Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/85728

85728

ZIP 85728 is in Tucson, Arizona, in Pima County; area code 520; Mountain Standard Time all year. Tucson has 54 ZIP codes in all.

Type
No street area
Time zone
America/Phoenix
County
Pima
Metro area
Tucson, AZ
Coordinates
32.2217, -110.9265

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 85716, whose figures describe that area — not this ZIP code.

☼ Live from 85728 — Tucson, AZ

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Where 85728 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 85728
  • 🔢 Type 85728 into a pocket calculator and turn it upside down: BZLSB — not quite a word, sorry.
  • ➕ As a number, 85,728 = 2 × 2 × 2 × 2 × 2 × 3 × 19 × 47. Its digits add up to 30, a total 1,024 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10100111011100000
  • 🏠 Its numerical neighbours: 85726 (Tucson, AZ, 2 mi away) and 85730 (Tucson, AZ, 12 mi away).
  • 🔄 Backwards, 85728 becomes 82758, which is not a ZIP code at all.
  • 👥 22 other ZIP codes are made of exactly the same digits (25878, 27588, 27858, 27885, 28578, 28587, …). The farthest-flung twin is 27885 in Swanquarter, NC, 1,993 miles away.
  • 🧭 Farther south than 87% of all ZIP codes, and farther west than 86%.
  • 🎯866 miles southwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 85728 and you would come out at 32.22°S, 69.07°E — 1,098 miles from Port Louis, Mauritius, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 16m of daylight. Shortest: 10h 02m.
🌙 The sky over 85728 today
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🌋 Shake report
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Source: USGS.

Business and tax activity

Business establishments11This ZIP11
Employees29This ZIP29
Annual payroll$1,083,000This ZIP$1,083,000

Land area

ZIP codes near 85728

ZIPCityDistance
85702 Tucson, AZ 0.0 mi
85703 Tucson, AZ 0.0 mi
85717 Tucson, AZ 0.0 mi
85720 Tucson, AZ 0.0 mi
85722 Tucson, AZ 0.0 mi
85725 Tucson, AZ 0.0 mi
85731 Tucson, AZ 0.0 mi
85732 Tucson, AZ 0.0 mi
85733 Tucson, AZ 0.0 mi
85740 Tucson, AZ 0.0 mi

Find every ZIP code within 10 miles of 85728 →

Questions about this ZIP code

Where is ZIP code 85728?

85728 is in Tucson, Arizona, in Pima County, part of the Tucson, AZ metropolitan area. Its published point location is 32.2217, -110.9265.

What county is 85728 in?

85728 lies in Pima County.

What area code is 85728?

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

What time zone is 85728 in?

85728 uses America/Phoenix.

What ZIP codes are near 85728?

The closest are 85702 (0 mi), 85703 (0 mi), 85717 (0 mi), 85720 (0 mi) and 85722 (0 mi).

Is 85728 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “85728 ZIP Code — Tucson, Arizona (Pima County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/85728

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curl https://zipcodes.pro/zip/85728.json

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