83323 ZIP Code — Declo, ID

Cassia County, Idaho

ZIP code 83323 is located in Declo, Idaho, within Cassia County. It covers approximately 203.64 square miles and serves a population of 1,646 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 208.

About ZIP code 83323

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $283,800. Owner-occupancy sits near the national average at 64%.

Median household income is $59,414. The poverty rate of 6% 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 agriculture and mining as the leading industry. The average commute of 16 minutes is near the national average.

College attainment at 14% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 83323 reflects a community defined by a trades-oriented workforce and a significant Social Security-dependent population.

1,646

population

203.64

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

83323 ZIP code map

Cities in ZIP code 83323

Below are the cities the US Postal Service accepts for ZIP code 83323. Using any city not on this list may result in mail delivery delays.

City	Status
Declo	Acceptable
Declo	Preferred

Nearby ZIP codes

83350 Rupert (12.1 mi) 83311 Albion (15.6 mi) 83342 Malta (18.8 mi) 83336 Heyburn (18.8 mi)

Demographics updated 06/2026

Population
Total population	1,646
Population density	8 / sq mi
State FIPS	16
County FIPS	031

Geography
Land area	203.64 sq mi
Water area	1.17 sq mi
Latitude	42.5682
Longitude	-113.4415
Timezone	Mountain (MT)
Area code	208

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	38.5%	46.9%	41.8%
$50k – $100k	41.8%	31.9%	34.0%
$100k – $200k	17.1%	17.9%	19.5%
Over $200k	2.6%	3.3%	4.7%

Demographics & statistics

1,646

Population

People per sq mi

38.2

Median age

$59,414

Median household income

$29,765

Per capita income

$283,800

Median home value

$869

Median monthly rent

63.8%

Home ownership

5.6%

Poverty rate

2.2%

Unemployment

453

Housing units

14.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

109

15–19

149

20–24

25–34

113

35–44

116

118

45–54

160

55–59

60–64

65–74

101

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	427	25.9%
18 and over	1,219	74.1%
65 and over	230	14.0%
Median age	38.2 years

Race & ethnicity

White 70.6%

Hispanic or Latino 14.5%

Other race 11.6%

Two or more races 3%

Black or African American 0.2%

Group	Count	%
White	1,360	70.6%
Hispanic or Latino	279	14.5%
Other race	224	11.6%
Two or more races	58	3%
Black or African American	4	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	38.5%	46.9%	41.8%
$50k – $100k	41.8%	31.9%	34.0%
$100k – $200k	17.1%	17.9%	19.5%
Over $200k	2.6%	3.3%	4.7%

Under $10k 2.4%

$15k–$25k 3.9%

$25k–$35k 6.9%

$35k–$50k 27.4%

$50k–$75k 22.0%

$75k–$100k 12.0%

$100k–$150k 12.0%

$150k–$200k 8.5%

$200k+ 4.9%

Range	% of households
Under $10k	2.4%
$15k–$25k	3.9%
$25k–$35k	6.9%
$35k–$50k	27.4%
$50k–$75k	22.0%
$75k–$100k	12.0%
$100k–$150k	12.0%
$150k–$200k	8.5%
$200k+	4.9%
Median income	$59,414

Housing

Home values

Under $50k 6.9%

$50k–$100k 4.5%

$100k–$150k 8.5%

$150k–$200k 6.1%

$200k–$300k 28.4%

$300k–$500k 32.6%

$500k–$1M 9.0%

$1M+ 4.0%

Housing overview

Metric	Value
Median home value	$283,800
Median rent / month	$869
Owner occupied	63.8%
Renter occupied	36.2%
Vacant	11.4%
Single-family detached	81.7%
Large apartment buildings	0.0%
Mobile homes	13.9%
Median rooms	5.7
Avg household size (owned)	2.42

Year built

Era	%
2020 or later	0.0%
2010–2019	19.3%
2000–2009	9.0%
1990–1999	19.6%
1980–1989	9.1%
1970–1979	8.8%
1960–1969	2.5%
1950–1959	10.6%
1940–1949	1.9%
1939 or earlier	18.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	4.2%
2 bedrooms	23.1%
3 bedrooms	43.3%
4 bedrooms	23.2%
5+ bedrooms	6.1%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	21.8%
2 vehicles	39.1%
3 or more	39.1%

Heating fuel

Fuel type	%
Utility gas	4.4%
Electricity	77.8%
Propane / LP gas	7.4%
Fuel oil	8.6%
Wood	1.4%

Households & families

Household type	Count	%
Married-couple family	381	64.5%
Cohabiting couple	38	6.4%
Male householder, no spouse	75	12.7%
Female householder, no spouse	97	16.4%
Households with children under 18	172	29.1%
Households with seniors (65+)	152	25.7%
Average household size	2.79

Marital status

Status	Male	Female
Never married	28.9%	40.8%
Married	60.8%	50.6%
Separated	0.0%	0.0%
Widowed	1.1%	2.2%
Divorced	9.2%	6.5%

Education

Less than 9th grade 10.0%

Some HS, no diploma 5.4%

HS graduate 28.6%

Some college, no degree 30.1%

Associate's degree 11.4%

Bachelor's degree 5.0%

Graduate / professional 9.4%

Metric	%
HS diploma or higher	84.6%
Bachelor's or higher	14.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	33	7.2%
Kindergarten	2	0.4%
Elementary school	153	33.2%
High school	205	44.5%
College / grad school	68	14.8%

Employment

Industry of employment

Agriculture & mining 23.7%

Education & healthcare 19.8%

Arts, food & hospitality 18.3%

Manufacturing 9.9%

Professional & management 5.8%

Finance & real estate 5.0%

Retail trade 4.7%

Other services 3.8%

Construction 3.0%

Wholesale trade 2.1%

Public administration 2.0%

Transportation & utilities 1.5%

Information 0.4%

Occupation

Category	%
Management, business & arts	31.8%
Service	21.2%
Sales & office	14.1%
Natural resources & construction	20.9%
Production & transportation	11.9%

Employment type

Type	%
Private sector	79.9%
Government	18.6%
Self-employed	1.0%
Unpaid family workers	0.5%

Commute

Method	%
Drive alone	85.6%
Carpool	5.4%
Public transit	0.0%
Walk	4.8%
Work from home	2.8%
Other means	1.4%
Avg commute (minutes)	16.2

Poverty

All people 5.6%

Under 18 years 9.7%

18 and over 4.2%

Married-couple families 0.0%

Female-led households 16.4%

Income support

Source	% of households
Social Security	34.3%
Retirement income	20.5%
Supplemental Security	1.5%
Cash public assistance	0.5%
Food stamps / SNAP	5.1%

Health indicators

Condition	%
Obesity	33.6%
High blood pressure	28.8%
High cholesterol	29.5%
Diabetes	9.2%
Heart disease	5.8%
Stroke	2.7%
Asthma	9.4%
Arthritis	22.0%
Kidney disease	2.6%
Pulmonary disease	5.8%
Cancer	5.8%

Behavior / access	%
Smoking	15.5%
Binge drinking	15.5%
No physical activity	22.8%
Less than 7 hrs sleep	30.1%
Depression	18.7%
Fair or poor health	13.6%
Poor mental health	13.7%
Poor physical health	10.3%
No health insurance	18.3%
Visited doctor (checkup)	67.1%
Visited dentist	63.3%
Cholesterol screening	86.1%
Teeth loss	13.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	58	4.8%

Disability	%
Any disability	15.2%
Under 18	2.3%
18–64 years	16.0%
65 and over	35.7%

Health insurance coverage

Type	%
Private insurance	81.0%
Public insurance	27.6%
No insurance	2.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,587	96.4%
Spanish	116	7.3%
Other Indo-European	116	7.3%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,480	89.9%
Born in same state	1,475	89.6%
Born in different state	886	53.8%
Foreign born	5	0.3%
Naturalized citizen	166	10.1%
Not a US citizen	50	30.1%

Ancestry

Ancestry	Count	%
French	374	22.7%
Arab	126	7.7%
Italian	59	3.6%

Ancestry	Count	%
Polish	21	1.3%
English	20	1.2%
Dutch	10	0.6%

Technology access

Metric	% of households
Computer access	35.9%
Internet access	95.1%

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

Frequently asked questions about ZIP code 83323

What city is ZIP code 83323 in?

ZIP code 83323 is primarily assigned to Declo, Idaho.

What county is ZIP code 83323 in?

ZIP code 83323 falls within Cassia County, Idaho.

How educated is the population of ZIP code 83323?

14% 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 83323?

ZIP code 83323 has an estimated population of 1,646 residents, with a density of 8 people per square mile.

What is the median household income in ZIP code 83323?

The median household income in ZIP code 83323 is $59,414, below the national median of ~$75,000.

What is the typical home value in ZIP code 83323?

The median home value in ZIP code 83323 is $283,800.

What timezone is ZIP code 83323 in?

ZIP code 83323 observes the MST timezone.