85140 ZIP Code — San Tan Valley, AZ

Pinal County, Arizona

ZIP code 85140 is located in San Tan Valley, Arizona, within Pinal County. It covers approximately 82.39 square miles and serves a population of 48,743 residents. This is a standard ZIP code in the Mountain (MT) — no DST timezone, served by area code 480/520.

About ZIP code 85140

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $350,700. Owner-occupancy is high at 83%, well above the national average.

Median household income is $91,374. 31% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. An above-average commute of 37 minutes suggests many residents work outside the immediate area.

Educational attainment is near the national average, with 28% of residents holding a bachelor's degree or higher.

Overall, ZIP code 85140 reflects a community defined by high homeownership and a significant Social Security-dependent population.

48,743

population

82.39

sq mi land

Standard

ZIP type

Mountain (MT) — no DST

timezone

85140 ZIP code map

Cities in ZIP code 85140

Below are the cities the US Postal Service accepts for ZIP code 85140. Using any city not on this list may result in mail delivery delays.

City	Status
San Tan Valley	Acceptable
San Tan Valley	Preferred

Nearby ZIP codes

85142 Queen Creek (6.5 mi) 85212 Mesa (8.3 mi) 85143 San Tan Valley (9.2 mi) 85118 Gold Canyon (9.4 mi) 85209 Mesa (10.8 mi) 85298 Gilbert (11.5 mi) 85120 Apache Junction (11.8 mi) 85119 Apache Junction (12.1 mi) 85297 Gilbert (12.2 mi) 85208 Mesa (12.5 mi) 85295 Gilbert (13 mi) 85296 Gilbert (14.4 mi)

Demographics updated 05/2026

Population
Total population	48,743
Population density	592 / sq mi
State FIPS	04
County FIPS	021

Geography
Land area	82.39 sq mi
Water area	0.00 sq mi
Latitude	33.2455
Longitude	-111.5302
Timezone	Mountain (MT) — no DST
Area code	480/520

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	28.5%	42.0%	40.6%
$50k – $100k	36.9%	34.4%	31.9%
$100k – $200k	27.7%	20.0%	21.1%
Over $200k	6.9%	3.6%	6.4%

Demographics & statistics

48,743

Population

592

People per sq mi

34.3

Median age

$91,374

Median household income

$37,283

Per capita income

$350,700

Median home value

$1,766

Median monthly rent

82.9%

Home ownership

7.7%

Poverty rate

4.3%

Unemployment

13,845

Housing units

27.5%

Bachelor's or higher

Age distribution

Male Female

1,440

Under 5

1,499

2,230

5–9

2,321

2,331

10–14

2,426

1,908

15–19

1,986

1,265

20–24

1,316

2,984

25–34

3,105

3,588

35–44

3,734

2,479

45–54

2,579

1,126

55–59

1,171

1,277

60–64

1,328

2,272

65–74

2,364

836

75–84

869

151

85+

158

← Male

Female →

Age summary

Group	Count	%
Under 18	14,710	30.2%
18 and over	34,033	69.8%
65 and over	6,650	13.6%
Median age	34.3 years

Race & ethnicity

White 69.7%

Hispanic or Latino 9.1%

Two or more races 7%

Other race 5.5%

Black or African American 3.1%

American Indian / Alaska Native 3.1%

Asian 2.1%

Native Hawaiian / Pacific Islander 0.3%

Group	Count	%
White	37,383	69.7%
Hispanic or Latino	4,862	9.1%
Two or more races	3,760	7%
Other race	2,967	5.5%
Black or African American	1,658	3.1%
American Indian / Alaska Native	1,648	3.1%
Asian	1,149	2.1%
Native Hawaiian / Pacific Islander	178	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	28.5%	42.0%	40.6%
$50k – $100k	36.9%	34.4%	31.9%
$100k – $200k	27.7%	20.0%	21.1%
Over $200k	6.9%	3.6%	6.4%

Under $10k 1.7%

$10k–$15k 1.7%

$15k–$25k 4.1%

$25k–$35k 3.1%

$35k–$50k 8.8%

$50k–$75k 18.7%

$75k–$100k 16.2%

$100k–$150k 25.2%

$150k–$200k 8.8%

$200k+ 11.7%

Range	% of households
Under $10k	1.7%
$10k–$15k	1.7%
$15k–$25k	4.1%
$25k–$35k	3.1%
$35k–$50k	8.8%
$50k–$75k	18.7%
$75k–$100k	16.2%
$100k–$150k	25.2%
$150k–$200k	8.8%
$200k+	11.7%
Median income	$91,374

Housing

Home values

Under $50k 3.6%

$50k–$100k 1.6%

$100k–$150k 1.8%

$150k–$200k 2.3%

$200k–$300k 28.4%

$300k–$500k 41.6%

$500k–$1M 17.5%

$1M+ 3.1%

Housing overview

Metric	Value
Median home value	$350,700
Median rent / month	$1,766
Owner occupied	82.9%
Renter occupied	17.1%
Vacant	5.1%
Single-family detached	91.5%
Large apartment buildings	0.0%
Mobile homes	6.3%
Median rooms	6.2
Avg household size (owned)	3.02

Year built

Era	%
2020 or later	4.0%
2010–2019	30.4%
2000–2009	54.5%
1990–1999	5.1%
1980–1989	1.6%
1970–1979	3.3%
1960–1969	0.9%
1950–1959	0.2%
1940–1949	0.0%
1939 or earlier	0.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.0%
2 bedrooms	13.3%
3 bedrooms	36.5%
4 bedrooms	39.4%
5+ bedrooms	9.8%

Vehicles per household

Vehicles	% of households
No vehicle	2.1%
1 vehicle	25.9%
2 vehicles	42.9%
3 or more	29.1%

Heating fuel

Fuel type	%
Utility gas	38.3%
Electricity	57.0%
Propane / LP gas	3.3%
Fuel oil	0.1%
Solar	0.7%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	10,266	65.5%
Cohabiting couple	1,035	6.6%
Male householder, no spouse	1,557	9.9%
Female householder, no spouse	2,812	17.9%
Households with children under 18	6,752	43.1%
Households with seniors (65+)	4,528	28.9%
Average household size	3.11

Marital status

Status	Male	Female
Never married	27.4%	26.8%
Married	62.1%	55.6%
Separated	0.6%	1.3%
Widowed	0.9%	4.9%
Divorced	9.0%	11.5%

Education

Less than 9th grade 3.3%

Some HS, no diploma 3.7%

HS graduate 25.7%

Some college, no degree 26.8%

Associate's degree 12.9%

Bachelor's degree 19.1%

Graduate / professional 8.5%

Metric	%
HS diploma or higher	93.0%
Bachelor's or higher	27.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	605	4.2%
Kindergarten	960	6.7%
Elementary school	7,198	50.1%
High school	3,489	24.3%
College / grad school	2,112	14.7%

Employment

Industry of employment

Education & healthcare 22.2%

Professional & management 11.6%

Retail trade 11.4%

Construction 8.5%

Manufacturing 8.2%

Finance & real estate 7.9%

Transportation & utilities 7.7%

Arts, food & hospitality 7.5%

Other services 5.3%

Public administration 4.8%

Wholesale trade 2.7%

Information 1.4%

Agriculture & mining 0.7%

Occupation

Category	%
Management, business & arts	40.7%
Service	16.3%
Sales & office	21.9%
Natural resources & construction	10.5%
Production & transportation	10.5%

Employment type

Type	%
Private sector	82.1%
Government	11.9%
Self-employed	5.3%
Unpaid family workers	0.7%

Commute

Method	%
Drive alone	75.5%
Carpool	7.8%
Public transit	0.3%
Walk	1.0%
Work from home	14.1%
Other means	1.3%
Avg commute (minutes)	36.5

Poverty

All people 7.7%

Under 18 years 13.1%

18 and over 5.4%

Married-couple families 2.7%

Female-led households 26.7%

Income support

Source	% of households
Social Security	30.5%
Retirement income	23.1%
Supplemental Security	4.2%
Cash public assistance	2.4%
Food stamps / SNAP	9.0%

Health indicators

Condition	%
Obesity	34.1%
High blood pressure	21.9%
High cholesterol	26.8%
Diabetes	6.8%
Heart disease	3.6%
Stroke	1.8%
Asthma	10.9%
Arthritis	16.7%
Kidney disease	1.9%
Pulmonary disease	4.5%
Cancer	3.9%

Behavior / access	%
Smoking	18.6%
Binge drinking	19.0%
No physical activity	20.3%
Less than 7 hrs sleep	37.2%
Depression	21.7%
Fair or poor health	11.3%
Poor mental health	16.4%
Poor physical health	8.7%
No health insurance	16.1%
Visited doctor (checkup)	68.9%
Visited dentist	56.7%
Cholesterol screening	85.8%
Teeth loss	11.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	2,836	8.3%

Disability	%
Any disability	11.5%
Under 18	5.5%
18–64 years	10.0%
65 and over	31.3%

Health insurance coverage

Type	%
Private insurance	68.1%
Public insurance	32.9%
No insurance	9.2%
Uninsured under 19	7.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	45,804	94.0%
Spanish	1,629	3.6%
Other Indo-European	903	2.0%
Asian & Pacific Islander	123	0.3%
Other languages	468	1.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	45,291	92.9%
Born in same state	44,955	92.2%
Born in different state	20,193	41.4%
Foreign born	336	0.7%
Naturalized citizen	3,452	7.1%
Not a US citizen	1,717	49.7%

Ancestry

Ancestry	Count	%
French	4,743	9.7%
Italian	4,219	8.7%
Arab	2,223	4.6%
Polish	744	1.5%
German	460	0.9%

Ancestry	Count	%
Dutch	454	0.9%
Irish	378	0.8%
English	335	0.7%
Norwegian	33	0.1%

Technology access

Metric	% of households
Computer access	32.1%
Internet access	99.5%

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

Frequently asked questions about ZIP code 85140

What city is ZIP code 85140 in?

ZIP code 85140 is primarily assigned to San Tan Valley, Arizona.

What county is ZIP code 85140 in?

ZIP code 85140 falls within Pinal County, Arizona.

Is ZIP code 85140 family-oriented?

30% of residents in ZIP code 85140 are under 18, reflecting a younger, family-oriented community.

Is ZIP code 85140 mostly owner-occupied?

83% of occupied units in ZIP code 85140 are owner-occupied, well above the national average.

What is the typical home value in ZIP code 85140?

The median home value in ZIP code 85140 is $350,700.

What is the population of ZIP code 85140?

ZIP code 85140 has an estimated population of 48,743 residents, with a density of 592 people per square mile.

What timezone is ZIP code 85140 in?

ZIP code 85140 observes the MST timezone.