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North Dakota ZIP Codes
Mclean County
Mercer, ND
58559
58559 ZIP Code — Mercer, ND
Mclean County, North Dakota
ZIP code 58559 is located in
Mercer ,
North Dakota ,
within Mclean County .
It covers approximately 173.29 square miles and serves a population of
364 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 701 .
About ZIP code 58559
The housing stock consists of predominantly single-family detached homes. Much of the housing stock is relatively new, reflecting recent development activity. Median home value is $245,000. Owner-occupancy is high at 87%, well above the national average.
Median household income is $108,250. The poverty rate of 7% is below the national average. 34% 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 28 minutes is near the national average.
Educational attainment is near the national average, with 34% of residents holding a bachelor's degree or higher.
Overall, ZIP code 58559 reflects a community defined by high homeownership and a significant Social Security-dependent population.
58559 ZIP code map
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Cities in ZIP code 58559
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Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
364
Population density
2 / sq mi
State FIPS
38
County FIPS
055
Geography
Land area
173.29 sq mi
Water area
6.15 sq mi
Latitude
47.5146
Longitude
-100.7478
Timezone
Central (CT)
Area code
701
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
20.0%
34.7%
37.8%
$50k – $100k
33.7%
34.7%
32.8%
$100k – $200k
44.2%
25.6%
23.3%
Over $200k
2.1%
5.1%
6.0%
Demographics & statistics
$108,250
Median household income
$245,000
Median home value
33.5%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 94 25.8% 18 and over 270 74.2% 65 and over 52 14.3% Median age 41.2 years
Race & ethnicity
Black or African American
2.2%
Group Count % White 352 96.7% Black or African American 8 2.2% Two or more races 4 1.1%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
20.0%
34.7%
37.8%
$50k – $100k
33.7%
34.7%
32.8%
$100k – $200k
44.2%
25.6%
23.3%
Over $200k
2.1%
5.1%
6.0%
Range % of households Under $10k 1.4% $10k–$15k 3.5% $35k–$50k 7.0% $50k–$75k 16.1% $75k–$100k 16.8% $100k–$150k 27.3% $150k–$200k 20.3% $200k+ 7.7% Median income $108,250
Housing
Housing overview
Metric Value Median home value $245,000 Median rent / month $0 Owner occupied 86.7% Renter occupied 13.3% Vacant 60.4% Single-family detached 77.6% Large apartment buildings 0.0% Mobile homes 22.4% Median rooms 5.7 Avg household size (owned) 2.47
Year built
Era % 2020 or later 1.7% 2010–2019 26.0% 2000–2009 9.1% 1990–1999 6.4% 1980–1989 4.4% 1970–1979 17.5% 1960–1969 3.6% 1950–1959 10.0% 1940–1949 10.8% 1939 or earlier 10.5%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 3.6% 2 bedrooms 27.7% 3 bedrooms 47.9% 4 bedrooms 12.7% 5+ bedrooms 8.0%
Vehicles per household
Vehicles % of households No vehicle 0.0% 1 vehicle 10.5% 2 vehicles 23.8% 3 or more 65.7%
Heating fuel
Fuel type % Utility gas 11.9% Electricity 21.7% Propane / LP gas 60.8%
Households & families
Household type Count % Married-couple family 108 75.5% Cohabiting couple 8 5.6% Male householder, no spouse 6 4.2% Female householder, no spouse 21 14.7% Households with children under 18 60 42.0% Households with seniors (65+) 32 22.4% Average household size 2.55
Marital status
Status Male Female Never married 3.9% 8.5% Married 85.3% 80.9% Separated 6.2% 0.0% Widowed 0.0% 0.0% Divorced 4.7% 10.6%
Education
Some college, no degree
20.4%
Graduate / professional
2.7%
Metric % HS diploma or higher 90.8% Bachelor's or higher 33.5%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 9 14.3% Kindergarten 0 0.0% Elementary school 42 66.7% High school 0 0.0% College / grad school 12 19.0%
Employment
Industry of employment
Education & healthcare
29.6%
Agriculture & mining
19.6%
Public administration
14.1%
Transportation & utilities
6.5%
Professional & management
6.0%
Finance & real estate
5.0%
Occupation
Category % Management, business & arts 54.3% Service 16.1% Sales & office 10.1% Natural resources & construction 18.1% Production & transportation 1.5%
Employment type
Type % Private sector 60.3% Government 22.6% Self-employed 17.1% Unpaid family workers 0.0%
Commute
Method % Drive alone 89.3% Carpool 6.1% Public transit 0.0% Walk 1.0% Work from home 3.6% Other means 0.0% Avg commute (minutes) 27.6
Poverty
Married-couple families
0.0%
Female-led households
100.0%
Income support
Source % of households Social Security 34.3% Retirement income 17.5% Supplemental Security 7.7% Cash public assistance 0.0% Food stamps / SNAP 0.0%
Health indicators
Condition % Obesity 35.6% High blood pressure 43.2% High cholesterol 38.7% Diabetes 12.5% Heart disease 9.0% Stroke 3.8% Asthma 8.6% Arthritis 32.3% Kidney disease 3.5% Pulmonary disease 7.7% Cancer 9.8%
Behavior / access % Smoking 17.3% Binge drinking 17.1% No physical activity 26.2% Less than 7 hrs sleep 25.9% Depression 16.6% Fair or poor health 13.6% Poor mental health 10.3% Poor physical health 10.3% No health insurance 8.6% Visited doctor (checkup) 75.3% Visited dentist 65.9% Cholesterol screening 93.8% Teeth loss 11.4%
Veterans & disability
Veterans Count % Civilian veterans 17 6.3%
Disability % Any disability 2.2% Under 18 0.0% 18–64 years 0.0% 65 and over 15.4%
Health insurance coverage
Type % Private insurance 84.6% Public insurance 23.1% No insurance 3.3% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 321 88.2% 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) 364 100.0% Born in same state 364 100.0% Born in different state 325 89.3% Foreign born 0 0.0% Naturalized citizen 0 0.0% Not a US citizen 0 0.0%
Ancestry
Ancestry Count % Polish 43 11.8% Dutch 7 1.9%
Ancestry Count % French 6 1.6%
Technology access
Metric % of households Computer access 39.3% Internet access 96.5%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 58559
What city is ZIP code 58559 in?
ZIP code 58559 is primarily assigned to Mercer, North Dakota.
What county is ZIP code 58559 in?
ZIP code 58559 falls within Mclean County, North Dakota.
Is ZIP code 58559 mostly owner-occupied?
87% of occupied units in ZIP code 58559 are owner-occupied, well above the national average.
What is the median household income in ZIP code 58559?
The median household income in ZIP code 58559 is $108,250, above the national median of ~$75,000.
What is the population of ZIP code 58559?
ZIP code 58559 has an estimated population of 364 residents, with a density of 2 people per square mile.
What is the typical home value in ZIP code 58559?
The median home value in ZIP code 58559 is $245,000.
What timezone is ZIP code 58559 in?
ZIP code 58559 observes the CST timezone.
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