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Nevada ZIP Codes
Humboldt County
Mc Dermitt, NV
89421
89421 ZIP Code — Mc Dermitt, NV
Humboldt County, Nevada
ZIP code 89421 is located in
Mc Dermitt ,
Nevada ,
within Humboldt County .
It covers approximately 928.30 square miles and serves a population of
363 residents.
This is a standard ZIP code in the Pacific (PT) timezone,
served by area code 775 .
About ZIP code 89421
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. Median home value is $65,000. Owner-occupancy is high at 83%, well above the national average.
The gap between median ($22,222) and mean household income suggests income inequality — a small number of higher earners pull the average up. Poverty affects 42% of residents, above the national average. SNAP benefit usage at 38% of households reflects economic stress in the area. 68% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is natural resources, construction, and trades, with retail trade as the leading industry. The average commute of 16 minutes is near the national average.
College attainment at 4% is below the national average, consistent with a trades and production-oriented local economy.
Health indicators show elevated rates of smoking (25%) compared to national benchmarks.
Notable community characteristics include disability rates above the national average at 36%.
Overall, ZIP code 89421 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.
89421 ZIP code map
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Cities in ZIP code 89421
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Demographics
updated 06/2026
Population
Total population
363
Population density
0 / sq mi
State FIPS
32
County FIPS
013
Geography
Land area
928.30 sq mi
Water area
0.00 sq mi
Latitude
41.8787
Longitude
-117.9733
Timezone
Pacific (PT)
Area code
775
Economics
updated 06/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
70.6%
39.9%
40.3%
$50k – $100k
24.9%
30.9%
32.2%
$100k – $200k
4.5%
24.2%
21.6%
Over $200k
0.0%
5.0%
5.9%
Demographics & statistics
$22,222
Median household income
Age distribution
Age summary
Group Count % Under 18 61 16.8% 18 and over 302 83.2% 65 and over 134 36.9% Median age 56.1 years
Race & ethnicity
American Indian / Alaska Native
62.4%
Native Hawaiian / Pacific Islander
0.5%
Group Count % American Indian / Alaska Native 227 62.4% White 113 31% Two or more races 21 5.8% Native Hawaiian / Pacific Islander 2 0.5% Hispanic or Latino 1 0.3%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
70.6%
39.9%
40.3%
$50k – $100k
24.9%
30.9%
32.2%
$100k – $200k
4.5%
24.2%
21.6%
Over $200k
0.0%
5.0%
5.9%
Range % of households Under $10k 8.5% $10k–$15k 32.4% $15k–$25k 13.3% $25k–$35k 4.8% $35k–$50k 4.3% $50k–$75k 8.0% $75k–$100k 18.1% $100k–$150k 8.0% $200k+ 2.7% Median income $22,222
Housing
Housing overview
Metric Value Median home value $65,000 Median rent / month $0 Owner occupied 83.0% Renter occupied 17.0% Vacant 31.1% Single-family detached 50.2% Large apartment buildings 0.0% Mobile homes 49.8% Median rooms 4.7 Avg household size (owned) 2.08
Year built
Era % 2020 or later 0.0% 2010–2019 11.0% 2000–2009 15.4% 1990–1999 6.6% 1980–1989 16.1% 1970–1979 31.5% 1960–1969 6.2% 1950–1959 4.8% 1940–1949 1.5% 1939 or earlier 7.0%
Bedrooms
Size % of units No bedroom (studio) 1.8% 1 bedroom 5.1% 2 bedrooms 23.1% 3 bedrooms 65.9% 4 bedrooms 4.0% 5+ bedrooms 0.0%
Vehicles per household
Vehicles % of households No vehicle 4.3% 1 vehicle 40.4% 2 vehicles 29.8% 3 or more 25.5%
Heating fuel
Fuel type % Electricity 80.9% Propane / LP gas 4.3% Wood 14.9%
Households & families
Household type Count % Married-couple family 48 25.5% Cohabiting couple 3 1.6% Male householder, no spouse 29 15.4% Female householder, no spouse 108 57.4% Households with children under 18 52 27.7% Households with seniors (65+) 95 50.5% Average household size 1.93
Marital status
Status Male Female Never married 28.7% 37.9% Married 52.2% 33.7% Separated 2.6% 1.6% Widowed 6.1% 15.3% Divorced 10.4% 11.6%
Education
Some HS, no diploma
22.1%
Some college, no degree
16.1%
Graduate / professional
2.5%
Metric % HS diploma or higher 76.8% Bachelor's or higher 3.5%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 9 17.6% Kindergarten 2 3.9% Elementary school 31 60.8% High school 5 9.8% College / grad school 4 7.8%
Employment
Industry of employment
Education & healthcare
17.0%
Agriculture & mining
14.2%
Arts, food & hospitality
9.9%
Transportation & utilities
2.8%
Public administration
0.7%
Occupation
Category % Management, business & arts 22.7% Service 30.5% Sales & office 9.9% Natural resources & construction 32.6% Production & transportation 4.3%
Employment type
Type % Private sector 46.1% Government 48.9% Self-employed 2.8% Unpaid family workers 2.1%
Commute
Method % Drive alone 84.2% Carpool 2.9% Public transit 0.0% Walk 0.7% Work from home 10.1% Other means 2.2% Avg commute (minutes) 16.1
Poverty
Married-couple families
6.3%
Female-led households
63.5%
Income support
Source % of households Social Security 67.6% Retirement income 11.7% Supplemental Security 6.9% Cash public assistance 3.2% Food stamps / SNAP 38.3%
Health indicators
Condition % Obesity 33.4% High blood pressure 38.1% High cholesterol 35.3% Diabetes 14.2% Heart disease 8.9% Stroke 4.5% Asthma 11.9% Arthritis 29.2% Kidney disease 3.7% Pulmonary disease 9.6% Cancer 7.5%
Behavior / access % Smoking 25.0% Binge drinking 17.4% No physical activity 25.8% Less than 7 hrs sleep 35.9% Depression 22.1% Fair or poor health 21.4% Poor mental health 18.1% Poor physical health 14.7% No health insurance 14.4% Visited doctor (checkup) 71.5% Visited dentist 57.8% Cholesterol screening 89.8% Teeth loss 19.5%
Veterans & disability
Veterans Count % Civilian veterans 15 5.0%
Disability % Any disability 35.5% Under 18 0.0% 18–64 years 31.5% 65 and over 56.7%
Health insurance coverage
Type % Private insurance 30.9% Public insurance 74.1% No insurance 11.6% Uninsured under 19 12.5%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 344 94.8% Spanish 14 4.1% 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) 363 100.0% Born in same state 363 100.0% Born in different state 257 70.8% Foreign born 0 0.0% Naturalized citizen 0 0.0% Not a US citizen 0 0.0%
Ancestry
Ancestry Count % English 25 6.9% French 13 3.6%
Ancestry Count % Italian 10 2.8%
Technology access
Metric % of households Computer access 51.8% Internet access 71.8%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 89421
What city is ZIP code 89421 in?
ZIP code 89421 is primarily assigned to Mc Dermitt, Nevada.
What county is ZIP code 89421 in?
ZIP code 89421 falls within Humboldt County, Nevada.
Does ZIP code 89421 have a large retiree population?
68% of households in ZIP code 89421 receive Social Security income, suggesting a significant retiree or disability population.
What is the poverty rate in ZIP code 89421?
42% of residents in ZIP code 89421 live below the poverty line, above the national average.
Does ZIP code 89421 have an older population?
37% of residents in ZIP code 89421 are 65 or older, above the national average of ~17%.
How educated is the population of ZIP code 89421?
4% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.
What timezone is ZIP code 89421 in?
ZIP code 89421 observes the PST timezone.
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