Caldwell ZIP Code List — Canyon County, ID

There are 3 unique ZIP codes in Caldwell, Idaho. Area code: 208.

ZIP codes

254.60

sq mi land

8.05

sq mi water

208

area code

Caldwell, ID ZIP code map

About Caldwell, ID

Caldwell is a vibrant city located in Idaho, known for its welcoming community and rich agricultural heritage. As a part of Canyon County, Caldwell has a unique blend of urban amenities and rural charm. Its commitment to preserving its history while fostering growth makes it an intriguing place to live and visit.

Location & geography

Caldwell is situated in southwestern Idaho, nestled within picturesque surroundings. The city is approximately 22 miles west of Boise and about 10 miles from Nampa, making it conveniently located near other urban centers. Covering a total area of 262.65 square miles, Caldwell features 254.60 square miles of land and 8.05 square miles of water, contributing to its diverse terrain.

Community & economy

Caldwell boasts a diverse community characterized by a strong sense of togetherness and pride in local culture. Key industries include agriculture, healthcare, and education, providing a variety of job opportunities for residents. Daily life in Caldwell can include visits to local farmers' markets, outdoor activities, and community events that celebrate its history and culture.

Transportation

Caldwell is accessible via major highways including Interstate 84, which facilitates easy travel to Boise and beyond. The nearest airport is the Boise Airport, which is approximately 25 miles away, providing residents with connectivity to national and international destinations. Public transportation options are available but may be limited, prompting many to rely on personal vehicles.

History

Caldwell was founded in the late 19th century and rapidly developed as a key agricultural hub in the region. Its early economy was heavily reliant on the railroad, which played a significant role in its growth and accessibility. Notable events include the establishment of the Caldwell Night Rodeo, a widely attended annual event that showcases the city's western heritage.

Did you know?

One surprising fact about Caldwell is that it was originally known as 'Caldwell's Station' because of its significance as a railroad stop. The city is also home to the popular Indian Creek Winery, which contributes to its burgeoning wine tourism industry.

ZIP codes for Caldwell, ID (3)

ZIP code	City	County	Map
83605	Caldwell	Canyon	View map
83606	Caldwell	Canyon	View map
83607	Caldwell	Canyon	View map

Demographics & statistics

73,814

Population

32.9

Median age

$65,256

Median household income

$25,764

Per capita income

$296,600

Median home value

$1,075

Median monthly rent

73.4%

Home ownership

12.1%

Poverty rate

4.3%

Unemployment

18,548

Housing units

17.8%

Bachelor's or higher

Age distribution

Male Female

2,746

Under 5

2,777

2,746

5–9

2,777

3,442

10–14

3,483

3,161

15–19

3,198

2,473

20–24

2,501

4,752

25–34

4,808

4,709

35–44

4,764

4,095

45–54

4,143

2,099

55–59

2,123

2,002

60–64

2,025

2,568

65–74

2,597

1,470

75–84

1,487

431

85+

437

← Male

Female →

Age summary

Group	Count	%
Under 18	21,923	29.8%
18 and over	51,891	70.3%
65 and over	8,990	12.3%
Median age	32.9 years

Race & ethnicity

White 56.3%

Hispanic or Latino 19.5%

Other race 13.4%

Two or more races 8.8%

American Indian / Alaska Native 0.9%

Asian 0.8%

Black or African American 0.3%

Group	Count	%
White	51,573	56.3%
Hispanic or Latino	17,868	19.5%
Other race	12,282	13.4%
Two or more races	8,099	8.8%
American Indian / Alaska Native	837	0.9%
Asian	770	0.8%
Black or African American	232	0.3%

Household income

Under $10k 4.3%

$10k–$15k 3.7%

$15k–$25k 8.5%

$25k–$35k 8.1%

$35k–$50k 11.7%

$50k–$75k 21.9%

$75k–$100k 15.9%

$100k–$150k 18.9%

$150k–$200k 4.2%

$200k+ 3.1%

Range	% of households
Under $10k	4.3%
$10k–$15k	3.7%
$15k–$25k	8.5%
$25k–$35k	8.1%
$35k–$50k	11.7%
$50k–$75k	21.9%
$75k–$100k	15.9%
$100k–$150k	18.9%
$150k–$200k	4.2%
$200k+	3.1%
Median income	$65,256

Housing

Home values

Under $50k 6.3%

$50k–$100k 2.5%

$100k–$150k 4.7%

$150k–$200k 9.7%

$200k–$300k 29.2%

$300k–$500k 35.8%

$500k–$1M 10.3%

$1M+ 1.7%

Housing overview

Metric	Value
Median home value	$296,600
Median rent / month	$1,075
Owner occupied	73.4%
Renter occupied	26.7%
Vacant	3.6%
Single-family detached	78.9%
Large apartment buildings	2.2%
Mobile homes	7.5%
Median rooms	5.9
Avg household size (owned)	3.10

Year built

Era	%
2020 or later	1.1%
2010–2019	16.4%
2000–2009	26.6%
1990–1999	15.9%
1980–1989	4.4%
1970–1979	13.1%
1960–1969	6.3%
1950–1959	5.0%
1940–1949	4.9%
1939 or earlier	6.6%

Bedrooms

Size	% of units
No bedroom (studio)	1.3%
1 bedroom	5.0%
2 bedrooms	16.4%
3 bedrooms	50.8%
4 bedrooms	19.1%
5+ bedrooms	7.5%

Vehicles per household

Vehicles	% of households
No vehicle	3.8%
1 vehicle	21.5%
2 vehicles	40.7%
3 or more	34.1%

Heating fuel

Fuel type	%
Utility gas	54.2%
Electricity	35.3%
Propane / LP gas	3.7%
Fuel oil	2.3%
Wood	3.4%
Solar	0.1%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	13,217	55.2%
Cohabiting couple	1,947	8.1%
Male householder, no spouse	3,664	14.9%
Female householder, no spouse	5,410	21.8%
Households with children under 18	9,728	40.3%
Households with seniors (65+)	6,608	27.5%
Average household size	2.98

Marital status

Status	Male	Female
Never married	33.3%	27.8%
Married	53.9%	51.1%
Separated	0.5%	2.2%
Widowed	2.3%	6.8%
Divorced	10.1%	12.2%

Education

Less than 9th grade 7.6%

Some HS, no diploma 9.3%

HS graduate 32.7%

Some college, no degree 23.8%

Associate's degree 8.9%

Bachelor's degree 13.5%

Graduate / professional 4.3%

Metric	%
HS diploma or higher	83.2%
Bachelor's or higher	17.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	941	4.4%
Kindergarten	1,110	5.3%
Elementary school	9,690	45.3%
High school	5,549	26.0%
College / grad school	4,187	19.2%

Employment

Industry of employment

Education & healthcare 21.7%

Construction 11.7%

Manufacturing 11.5%

Retail trade 11.0%

Professional & management 9.3%

Arts, food & hospitality 7.8%

Transportation & utilities 7.5%

Other services 5.2%

Agriculture & mining 4.3%

Public administration 3.9%

Finance & real estate 3.7%

Wholesale trade 1.7%

Information 1.1%

Occupation

Category	%
Management, business & arts	29.4%
Service	18.1%
Sales & office	17.6%
Natural resources & construction	17.5%
Production & transportation	17.5%

Employment type

Type	%
Private sector	79.9%
Government	12.9%
Self-employed	7.1%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	77.9%
Carpool	9.7%
Public transit	0.2%
Walk	1.4%
Other means	0.9%
Avg commute (minutes)	25.9

Poverty

All people 12.1%

Under 18 years 15.3%

18 and over 10.7%

Married-couple families 5.7%

Female-led households 21.5%

Income support

Source	% of households
Social Security	29.5%
Retirement income	20.6%
Supplemental Security	6.3%
Cash public assistance	3.7%
Food stamps / SNAP	12.7%

Health indicators

Condition	%
High blood pressure	32.5%
High cholesterol	31.9%
Heart disease	6.3%
Stroke	3.2%
Asthma	10.8%
Arthritis	23.3%
Kidney disease	3.0%
Pulmonary disease	7.2%
Cancer	5.7%

Behavior / access	%
Binge drinking	13.9%
No physical activity	25.8%
Less than 7 hrs sleep	30.6%
Fair or poor health	18.2%
Poor mental health	15.6%
Poor physical health	12.8%
No health insurance	22.4%
Visited doctor (checkup)	69.9%
Visited dentist	58.9%
Cholesterol screening	82.8%
Teeth loss	17.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	4,415	8.6%

Disability	%
Any disability	14.4%
Under 18	4.6%
18–64 years	13.8%
65 and over	41.6%

Health insurance coverage

Type	%
Private insurance	60.1%
Public insurance	36.8%
Uninsured under 19	9.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	68,291	92.5%
Spanish	5,756	8.3%
Other Indo-European	5,604	8.1%
Asian & Pacific Islander	2	0.0%
Other languages	112	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	65,626	89.1%
Born in same state	64,437	87.6%
Born in different state	33,940	46.1%
Foreign born	1,189	1.6%
Naturalized citizen	8,188	10.9%
Not a US citizen	3,421	45.1%

Ancestry

Ancestry	Count	%
French	10,042	13.6%
Italian	5,558	7.5%
Arab	3,669	5%
English	1,418	1.9%
Polish	1,282	1.7%

Ancestry	Count	%
Dutch	762	1%
Irish	365	0.5%
German	349	0.5%
Norwegian	102	0.1%

Technology access

Metric	% of households
Computer access	32.9%
Internet access	95.3%

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

Frequently asked questions

What ZIP codes does Caldwell, ID have?

Caldwell, ID has 2 ZIP codes: 83605, 83607. Each ZIP code serves a distinct delivery area within the city and surrounding region.

What is the main ZIP code for Caldwell, ID?

The primary ZIP code for Caldwell, ID is 83605. The city uses area code 208 for phone service.

What county is Caldwell, ID in?

Caldwell is located in Canyon County, Idaho.

How many ZIP codes are in Caldwell, ID?

Caldwell, ID has 2 ZIP codes.

What ZIP code is the College of Idaho located in within Caldwell?

The College of Idaho, one of Caldwell's most prominent landmarks, is located in the 83605 ZIP code area in the heart of the city.

Which ZIP code covers downtown Caldwell and the historic Main Street area?

Downtown Caldwell and the historic Main Street district are primarily served by the 83605 ZIP code, which is the central business district of the city.