Ajo ZIP Code List — Pima County, AZ

There is one unique ZIP code in Ajo, Arizona and it is 85321. Area code: 520.

ZIP codes

1,343.78

sq mi land

0.06

sq mi water

520

area code

Ajo, AZ ZIP code map

About Ajo, AZ

Ajo, Arizona, is a small yet vibrant community located in the southern part of the state. Nestled within Pima County, Ajo boasts a unique blend of rich history and scenic landscapes. This charming town is known for its distinctive Sonoran Desert environment and welcoming atmosphere.

Location & geography

Positioned approximately 35 miles northwest of the bustling city of Tucson, Ajo is surrounded by breathtaking desert terrain. The town is bordered by several notable landmarks, including the Organ Pipe Cactus National Monument to the south. Ajo spans a total land area of 1,343.78 square miles, with a minimal water area of 0.06 square miles.

Community & economy

The community of Ajo is characterized by its close-knit atmosphere and strong sense of heritage, often highlighted in local events. Historically, Ajo thrived on industries such as mining and agriculture, which have shaped the local economy. Daily life in Ajo reflects a slower pace, where residents enjoy outdoor activities and community gatherings.

Transportation

Ajo is accessible via State Route 85, which connects the town to nearby regions and major highways. The nearest named airport is the Tucson International Airport, located about 35 miles away. Public transit options are limited, enhancing the town's tranquil, small-town feel.

History

Ajo was established in the late 19th century, primarily during the copper mining boom that attracted many settlers to the region. The town’s early economy was heavily reliant on mining, which influenced its development and culture. Over the years, Ajo has witnessed various events, including the establishment of the first school in 1885, marking a significant milestone in its community history.

Did you know?

A surprising fact about Ajo is that it served as home to one of the first copper mines in Arizona, which played a critical role in the mining industry of the West. Additionally, the town is known for its stunning murals, which reflect its artistic spirit and cultural heritage.

ZIP codes for Ajo, AZ (1)

ZIP code	City	County	Map
85321	Ajo	Pima	View map

Demographics & statistics

3,621

Population

56.7

Median age

$43,309

Median household income

$27,997

Per capita income

$108,100

Median home value

$742

Median monthly rent

71.4%

Home ownership

20.3%

Poverty rate

12.8%

Unemployment

1,930

Housing units

29.3%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

147

20–24

177

218

25–34

263

163

35–44

196

45–54

55–59

113

167

60–64

201

277

65–74

334

222

75–84

268

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	426	11.8%
18 and over	3,195	88.2%
65 and over	1,270	35.1%
Median age	56.7 years

Race & ethnicity

White 53.4%

American Indian / Alaska Native 19.3%

Two or more races 13%

Hispanic or Latino 11.7%

Other race 2%

Asian 0.5%

Black or African American 0.1%

Group	Count	%
White	2,191	53.4%
American Indian / Alaska Native	793	19.3%
Two or more races	533	13%
Hispanic or Latino	482	11.7%
Other race	81	2%
Asian	20	0.5%
Black or African American	3	0.1%

Household income

Under $10k 4.1%

$10k–$15k 11.8%

$15k–$25k 13.4%

$25k–$35k 10.2%

$35k–$50k 20.1%

$50k–$75k 14.5%

$75k–$100k 7.4%

$100k–$150k 15.5%

$150k–$200k 0.7%

$200k+ 2.4%

Range	% of households
Under $10k	4.1%
$10k–$15k	11.8%
$15k–$25k	13.4%
$25k–$35k	10.2%
$35k–$50k	20.1%
$50k–$75k	14.5%
$75k–$100k	7.4%
$100k–$150k	15.5%
$150k–$200k	0.7%
$200k+	2.4%
Median income	$43,309

Housing

Home values

Under $50k 12.6%

$50k–$100k 30.5%

$100k–$150k 27.9%

$150k–$200k 13.9%

$200k–$300k 11.6%

$300k–$500k 1.0%

$1M+ 2.6%

Housing overview

Metric	Value
Median home value	$108,100
Median rent / month	$742
Owner occupied	71.4%
Renter occupied	28.6%
Vacant	28.4%
Single-family detached	81.5%
Large apartment buildings	3.8%
Mobile homes	11.7%
Median rooms	4.7
Avg household size (owned)	2.16

Year built

Era	%
2020 or later	0.0%
2010–2019	2.7%
2000–2009	3.6%
1990–1999	9.1%
1980–1989	8.0%
1970–1979	15.5%
1960–1969	14.7%
1950–1959	14.8%
1940–1949	16.9%
1939 or earlier	14.7%

Bedrooms

Size	% of units
No bedroom (studio)	4.6%
1 bedroom	13.2%
2 bedrooms	37.6%
3 bedrooms	41.0%
4 bedrooms	2.8%
5+ bedrooms	0.8%

Vehicles per household

Vehicles	% of households
No vehicle	16.1%
1 vehicle	36.2%
2 vehicles	30.3%
3 or more	17.4%

Heating fuel

Fuel type	%
Utility gas	39.1%
Electricity	53.5%
Propane / LP gas	4.4%
Wood	2.1%
Solar	0.2%
No fuel used	0.7%

Households & families

Household type	Count	%
Married-couple family	587	33.8%
Cohabiting couple	194	11.2%
Male householder, no spouse	264	15.2%
Female householder, no spouse	692	39.8%
Households with children under 18	265	15.3%
Households with seniors (65+)	951	54.7%
Average household size	2.07

Marital status

Status	Male	Female
Never married	41.2%	38.8%
Married	42.3%	33.4%
Separated	0.0%	1.9%
Widowed	5.6%	13.6%
Divorced	10.9%	12.2%

Education

Less than 9th grade 3.5%

Some HS, no diploma 6.5%

HS graduate 27.7%

Some college, no degree 26.8%

Associate's degree 6.2%

Bachelor's degree 20.8%

Graduate / professional 8.5%

Metric	%
HS diploma or higher	90.0%
Bachelor's or higher	29.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	38	6.0%
Kindergarten	14	2.2%
Elementary school	228	36.2%
High school	133	21.1%
College / grad school	216	34.3%

Employment

Industry of employment

Education & healthcare 22.6%

Arts, food & hospitality 19.4%

Transportation & utilities 10.7%

Public administration 10.6%

Information 9.8%

Professional & management 9.5%

Finance & real estate 5.6%

Retail trade 4.1%

Construction 3.7%

Other services 3.3%

Manufacturing 0.8%

Occupation

Category	%
Management, business & arts	41.6%
Service	23.9%
Sales & office	24.4%
Natural resources & construction	4.4%
Production & transportation	5.7%

Employment type

Type	%
Private sector	49.7%
Government	44.6%
Self-employed	5.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	66.9%
Carpool	12.7%
Public transit	0.0%
Walk	7.1%
Other means	8.4%
Avg commute (minutes)	19.0

Poverty

All people 20.3%

Under 18 years 21.3%

18 and over 20.2%

Married-couple families 6.0%

Female-led households 36.1%

Income support

Source	% of households
Social Security	53.4%
Retirement income	41.5%
Supplemental Security	9.9%
Cash public assistance	1.8%
Food stamps / SNAP	18.7%

Health indicators

Condition	%
High blood pressure	41.8%
High cholesterol	37.4%
Heart disease	10.9%
Stroke	5.6%
Asthma	12.4%
Arthritis	33.8%
Kidney disease	5.4%
Pulmonary disease	11.5%
Cancer	8.4%

Behavior / access	%
Binge drinking	12.7%
No physical activity	32.5%
Less than 7 hrs sleep	35.6%
Fair or poor health	25.9%
Poor mental health	16.8%
Poor physical health	16.9%
No health insurance	19.9%
Visited doctor (checkup)	76.4%
Visited dentist	47.7%
Cholesterol screening	89.4%
Teeth loss	20.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	529	16.6%

Disability	%
Any disability	29.1%
Under 18	8.2%
18–64 years	16.9%
65 and over	54.6%

Health insurance coverage

Type	%
Private insurance	57.5%
Public insurance	60.9%
Uninsured under 19	2.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,576	98.8%
Spanish	111	3.1%
Other Indo-European	68	1.9%
Asian & Pacific Islander	0	0.0%
Other languages	20	0.6%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,461	95.6%
Born in same state	3,402	94.0%
Born in different state	1,630	45.0%
Foreign born	59	1.6%
Naturalized citizen	160	4.4%
Not a US citizen	109	68.1%

Ancestry

Ancestry	Count	%
French	491	13.6%
Italian	261	7.2%
Arab	213	5.9%

Ancestry	Count	%
Polish	32	0.9%
English	17	0.5%
Dutch	14	0.4%

Technology access

Metric	% of households
Computer access	48.0%
Internet access	79.9%

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

Frequently asked questions

What is the ZIP code for Ajo, AZ?

Ajo, AZ has one ZIP code: 85321.

What is the main ZIP code for Ajo, AZ?

The primary ZIP code for Ajo, AZ is 85321. The city uses area code 520 for phone service.

What county is Ajo, AZ in?

Ajo is located in Pima County, Arizona.

How many ZIP codes are in Ajo, AZ?

Ajo, AZ has 1 ZIP code.

What ZIP code serves the historic downtown Ajo area and the town's central district around the Plaza Mayor?

The downtown Ajo area, including the historic Plaza Mayor and surrounding commercial district, is located in ZIP code 85321, which encompasses the entire town of Ajo.

What is the ZIP code for the Ajo Mine area and the historic mining district in Pima County?

The former Ajo Mine area and the historic mining district are located in ZIP code 85321, as this is the only ZIP code serving Ajo, Arizona.