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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/61734

61734

ZIP 61734 is Delavan, Illinois, in Tazewell County; area code 309; Central time.

Type
Standard
Time zone
America/Chicago
County
Tazewell
Metro area
Peoria, IL
Population
2,443
Coordinates
40.3764, -89.5262
☼ Live from 61734 — Delavan, IL

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Where 61734 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 61734
  • 🔢 Type 61734 into a pocket calculator and turn it upside down: hELIg — not quite a word, sorry.
  • ➕ As a number, 61,734 = 2 × 3 × 10289. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111000100100110
  • 🏠 Its numerical neighbours: 61733 (Deer Creek, IL, 20 mi away) and 61735 (Dewitt, IL, 40 mi away).
  • 🔄 Backwards, 61734 becomes 43716 — and that is a real ZIP code: Beallsville, OH, 451 miles away.
  • 👥 57 other ZIP codes are made of exactly the same digits (13476, 13647, 13674, 13746, 14736, 16347, …). The farthest-flung twin is 34761 in Ocoee, FL, 933 miles away.
  • 🧭 Farther north than 60% of all ZIP codes, and farther west than 55%.
  • 🎯480 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 61734 and you would come out at 40.38°S, 90.47°E — 1,164 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 03m of daylight. Shortest: 9h 17m.
  • 📏 At 76.5 square miles of land, 61734 is bigger than 71% of ZIP codes — room for about 58 Central Parks.
🌙 The sky over 61734 today
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🌋 Shake report
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Source: USGS.

People and housing

Population2,443This ZIP2,443
Households1,001This ZIP1,001
Housing units1,126This ZIP1,126
Median age42.8This ZIP42.8Illinois39.0US 38.9
Median household income$71,435This ZIP$71,435Illinois$83,390US $80,734
Median home value$152,700This ZIP$152,700Illinois$263,300US $332,700
Median gross rent$874This ZIP$874Illinois$1,274US $1,413
Bachelor's degree or higher22.4%This ZIP22.4%
Mean commute28.4 minThis ZIP28.4 min
Population density31.9 / sq miThis ZIP31.9 / sq mi

Business and tax activity

Business establishments34This ZIP34
Employees235This ZIP235
Annual payroll$7,559,000This ZIP$7,559,000
Tax returns filed1,210This ZIP1,210
Total adjusted gross income$88,435,000This ZIP$88,435,000

Land area

Land area76.50 sq miThis ZIP76.50 sq mi
Water area0.02 sq miThis ZIP0.02 sq mi

Other place names in 61734

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

ZIP codes near 61734

ZIPCityDistance
61747 Hopedale, IL 5.5 mi
62635 Emden, IL 6.4 mi
62682 San Jose, IL 7.7 mi
61534 Green Valley, IL 7.8 mi
61568 Tremont, IL 9.5 mi
62643 Hartsburg, IL 10.0 mi
61721 Armington, IL 10.8 mi
61759 Minier, IL 10.9 mi
61564 South Pekin, IL 10.9 mi
61554 Pekin, IL 12.6 mi

Find every ZIP code within 10 miles of 61734 →

Questions about this ZIP code

Where is ZIP code 61734?

61734 is in Delavan, Illinois, in Tazewell County, part of the Peoria, IL metropolitan area. Its published point location is 40.3764, -89.5262.

What county is 61734 in?

61734 lies in Tazewell County.

What area code is 61734?

Delavan uses area code 309, from NANPA's telephone records.

What time zone is 61734 in?

61734 uses America/Chicago.

How many people live in 61734?

About 2,443 people live in ZIP code 61734, in 1,001 households, at 31.9 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 61734?

$71,435 a year, against $83,390 across Illinois.

What ZIP codes are near 61734?

The closest are 61747 (5.5 mi), 62635 (6.4 mi), 62682 (7.7 mi), 61534 (7.8 mi) and 61568 (9.5 mi).

Is 61734 a PO Box ZIP code?

61734 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “61734 ZIP Code — Delavan, Illinois (Tazewell County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61734

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