84320 ZIP Code — Lewiston, UT

Cache County, Utah

ZIP code 84320 is located in Lewiston, Utah, within Cache County. It covers approximately 47.31 square miles and serves a population of 2,746 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 435.

About ZIP code 84320

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $291,000. Owner-occupancy is high at 81%, well above the national average.

The gap between median ($73,750) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 3% is below the national average. 37% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with manufacturing as the leading industry. The average commute of 23 minutes is near the national average.

Educational attainment is near the national average, with 25% of residents holding a bachelor's degree or higher.

Overall, ZIP code 84320 reflects a community defined by high homeownership and a significant Social Security-dependent population.

2,746

population

47.31

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

84320 ZIP code map

Cities in ZIP code 84320

Below are the cities the US Postal Service accepts for ZIP code 84320. Using any city not on this list may result in mail delivery delays.

City	Status
Lewiston	Acceptable
Lewiston	Preferred

Nearby ZIP codes

84333 Richmond (2.7 mi) 84338 Trenton (5.2 mi) 84335 Smithfield (9 mi) 84318 Hyde Park (10.7 mi) 83237 Franklin (10.7 mi) 83286 Weston (11.1 mi) 84341 Logan (12.7 mi) 83232 Dayton (14.4 mi) 83232 Dayton (14.4 mi) 84322 Logan (14.8 mi) 84311 Fielding (16.9 mi) 84325 Mendon (17.2 mi)

Demographics updated 08/2026

Population
Total population	2,746
Population density	58 / sq mi
State FIPS	49
County FIPS	005

Geography
Land area	47.31 sq mi
Water area	0.25 sq mi
Latitude	41.9540
Longitude	-111.8424
Timezone	Mountain (MT)
Area code	435

Total population by age

Gender

Race & ethnicity

Economics updated 08/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	37.2%	41.2%	31.5%
$50k – $100k	37.2%	35.5%	34.6%
$100k – $200k	22.3%	19.2%	27.0%
Over $200k	3.4%	4.1%	7.0%

Demographics & statistics

2,746

Population

People per sq mi

31.1

Median age

$73,750

Median household income

$28,982

Per capita income

$291,000

Median home value

$858

Median monthly rent

80.6%

Home ownership

2.9%

Poverty rate

0.7%

Unemployment

694

Housing units

25.2%

Bachelor's or higher

Age distribution

Male Female

137

Under 5

136

150

5–9

149

115

10–14

113

139

15–19

138

20–24

144

25–34

143

155

35–44

154

158

45–54

157

55–59

60–64

108

65–74

107

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,005	36.6%
18 and over	1,741	63.4%
65 and over	405	14.7%
Median age	31.1 years

Race & ethnicity

White 92.1%

Two or more races 2.9%

Hispanic or Latino 1.8%

American Indian / Alaska Native 1.4%

Other race 1.3%

Asian 0.6%

Group	Count	%
White	2,575	92.1%
Two or more races	80	2.9%
Hispanic or Latino	50	1.8%
American Indian / Alaska Native	38	1.4%
Other race	35	1.3%
Asian	18	0.6%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	37.2%	41.2%	31.5%
$50k – $100k	37.2%	35.5%	34.6%
$100k – $200k	22.3%	19.2%	27.0%
Over $200k	3.4%	4.1%	7.0%

Under $10k 1.1%

$10k–$15k 1.4%

$15k–$25k 1.5%

$25k–$35k 5.6%

$35k–$50k 16.2%

$50k–$75k 24.7%

$75k–$100k 13.5%

$100k–$150k 19.8%

$150k–$200k 10.8%

$200k+ 5.4%

Range	% of households
Under $10k	1.1%
$10k–$15k	1.4%
$15k–$25k	1.5%
$25k–$35k	5.6%
$35k–$50k	16.2%
$50k–$75k	24.7%
$75k–$100k	13.5%
$100k–$150k	19.8%
$150k–$200k	10.8%
$200k+	5.4%
Median income	$73,750

Housing

Home values

Under $50k 1.6%

$50k–$100k 1.9%

$100k–$150k 4.7%

$150k–$200k 14.3%

$200k–$300k 31.1%

$300k–$500k 26.0%

$500k–$1M 15.1%

$1M+ 5.4%

Housing overview

Metric	Value
Median home value	$291,000
Median rent / month	$858
Owner occupied	80.6%
Renter occupied	19.4%
Vacant	6.0%
Single-family detached	87.5%
Large apartment buildings	0.0%
Mobile homes	0.2%
Median rooms	7.0
Avg household size (owned)	3.44

Year built

Era	%
2020 or later	0.0%
2010–2019	4.9%
2000–2009	14.3%
1990–1999	11.0%
1980–1989	9.9%
1970–1979	15.0%
1960–1969	1.4%
1950–1959	7.9%
1940–1949	4.8%
1939 or earlier	30.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.4%
1 bedroom	1.2%
2 bedrooms	16.7%
3 bedrooms	36.6%
4 bedrooms	32.2%
5+ bedrooms	13.0%

Vehicles per household

Vehicles	% of households
No vehicle	2.1%
1 vehicle	13.2%
2 vehicles	38.3%
3 or more	46.4%

Heating fuel

Fuel type	%
Utility gas	81.3%
Electricity	9.5%
Propane / LP gas	6.6%
Fuel oil	1.3%
Wood	1.3%

Households & families

Household type	Count	%
Married-couple family	635	79.6%
Cohabiting couple	18	2.3%
Male householder, no spouse	61	7.6%
Female householder, no spouse	84	10.5%
Households with children under 18	396	49.6%
Households with seniors (65+)	314	39.3%
Average household size	3.43

Marital status

Status	Male	Female
Never married	21.3%	24.4%
Married	67.1%	66.6%
Separated	0.3%	0.0%
Widowed	5.3%	2.1%
Divorced	6.0%	6.9%

Education

Less than 9th grade 1.4%

Some HS, no diploma 4.6%

HS graduate 29.8%

Some college, no degree 29.5%

Associate's degree 9.4%

Bachelor's degree 17.5%

Graduate / professional 7.7%

Metric	%
HS diploma or higher	93.9%
Bachelor's or higher	25.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	37	3.9%
Kindergarten	98	10.4%
Elementary school	415	44.2%
High school	239	25.5%
College / grad school	149	15.9%

Employment

Industry of employment

Manufacturing 19.7%

Education & healthcare 14.4%

Agriculture & mining 13.4%

Retail trade 11.1%

Construction 7.4%

Transportation & utilities 6.7%

Finance & real estate 5.7%

Wholesale trade 5.5%

Public administration 4.4%

Arts, food & hospitality 4.2%

Other services 4.0%

Professional & management 3.5%

Occupation

Category	%
Management, business & arts	31.0%
Service	14.0%
Sales & office	20.6%
Natural resources & construction	11.4%
Production & transportation	23.0%

Employment type

Type	%
Private sector	79.9%
Government	13.8%
Self-employed	5.0%
Unpaid family workers	1.3%

Commute

Method	%
Drive alone	73.5%
Carpool	5.4%
Public transit	0.2%
Walk	9.7%
Work from home	10.7%
Other means	0.5%
Avg commute (minutes)	23.1

Poverty

All people 2.9%

Under 18 years 3.8%

18 and over 2.5%

Married-couple families 1.1%

Female-led households 7.5%

Income support

Source	% of households
Social Security	37.1%
Retirement income	26.7%
Supplemental Security	1.9%
Cash public assistance	1.3%
Food stamps / SNAP	2.4%

Health indicators

Condition	%
Obesity	28.8%
High blood pressure	26.8%
High cholesterol	31.0%
Diabetes	9.1%
Heart disease	5.3%
Stroke	2.6%
Asthma	10.3%
Arthritis	22.7%
Kidney disease	2.6%
Pulmonary disease	5.1%
Cancer	6.4%

Behavior / access	%
Smoking	9.2%
Binge drinking	10.6%
No physical activity	15.9%
Less than 7 hrs sleep	29.2%
Depression	23.8%
Fair or poor health	11.7%
Poor mental health	14.5%
Poor physical health	9.7%
No health insurance	12.1%
Visited doctor (checkup)	68.3%
Visited dentist	75.0%
Cholesterol screening	86.4%
Teeth loss	10.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	118	6.8%

Disability	%
Any disability	9.5%
Under 18	0.6%
18–64 years	7.8%
65 and over	37.0%

Health insurance coverage

Type	%
Private insurance	85.5%
Public insurance	21.7%
No insurance	5.3%
Uninsured under 19	1.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,473	90.1%
Spanish	16	0.6%
Other Indo-European	16	0.6%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,716	98.9%
Born in same state	2,711	98.7%
Born in different state	2,096	76.3%
Foreign born	5	0.2%
Naturalized citizen	30	1.1%
Not a US citizen	4	13.3%

Ancestry

Ancestry	Count	%
French	1,042	37.9%
Dutch	240	8.7%
Arab	204	7.4%
English	63	2.3%

Ancestry	Count	%
Polish	32	1.2%
Italian	27	1%
Norwegian	4	0.1%
Irish	2	0.1%

Technology access

Metric	% of households
Computer access	29.1%
Internet access	94.6%

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

Frequently asked questions about ZIP code 84320

What city is ZIP code 84320 in?

ZIP code 84320 is primarily assigned to Lewiston, Utah.

What county is ZIP code 84320 in?

ZIP code 84320 falls within Cache County, Utah.

Is ZIP code 84320 family-oriented?

37% of residents in ZIP code 84320 are under 18, reflecting a younger, family-oriented community.

Is ZIP code 84320 mostly owner-occupied?

81% of occupied units in ZIP code 84320 are owner-occupied, well above the national average.

Does ZIP code 84320 have a large retiree population?

37% of households in ZIP code 84320 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 84320?

ZIP code 84320 has an estimated population of 2,746 residents, with a density of 58 people per square mile.

What timezone is ZIP code 84320 in?

ZIP code 84320 observes the MST timezone.