Smoking	21.0%
Binge drinking	20.6%
No physical activity	25.9%
Less than 7 hrs sleep	32.1%
Depression	19.2%
Fair or poor health	14.4%
Poor mental health	12.6%
Poor physical health	10.4%
No health insurance	11.2%
Visited doctor (checkup)	70.4%
Visited dentist	63.8%
Cholesterol screening	87.5%
Teeth loss	14.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	30	7.4%

Disability	%
Any disability	7.3%
Under 18	8.6%
18–64 years	2.3%
65 and over	21.5%

Health insurance coverage

Type	%
Private insurance	90.5%
Public insurance	18.3%
No insurance	3.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	527	89.2%
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)	591	100.0%
Born in same state	591	100.0%
Born in different state	460	77.8%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	115	19.5%
Polish	50	8.5%
Arab	48	8.1%

Ancestry	Count	%
Irish	11	1.9%
French	7	1.2%
English	6	1%

Technology access

Metric	% of households
Computer access	39.4%
Internet access	97.9%

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

Frequently asked questions about ZIP code 58655

What city is ZIP code 58655 in?

ZIP code 58655 is primarily assigned to South Heart, North Dakota.

What county is ZIP code 58655 in?

ZIP code 58655 falls within Stark County, North Dakota.

Is ZIP code 58655 family-oriented?

32% of residents in ZIP code 58655 are under 18, reflecting a younger, family-oriented community.

Is ZIP code 58655 mostly owner-occupied?

89% of occupied units in ZIP code 58655 are owner-occupied, well above the national average.

What is the median household income in ZIP code 58655?

The median household income in ZIP code 58655 is $115,139, above the national median of ~$75,000.

What is the population of ZIP code 58655?

ZIP code 58655 has an estimated population of 591 residents, with a density of 5 people per square mile.

What timezone is ZIP code 58655 in?

ZIP code 58655 observes the MST timezone.