84021 ZIP Code — Duchesne, UT

Duchesne County, Utah

ZIP code 84021 is located in Duchesne, Utah, within Duchesne County. It covers approximately 605.71 square miles and serves a population of 3,272 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 435.

About ZIP code 84021

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $198,600. Owner-occupancy is high at 76%, well above the national average.

Median household income is $67,143. 32% 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 23 minutes is near the national average.

College attainment at 9% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 84021 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

3,272

population

605.71

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

84021 ZIP code map

Cities in ZIP code 84021

Below are the cities the US Postal Service accepts for ZIP code 84021. Using any city not on this list may result in mail delivery delays.

City	Status
Duchesne	Acceptable
Duchesne	Preferred

Nearby ZIP codes

84007 Bluebell (19.1 mi)

Demographics updated 06/2026

Population
Total population	3,272
Population density	5 / sq mi
State FIPS	49
County FIPS	013

Geography
Land area	605.71 sq mi
Water area	5.13 sq mi
Latitude	40.0702
Longitude	-110.4740
Timezone	Mountain (MT)
Area code	435

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	47.4%	40.2%	31.5%
$50k – $100k	31.4%	36.7%	34.6%
$100k – $200k	18.0%	19.7%	27.0%
Over $200k	3.2%	3.4%	7.0%

Demographics & statistics

3,272

Population

People per sq mi

36.7

Median age

$67,143

Median household income

$27,273

Per capita income

$198,600

Median home value

$983

Median monthly rent

76.0%

Home ownership

14.1%

Poverty rate

1.9%

Unemployment

1,448

Housing units

8.5%

Bachelor's or higher

Age distribution

Male Female

123

Under 5

103

179

5–9

150

148

10–14

124

139

15–19

117

20–24

168

25–34

141

233

35–44

196

208

45–54

175

143

55–59

120

60–64

128

65–74

107

100

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,029	31.4%
18 and over	2,243	68.6%
65 and over	465	14.2%
Median age	36.7 years

Race & ethnicity

White 89.8%

Hispanic or Latino 3.5%

Two or more races 2.7%

Other race 2.3%

American Indian / Alaska Native 0.9%

Native Hawaiian / Pacific Islander 0.5%

Black or African American 0.3%

Group	Count	%
White	3,047	89.8%
Hispanic or Latino	120	3.5%
Two or more races	92	2.7%
Other race	77	2.3%
American Indian / Alaska Native	30	0.9%
Native Hawaiian / Pacific Islander	17	0.5%
Black or African American	9	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	47.4%	40.2%	31.5%
$50k – $100k	31.4%	36.7%	34.6%
$100k – $200k	18.0%	19.7%	27.0%
Over $200k	3.2%	3.4%	7.0%

Under $10k 5.7%

$10k–$15k 3.1%

$15k–$25k 7.1%

$25k–$35k 8.1%

$35k–$50k 10.5%

$50k–$75k 21.3%

$75k–$100k 17.3%

$100k–$150k 15.1%

$150k–$200k 5.6%

$200k+ 6.3%

Range	% of households
Under $10k	5.7%
$10k–$15k	3.1%
$15k–$25k	7.1%
$25k–$35k	8.1%
$35k–$50k	10.5%
$50k–$75k	21.3%
$75k–$100k	17.3%
$100k–$150k	15.1%
$150k–$200k	5.6%
$200k+	6.3%
Median income	$67,143

Housing

Home values

Under $50k 2.7%

$50k–$100k 10.9%

$100k–$150k 16.7%

$150k–$200k 20.3%

$200k–$300k 23.7%

$300k–$500k 20.6%

$500k–$1M 4.5%

$1M+ 0.7%

Housing overview

Metric	Value
Median home value	$198,600
Median rent / month	$983
Owner occupied	76.0%
Renter occupied	24.0%
Vacant	36.3%
Single-family detached	71.7%
Large apartment buildings	0.0%
Mobile homes	24.8%
Median rooms	5.2
Avg household size (owned)	2.78

Year built

Era	%
2020 or later	0.0%
2010–2019	6.6%
2000–2009	14.4%
1990–1999	13.4%
1980–1989	17.4%
1970–1979	22.8%
1960–1969	8.2%
1950–1959	4.4%
1940–1949	5.0%
1939 or earlier	7.9%

Bedrooms

Size	% of units
No bedroom (studio)	1.6%
1 bedroom	9.2%
2 bedrooms	24.7%
3 bedrooms	35.3%
4 bedrooms	20.1%
5+ bedrooms	9.1%

Vehicles per household

Vehicles	% of households
No vehicle	1.5%
1 vehicle	18.9%
2 vehicles	37.4%
3 or more	42.2%

Heating fuel

Fuel type	%
Utility gas	48.2%
Electricity	25.9%
Propane / LP gas	12.6%
Wood	10.3%
Solar	0.6%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	702	64.5%
Cohabiting couple	38	3.5%
Male householder, no spouse	136	12.5%
Female householder, no spouse	212	19.5%
Households with children under 18	429	39.4%
Households with seniors (65+)	290	26.7%
Average household size	2.88

Marital status

Status	Male	Female
Never married	31.5%	16.8%
Married	57.0%	63.3%
Separated	3.3%	1.1%
Widowed	1.3%	7.0%
Divorced	6.9%	11.8%

Education

Less than 9th grade 1.1%

Some HS, no diploma 9.5%

HS graduate 39.8%

Some college, no degree 30.5%

Associate's degree 10.7%

Bachelor's degree 6.4%

Graduate / professional 2.1%

Metric	%
HS diploma or higher	89.4%
Bachelor's or higher	8.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	63	7.4%
Kindergarten	70	8.3%
Elementary school	437	51.5%
High school	221	26.1%
College / grad school	57	6.7%

Employment

Industry of employment

Education & healthcare 19.3%

Construction 11.8%

Transportation & utilities 11.5%

Agriculture & mining 11.4%

Public administration 9.8%

Retail trade 8.7%

Manufacturing 5.5%

Other services 5.4%

Wholesale trade 5.3%

Arts, food & hospitality 5.1%

Professional & management 3.2%

Finance & real estate 1.8%

Information 1.2%

Occupation

Category	%
Management, business & arts	32.4%
Service	12.6%
Sales & office	17.4%
Natural resources & construction	16.3%
Production & transportation	21.3%

Employment type

Type	%
Private sector	73.2%
Government	22.5%
Self-employed	4.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	79.2%
Carpool	7.7%
Public transit	0.0%
Walk	1.6%
Work from home	11.2%
Other means	0.4%
Avg commute (minutes)	22.5

Poverty

All people 14.1%

Under 18 years 16.8%

18 and over 12.8%

Married-couple families 9.8%

Female-led households 37.2%

Income support

Source	% of households
Social Security	31.6%
Retirement income	18.3%
Supplemental Security	5.4%
Cash public assistance	0.5%
Food stamps / SNAP	11.2%

Health indicators

Condition	%
Obesity	29.9%
High blood pressure	31.6%
High cholesterol	30.7%
Diabetes	10.4%
Heart disease	6.7%
Stroke	3.3%
Asthma	11.0%
Arthritis	26.2%
Kidney disease	3.0%
Pulmonary disease	7.2%
Cancer	6.4%

Behavior / access	%
Smoking	14.3%
Binge drinking	11.7%
No physical activity	19.2%
Less than 7 hrs sleep	33.7%
Depression	23.7%
Fair or poor health	15.3%
Poor mental health	15.9%
Poor physical health	11.8%
No health insurance	15.5%
Visited doctor (checkup)	66.7%
Visited dentist	58.3%
Cholesterol screening	84.1%
Teeth loss	14.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	196	8.7%

Disability	%
Any disability	17.5%
Under 18	11.0%
18–64 years	15.7%
65 and over	38.5%

Health insurance coverage

Type	%
Private insurance	62.1%
Public insurance	38.9%
No insurance	10.0%
Uninsured under 19	5.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,046	93.1%
Spanish	73	2.4%
Other Indo-European	68	2.2%
Asian & Pacific Islander	0	0.0%
Other languages	5	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,190	97.5%
Born in same state	3,186	97.4%
Born in different state	2,468	75.4%
Foreign born	4	0.1%
Naturalized citizen	82	2.5%
Not a US citizen	22	26.8%

Ancestry

Ancestry	Count	%
French	1,120	34.2%
Italian	403	12.3%
Dutch	217	6.6%
Arab	70	2.1%

Ancestry	Count	%
Polish	57	1.7%
English	52	1.6%
Irish	5	0.2%

Technology access

Metric	% of households
Computer access	33.3%
Internet access	96.7%

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

Frequently asked questions about ZIP code 84021

What city is ZIP code 84021 in?

ZIP code 84021 is primarily assigned to Duchesne, Utah.

What county is ZIP code 84021 in?

ZIP code 84021 falls within Duchesne County, Utah.

Is ZIP code 84021 family-oriented?

31% of residents in ZIP code 84021 are under 18, reflecting a younger, family-oriented community.

How educated is the population of ZIP code 84021?

9% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the population of ZIP code 84021?

ZIP code 84021 has an estimated population of 3,272 residents, with a density of 5 people per square mile.

What is the typical home value in ZIP code 84021?

The median home value in ZIP code 84021 is $198,600.

What timezone is ZIP code 84021 in?

ZIP code 84021 observes the MST timezone.