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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/85131

85131

ZIP 85131 is Eloy, Arizona, in Pinal County; area code 520; Mountain Standard Time all year.

Type
Standard
Time zone
America/Phoenix
County
Pinal
Population
18,794
Coordinates
32.6538, -111.5771
☼ Live from 85131 — Eloy, AZ

Weather right now

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Local time: —

Where 85131 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 85131
  • 🔢 Type 85131 into a pocket calculator and turn it upside down: IEISB — not quite a word, sorry.
  • ➕ As a number, 85,131 = 3 × 3 × 3 × 3 × 1051. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100110010001011
  • 🏠 Its numerical neighbours: 85130 (Casa Grande, AZ, 13 mi away) and 85132 (Florence, AZ, 28 mi away).
  • 🔄 Backwards, 85131 becomes 13158 — and that is a real ZIP code: Truxton, NY, 2,049 miles away.
  • 👥 22 other ZIP codes are made of exactly the same digits (11358, 11385, 11853, 13158, 13815, 13851, …). The farthest-flung twin is 11853 in Jericho, NY, 2,162 miles away.
  • 🧭 Farther south than 86% of all ZIP codes, and farther west than 86%.
  • 🎯876 miles southwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 85131 and you would come out at 32.65°S, 68.42°E — 1,095 miles from Port Louis, Mauritius, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 18m of daylight. Shortest: 10h 00m.
  • 📏 At 306.7 square miles of land, 85131 is bigger than 95% of ZIP codes — room for about 233 Central Parks.
🌙 The sky over 85131 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population18,794This ZIP18,794
Households4,838This ZIP4,838
Housing units5,538This ZIP5,538
Median age40.7This ZIP40.7Arizona39.0US 38.9
Median household income$56,576This ZIP$56,576Arizona$79,964US $80,734
Median home value$259,200This ZIP$259,200Arizona$394,500US $332,700
Median gross rent$981This ZIP$981Arizona$1,543US $1,413
Bachelor's degree or higher12.9%This ZIP12.9%
Mean commute28.6 minThis ZIP28.6 min
Population density61.3 / sq miThis ZIP61.3 / sq mi

Business and tax activity

Business establishments119This ZIP119
Employees3,018This ZIP3,018
Annual payroll$154,597,000This ZIP$154,597,000
Tax returns filed5,150This ZIP5,150
Total adjusted gross income$295,321,000This ZIP$295,321,000

Land area

Land area306.72 sq miThis ZIP306.72 sq mi
Water area0.28 sq miThis ZIP0.28 sq mi

Other place names in 85131

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

ZIP codes near 85131

ZIPCityDistance
85123 Arizona City, AZ 7.2 mi
85141 Picacho, AZ 8.3 mi
85145 Red Rock, AZ 13.3 mi
85130 Casa Grande, AZ 13.4 mi
85194 Casa Grande, AZ 17.3 mi
85193 Casa Grande, AZ 18.9 mi
85122 Casa Grande, AZ 20.7 mi
85653 Marana, AZ 20.8 mi
85128 Coolidge, AZ 21.7 mi
85191 Valley Farms, AZ 24.1 mi

Find every ZIP code within 10 miles of 85131 →

Questions about this ZIP code

Where is ZIP code 85131?

85131 is in Eloy, Arizona, in Pinal County, part of the Phoenix-Mesa-Chandler, AZ metropolitan area. Its published point location is 32.6538, -111.5771.

What county is 85131 in?

85131 lies in Pinal County.

What area code is 85131?

Eloy uses area code 520, from NANPA's telephone records.

What time zone is 85131 in?

85131 uses America/Phoenix.

How many people live in 85131?

About 18,794 people live in ZIP code 85131, in 4,838 households, at 61.3 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 85131?

$56,576 a year, against $79,964 across Arizona.

What ZIP codes are near 85131?

The closest are 85123 (7.2 mi), 85141 (8.3 mi), 85145 (13.3 mi), 85130 (13.4 mi) and 85194 (17.3 mi).

Is 85131 a PO Box ZIP code?

85131 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “85131 ZIP Code — Eloy, Arizona (Pinal County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/85131

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