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/73534

73534

ZIP 73534 is in Duncan, Oklahoma, in Stephens County; area code 580; Central time. Duncan has 3 ZIP codes; the others are 73533 and 73536.

Type
No street area
Time zone
America/Chicago
County
Stephens
Metro area
Duncan, OK
Coordinates
34.5189, -97.9733

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 73533, whose figures describe that area — not this ZIP code.

☼ Live from 73534 — Duncan, OK

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Where 73534 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 73534
  • 🔢 Type 73534 into a pocket calculator and turn it upside down: hESEL — not quite a word, sorry.
  • ➕ As a number, 73,534 = 2 × 36767. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10001111100111110
  • 🏠 Its numerical neighbours: 73533 (Duncan, OK, 6 mi away) and 73536 (Duncan, OK, 7 mi away).
  • 🔄 Backwards, 73534 becomes 43537 — and that is a real ZIP code: Maumee, OH, 916 miles away.
  • 👥 23 other ZIP codes are made of exactly the same digits (33475, 33547, 33574, 34753, 35473, 37345, …). The farthest-flung twin is 33475 in Hobe Sound, FL, 1,175 miles away.
  • 🧭 Farther south than 76% of all ZIP codes, and farther west than 77%.
  • 🎯368 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 73534 and you would come out at 34.52°S, 82.03°E — 1,188 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 28m of daylight. Shortest: 9h 50m.
🌙 The sky over 73534 today
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🌋 Shake report
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Source: USGS.

Business and tax activity

Business establishments23This ZIP23
Employees177This ZIP177
Annual payroll$14,061,000This ZIP$14,061,000

Land area

ZIP codes near 73534

ZIPCityDistance
73533 Duncan, OK 6.1 mi
73536 Duncan, OK 7.3 mi
73055 Marlow, OK 9.2 mi
73529 Comanche, OK 12.6 mi
73520 Addington, OK 17.3 mi
73491 Velma, OK 18.2 mi
73082 Rush Springs, OK 18.2 mi
73501 Lawton, OK 18.3 mi
73567 Sterling, OK 19.4 mi
73442 Loco, OK 21.1 mi

Find every ZIP code within 10 miles of 73534 →

Questions about this ZIP code

Where is ZIP code 73534?

73534 is in Duncan, Oklahoma, in Stephens County, part of the Duncan, OK micropolitan area. Its published point location is 34.5189, -97.9733.

What county is 73534 in?

73534 lies in Stephens County.

What area code is 73534?

Duncan uses area code 580, from NANPA's telephone records.

What time zone is 73534 in?

73534 uses America/Chicago.

What ZIP codes are near 73534?

The closest are 73533 (6.1 mi), 73536 (7.3 mi), 73055 (9.2 mi), 73529 (12.6 mi) and 73520 (17.3 mi).

Is 73534 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. “73534 ZIP Code — Duncan, Oklahoma (Stephens County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/73534

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