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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/85203

85203

ZIP 85203 is in Mesa, Arizona, in Maricopa County; Mountain Standard Time all year. Mesa has 19 ZIP codes in all.

Type
Standard
Time zone
America/Phoenix
County
Maricopa
Population
38,035
Coordinates
33.4504, -111.8029
☼ Live from 85203 — Mesa, AZ

Weather right now

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Local time: —

Where 85203 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 85203
  • 🔢 Type 85203 into a pocket calculator and turn it upside down: EOZSB — not quite a word, sorry.
  • ➕ As a number, 85,203 = 3 × 3 × 9467. Its digits add up to 18, a total 2,332 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100110011010011
  • 🏠 Its numerical neighbours: 85202 (Mesa, AZ, 6 mi away) and 85204 (Mesa, AZ, 4 mi away).
  • 🔄 Backwards, 85203 becomes 30258 — and that is a real ZIP code: Molena, GA, 1,576 miles away.
  • 👥 64 other ZIP codes are made of exactly the same digits (02358, 02538, 02835, 03258, 03285, 03582, …). The farthest-flung twin is 02538 in East Wareham, MA, 2,302 miles away.
  • 🧭 Farther south than 82% of all ZIP codes, and farther west than 87%.
  • 🎯854 miles southwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 85203 and you would come out at 33.45°S, 68.20°E — 1,103 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 22m of daylight. Shortest: 9h 56m.
  • 📏 At 9.3 square miles of land, 85203 is bigger than 26% of ZIP codes — room for about 7.0 Central Parks.
🌙 The sky over 85203 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population38,035This ZIP38,035
Households13,337This ZIP13,337
Housing units14,112This ZIP14,112
Median age33.2This ZIP33.2Arizona39.0US 38.9
Median household income$73,578This ZIP$73,578Arizona$79,964US $80,734
Median home value$439,100This ZIP$439,100Arizona$394,500US $332,700
Median gross rent$1,534This ZIP$1,534Arizona$1,543US $1,413
Bachelor's degree or higher28.4%This ZIP28.4%
Mean commute24.9 minThis ZIP24.9 min
Population density4,107.9 / sq miThis ZIP4,107.9 / sq mi

Business and tax activity

Business establishments798This ZIP798
Employees7,037This ZIP7,037
Annual payroll$313,364,000This ZIP$313,364,000
Tax returns filed15,930This ZIP15,930
Total adjusted gross income$1,153,975,000This ZIP$1,153,975,000

Land area

Land area9.26 sq miThis ZIP9.26 sq mi
Water area0.61 sq miThis ZIP0.61 sq mi

Other place names in 85203

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

ZIP codes near 85203

ZIPCityDistance
85213 Mesa, AZ 2.1 mi
85211 Mesa, AZ 2.3 mi
85201 Mesa, AZ 3.0 mi
85214 Mesa, AZ 3.1 mi
85216 Mesa, AZ 3.1 mi
85274 Mesa, AZ 3.1 mi
85275 Mesa, AZ 3.1 mi
85277 Mesa, AZ 3.1 mi
85204 Mesa, AZ 3.9 mi
85256 Scottsdale, AZ 3.9 mi

Find every ZIP code within 10 miles of 85203 →

Questions about this ZIP code

Where is ZIP code 85203?

85203 is in Mesa, Arizona, in Maricopa County, part of the Phoenix-Mesa-Chandler, AZ metropolitan area. Its published point location is 33.4504, -111.8029.

What county is 85203 in?

85203 lies in Maricopa County.

What time zone is 85203 in?

85203 uses America/Phoenix.

How many people live in 85203?

About 38,035 people live in ZIP code 85203, in 13,337 households, at 4,107.9 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 85203?

$73,578 a year, against $79,964 across Arizona.

What ZIP codes are near 85203?

The closest are 85213 (2.1 mi), 85211 (2.3 mi), 85201 (3 mi), 85214 (3.1 mi) and 85216 (3.1 mi).

Is 85203 a PO Box ZIP code?

85203 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “85203 ZIP Code — Mesa, Arizona (Maricopa County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/85203

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