Declo ZIP Code List — Cassia County, ID

There is one unique ZIP code in Declo, Idaho and it is 83323. Area code: 208.

ZIP codes

203.64

sq mi land

1.17

sq mi water

208

area code

Declo, ID ZIP code map

About Declo, ID

Declo, Idaho, is a small yet charming city located in the heart of Cassia County. Known for its tranquil atmosphere and friendly community, Declo provides a unique slice of Idaho life. The city's quaint character and stunning landscapes make it a remarkable place to call home or visit.

Location & geography

Nestled in southern Idaho, Declo covers a land area of 203.64 square miles and includes a small water area of 1.17 square miles. The city is surrounded by the picturesque landscapes typical of the region and is located approximately 20 miles northeast of the larger city of Burley. Other nearby cities include Rupert, which is about 18 miles to the northwest, and Heyburn, approximately 15 miles to the south.

Community & economy

The character of Declo is deeply rooted in its agricultural background, with practices such as farming and ranching playing a significant role in the local economy. Residents enjoy a close-knit community atmosphere where daily life is marked by local events, school activities, and a friendly environment. Although small, Declo fosters a strong sense of pride among its inhabitants, reflected in their engagement with local activities and initiatives.

Transportation

Traveling to and from Declo is facilitated by U.S. Route 30, which runs through the city and connects it to neighboring towns and cities. The nearest named airports include the Burley Municipal Airport, situated about 20 miles away, which provides essential regional connectivity. Public transit options are limited, emphasizing the necessity of personal vehicles for residents and visitors alike.

History

Declo was founded in the early 1900s and quickly developed into a hub for agriculture, taking advantage of the region's rich soils and favorable climate. Over the years, the city has maintained its agricultural roots, with local industries centered around farming and livestock production. Notable events in Declo's history include the establishment of the local school district, which has been a cornerstone of community identity and development.

Did you know?

One surprising or little-known fact about Declo is that it is home to the Cassia County Fair, an event that showcases local agricultural products and fosters community spirit. Additionally, Declo's rich natural surroundings provide ample opportunities for outdoor activities, such as hiking and fishing, making it a hidden gem for nature enthusiasts.

ZIP codes for Declo, ID (1)

ZIP code	City	County	Map
83323	Declo	Cassia	View map

Demographics & statistics

1,646

Population

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

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%
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	%
High blood pressure	28.8%
High cholesterol	29.5%
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	%
Binge drinking	15.5%
No physical activity	22.8%
Less than 7 hrs sleep	30.1%
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%
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

What is the ZIP code for Declo, ID?

Declo, ID has one ZIP code: 83323.

What is the main ZIP code for Declo, ID?

The primary ZIP code for Declo, ID is 83323. The city uses area code 208 for phone service.

What county is Declo, ID in?

Declo is located in Cassia County, Idaho.

How many ZIP codes are in Declo, ID?

Declo, ID has 1 ZIP code.

What is the ZIP code for the Declo city area in Cassia County?

Declo, Idaho uses the single ZIP code 83323 for all mail delivery in the city and surrounding areas.

If I'm sending mail to a business in downtown Declo, what ZIP code should I use?

All mail to downtown Declo and the surrounding community should be addressed to ZIP code 83323.