58521 ZIP Code — Baldwin, ND

Burleigh County, North Dakota

ZIP code 58521 is located in Baldwin, North Dakota, within Burleigh County. It covers approximately 166.02 square miles and serves a population of 705 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 701.

About ZIP code 58521

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1980s, giving the area an established character. Median home value is $398,000. Owner-occupancy is high at 91%, well above the national average.

Median household income is $128,048. 63% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is sales and office, with professional and management as the leading industry. The average commute of 34 minutes is near the national average.

Educational attainment is near the national average, with 43% of residents holding a bachelor's degree or higher.

Overall, ZIP code 58521 reflects a community defined by high homeownership and a significant Social Security-dependent population.

705

population

166.02

sq mi land

Standard

ZIP type

Central (CT)

timezone

58521 ZIP code map

Cities in ZIP code 58521

Below are the cities the US Postal Service accepts for ZIP code 58521. Using any city not on this list may result in mail delivery delays.

City	Status
Baldwin	Preferred

Nearby ZIP codes

58503 Bismarck (8.5 mi) 58579 Wilton (11.1 mi) 58501 Bismarck (14.1 mi) 58505 Bismarck (14.8 mi) 58558 Menoken (16.8 mi)

Demographics updated 05/2026

Population
Total population	705
Population density	4 / sq mi
State FIPS	38
County FIPS	015

Geography
Land area	166.02 sq mi
Water area	1.16 sq mi
Latitude	47.0263
Longitude	-100.6970
Timezone	Central (CT)
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	15.2%	32.1%	37.8%
$50k – $100k	42.9%	33.7%	32.8%
$100k – $200k	29.5%	27.4%	23.3%
Over $200k	12.4%	6.8%	6.0%

Demographics & statistics

705

Population

People per sq mi

55.1

Median age

$128,048

Median household income

$56,473

Per capita income

$398,000

Median home value

Median monthly rent

91.3%

Home ownership

1.6%

Poverty rate

1.6%

Unemployment

324

Housing units

42.5%

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	84	11.9%
18 and over	621	88.1%
65 and over	195	27.7%
Median age	55.1 years

Race & ethnicity

White 87.8%

Hispanic or Latino 5.4%

Other race 3.9%

Two or more races 2.3%

American Indian / Alaska Native 0.7%

Group	Count	%
White	654	87.8%
Hispanic or Latino	40	5.4%
Other race	29	3.9%
Two or more races	17	2.3%
American Indian / Alaska Native	5	0.7%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	15.2%	32.1%	37.8%
$50k – $100k	42.9%	33.7%	32.8%
$100k – $200k	29.5%	27.4%	23.3%
Over $200k	12.4%	6.8%	6.0%

Under $10k 0.3%

$15k–$25k 1.0%

$25k–$35k 5.2%

$35k–$50k 6.5%

$50k–$75k 21.4%

$75k–$100k 6.5%

$100k–$150k 34.6%

$150k–$200k 3.9%

$200k+ 20.7%

Range	% of households
Under $10k	0.3%
$15k–$25k	1.0%
$25k–$35k	5.2%
$35k–$50k	6.5%
$50k–$75k	21.4%
$75k–$100k	6.5%
$100k–$150k	34.6%
$150k–$200k	3.9%
$200k+	20.7%
Median income	$128,048

Housing

Home values

Under $50k 0.4%

$50k–$100k 5.3%

$100k–$150k 2.1%

$150k–$200k 2.1%

$200k–$300k 5.0%

$300k–$500k 45.4%

$500k–$1M 27.0%

$1M+ 12.8%

Housing overview

Metric	Value
Median home value	$398,000
Median rent / month	$0
Owner occupied	91.3%
Renter occupied	8.7%
Vacant	12.0%
Single-family detached	93.2%
Large apartment buildings	0.0%
Mobile homes	6.8%
Median rooms	8.5
Avg household size (owned)	2.36

Year built

Era	%
2020 or later	0.0%
2010–2019	16.2%
2000–2009	7.7%
1990–1999	2.8%
1980–1989	31.3%
1970–1979	23.1%
1960–1969	0.9%
1950–1959	3.1%
1940–1949	2.0%
1939 or earlier	12.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.3%
1 bedroom	2.8%
2 bedrooms	12.3%
3 bedrooms	33.0%
4 bedrooms	12.8%
5+ bedrooms	38.7%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	10.4%
2 vehicles	20.7%
3 or more	68.9%

Heating fuel

Fuel type	%
Utility gas	0.3%
Electricity	18.4%
Propane / LP gas	51.5%
Wood	29.1%

Households & families

Household type	Count	%
Married-couple family	246	79.6%
Cohabiting couple	3	1.0%
Male householder, no spouse	36	11.7%
Female householder, no spouse	24	7.8%
Households with children under 18	41	13.3%
Households with seniors (65+)	175	56.6%
Average household size	2.28

Marital status

Status	Male	Female
Never married	31.9%	16.1%
Married	60.6%	72.3%
Separated	0.0%	0.0%
Widowed	5.9%	4.5%
Divorced	1.6%	7.1%

Education

Less than 9th grade 0.0%

Some HS, no diploma 3.3%

HS graduate 31.7%

Some college, no degree 12.0%

Associate's degree 10.6%

Bachelor's degree 38.4%

Graduate / professional 4.1%

Metric	%
HS diploma or higher	96.7%
Bachelor's or higher	42.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	4	4.1%
Elementary school	38	38.8%
High school	36	36.7%
College / grad school	20	20.4%

Employment

Industry of employment

Professional & management 36.0%

Agriculture & mining 14.7%

Retail trade 11.9%

Education & healthcare 11.9%

Finance & real estate 9.5%

Public administration 3.7%

Wholesale trade 3.5%

Construction 2.3%

Arts, food & hospitality 2.1%

Transportation & utilities 1.9%

Manufacturing 1.6%

Other services 0.9%

Occupation

Category	%
Management, business & arts	28.6%
Service	9.5%
Sales & office	40.9%
Natural resources & construction	9.8%
Production & transportation	11.2%

Employment type

Type	%
Private sector	77.2%
Government	10.7%
Self-employed	11.6%
Unpaid family workers	0.5%

Commute

Method	%
Drive alone	67.0%
Carpool	10.9%
Public transit	1.4%
Walk	0.0%
Work from home	17.9%
Other means	2.8%
Avg commute (minutes)	33.5

Poverty

All people 1.6%

Under 18 years 0.0%

18 and over 1.8%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	63.4%
Retirement income	19.4%
Supplemental Security	1.0%
Cash public assistance	1.6%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	33.2%
High blood pressure	32.9%
High cholesterol	34.1%
Diabetes	9.5%
Heart disease	6.7%
Stroke	2.9%
Asthma	9.1%
Arthritis	25.2%
Kidney disease	2.8%
Pulmonary disease	6.3%
Cancer	7.4%

Behavior / access	%
Smoking	17.0%
Binge drinking	20.6%
No physical activity	22.5%
Less than 7 hrs sleep	27.4%
Depression	19.1%
Fair or poor health	11.7%
Poor mental health	11.6%
Poor physical health	8.8%
No health insurance	9.0%
Visited doctor (checkup)	70.6%
Visited dentist	69.9%
Cholesterol screening	90.6%
Teeth loss	10.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	43	6.9%

Disability	%
Any disability	11.5%
Under 18	0.0%
18–64 years	4.7%
65 and over	31.3%

Health insurance coverage

Type	%
Private insurance	85.4%
Public insurance	32.2%
No insurance	2.7%
Uninsured under 19	4.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	694	98.4%
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)	699	99.1%
Born in same state	699	99.1%
Born in different state	450	63.8%
Foreign born	0	0.0%
Naturalized citizen	6	0.9%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	41	5.8%
Polish	40	5.7%

Ancestry	Count	%
French	32	4.5%
English	5	0.7%

Technology access

Metric	% of households
Computer access	43.8%
Internet access	96.8%

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

Frequently asked questions about ZIP code 58521

What city is ZIP code 58521 in?

ZIP code 58521 is primarily assigned to Baldwin, North Dakota.

What county is ZIP code 58521 in?

ZIP code 58521 falls within Burleigh County, North Dakota.

Does ZIP code 58521 have a large retiree population?

63% of households in ZIP code 58521 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 58521 have an older population?

28% of residents in ZIP code 58521 are 65 or older, above the national average of ~17%.

Is ZIP code 58521 mostly owner-occupied?

91% of occupied units in ZIP code 58521 are owner-occupied, well above the national average.

What is the median household income in ZIP code 58521?

The median household income in ZIP code 58521 is $128,048, above the national median of ~$75,000.

What timezone is ZIP code 58521 in?

ZIP code 58521 observes the CST timezone.