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ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/85140

85140

ZIP 85140 is in San Tan Valley, Arizona, in Pinal County; area code 520; Mountain Standard Time all year. San Tan Valley has 3 ZIP codes; the others are 85143 and 85144.

Type
Standard
Time zone
America/Phoenix
County
Pinal
Population
51,260
Coordinates
33.2481, -111.4892
☼ Live from 85140 — San Tan Valley, AZ

Weather right now

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NEXRAD radar
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Local time: —

Where 85140 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 85140
  • 🔢 Type 85140 into a pocket calculator and turn it upside down: OhISB — not quite a word, sorry.
  • ➕ As a number, 85,140 = 2 × 2 × 3 × 3 × 5 × 11 × 43. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100110010010100
  • 🏠 Its numerical neighbours: 85139 (Maricopa, AZ, 47 mi away) and 85141 (Picacho, AZ, 42 mi away).
  • 🔄 Backwards, 85140 becomes 04158, which is not a ZIP code at all.
  • 👥 59 other ZIP codes are made of exactly the same digits (01845, 01854, 04851, 05148, 05481, 05841, …). The farthest-flung twin is 04851 in Matinicus, ME, 2,387 miles away.
  • 🧭 Farther south than 83% of all ZIP codes, and farther west than 86%.
  • 🎯847 miles southwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 85140 and you would come out at 33.25°S, 68.51°E — 1,116 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 21m of daylight. Shortest: 9h 57m.
  • 📏 At 82.4 square miles of land, 85140 is bigger than 73% of ZIP codes — room for about 63 Central Parks.
🌙 The sky over 85140 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population51,260This ZIP51,260
Households16,120This ZIP16,120
Housing units17,208This ZIP17,208
Median age34.6This ZIP34.6Arizona39.0US 38.9
Median household income$101,477This ZIP$101,477Arizona$79,964US $80,734
Median home value$445,000This ZIP$445,000Arizona$394,500US $332,700
Median gross rent$2,062This ZIP$2,062Arizona$1,543US $1,413
Bachelor's degree or higher30.1%This ZIP30.1%
Mean commute36.8 minThis ZIP36.8 min
Population density622.1 / sq miThis ZIP622.1 / sq mi

Business and tax activity

Business establishments532This ZIP532
Employees4,452This ZIP4,452
Annual payroll$213,627,000This ZIP$213,627,000
Tax returns filed21,170This ZIP21,170
Total adjusted gross income$1,704,228,000This ZIP$1,704,228,000

Land area

Land area82.39 sq miThis ZIP82.39 sq mi
Water area0.00 sq mi

Other place names in 85140

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 85140

ZIPCityDistance
85144 San Tan Valley, AZ 4.5 mi
85143 San Tan Valley, AZ 6.6 mi
85212 Mesa, AZ 9.6 mi
85119 Apache Junction, AZ 9.6 mi
85120 Apache Junction, AZ 10.5 mi
85118 Gold Canyon, AZ 10.5 mi
85117 Apache Junction, AZ 10.9 mi
85142 Queen Creek, AZ 10.9 mi
85178 Apache Junction, AZ 11.3 mi
85127 Chandler Heights, AZ 12.3 mi

Find every ZIP code within 10 miles of 85140 →

Questions about this ZIP code

Where is ZIP code 85140?

85140 is in San Tan Valley, Arizona, in Pinal County, part of the Phoenix-Mesa-Chandler, AZ metropolitan area. Its published point location is 33.2481, -111.4892.

What county is 85140 in?

85140 lies in Pinal County.

What area code is 85140?

San Tan Valley uses area code 520, from NANPA's telephone records.

What time zone is 85140 in?

85140 uses America/Phoenix.

How many people live in 85140?

About 51,260 people live in ZIP code 85140, in 16,120 households, at 622.1 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 85140?

$101,477 a year, against $79,964 across Arizona.

What ZIP codes are near 85140?

The closest are 85144 (4.5 mi), 85143 (6.6 mi), 85212 (9.6 mi), 85119 (9.6 mi) and 85120 (10.5 mi).

Is 85140 a PO Box ZIP code?

85140 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “85140 ZIP Code — San Tan Valley, Arizona (Pinal County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/85140

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