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/61555

61555

ZIP 61555 is in Pekin, Illinois, in Tazewell County; area codes 309 and 861; Central time. Pekin has 3 ZIP codes; the others are 61554 and 61558.

Type
No street area
Time zone
America/Chicago
County
Tazewell
Metro area
Peoria, IL
Coordinates
40.5607, -89.6502

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 61554, whose figures describe that area — not this ZIP code.

☼ Live from 61555 — Pekin, IL

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Where 61555 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 61555
  • 🔢 Type 61555 into a pocket calculator and turn it upside down: SSSIg — not quite a word, sorry.
  • ➕ As a number, 61,555 = 5 × 13 × 947. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111000001110011
  • 🏠 Its numerical neighbours: 61554 (Pekin, IL, 2 mi away) and 61558 (Pekin, IL, 1 mi away).
  • 🔄 Backwards, 61555 becomes 55516, which is not a ZIP code at all.
  • 👥 9 other ZIP codes are made of exactly the same digits (15565, 15655, 51556, 51565, 55165, 55615, …). The farthest-flung twin is 15565 in West Salisbury, PA, 559 miles away.
  • 🧭 Farther north than 61% of all ZIP codes, and farther west than 55%.
  • 🎯474 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 61555 and you would come out at 40.56°S, 90.35°E — 1,151 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 05m of daylight. Shortest: 9h 16m.
🌙 The sky over 61555 today
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🌋 Shake report
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Source: USGS.

Business and tax activity

Business establishments10This ZIP10
Employees177This ZIP177
Annual payroll$9,695,000This ZIP$9,695,000

Land area

ZIP codes near 61555

ZIPCityDistance
61558 Pekin, IL 0.7 mi
61554 Pekin, IL 2.0 mi
61547 Mapleton, IL 3.8 mi
61564 South Pekin, IL 4.3 mi
61607 Peoria, IL 4.9 mi
61641 Peoria, IL 5.5 mi
61539 Kingston Mines, IL 5.9 mi
61610 Creve Coeur, IL 6.2 mi
61535 Groveland, IL 7.1 mi
61605 Peoria, IL 8.1 mi

Find every ZIP code within 10 miles of 61555 →

Questions about this ZIP code

Where is ZIP code 61555?

61555 is in Pekin, Illinois, in Tazewell County, part of the Peoria, IL metropolitan area. Its published point location is 40.5607, -89.6502.

What county is 61555 in?

61555 lies in Tazewell County.

What area code is 61555?

Pekin uses area codes 309 and 861, from NANPA's telephone records.

What time zone is 61555 in?

61555 uses America/Chicago.

What ZIP codes are near 61555?

The closest are 61558 (0.7 mi), 61554 (2 mi), 61547 (3.8 mi), 61564 (4.3 mi) and 61607 (4.9 mi).

Is 61555 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. “61555 ZIP Code — Pekin, Illinois (Tazewell County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61555

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curl https://zipcodes.pro/zip/61555.json

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