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/61489

61489

ZIP 61489 is Williamsfield, Illinois, mostly in Knox County; area code 309; Central time.

Type
Standard
Time zone
America/Chicago
County
Knox +1 more
Metro area
Galesburg, IL
Population
820
Coordinates
40.9308, -90.0331
☼ Live from 61489 — Williamsfield, IL

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 61489 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 61489
  • 🔢 Type 61489 into a pocket calculator and turn it upside down: GBhIg — not quite a word, sorry.
  • ➕ As a number, 61,489 = 17 × 3617. Its digits add up to 28, a total 1,520 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111000000110001
  • 🏠 Its numerical neighbours: 61488 (Wataga, IL, 16 mi away) and 61490 (Woodhull, IL, 21 mi away).
  • 🔄 Backwards, 61489 becomes 98416 — and that is a real ZIP code: Tacoma, WA, 1,655 miles away.
  • 👥 32 other ZIP codes are made of exactly the same digits (14869, 16849, 16948, 18469, 18946, 18964, …). The farthest-flung twin is 96841 in Honolulu, HI, 4,129 miles away.
  • 🧭 Farther north than 66% of all ZIP codes, and farther west than 56%.
  • 🎯456 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 61489 and you would come out at 40.93°S, 89.97°E — 1,120 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 07m of daylight. Shortest: 9h 14m.
  • 📏 At 47.1 square miles of land, 61489 is bigger than 58% of ZIP codes — room for about 36 Central Parks.
🌙 The sky over 61489 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population820This ZIP820
Households340This ZIP340
Housing units428This ZIP428
Median age45.6This ZIP45.6Illinois39.0US 38.9
Median household income$98,125This ZIP$98,125Illinois$83,390US $80,734
Median home value$148,500This ZIP$148,500Illinois$263,300US $332,700
Median gross rent$642This ZIP$642Illinois$1,274US $1,413
Bachelor's degree or higher25.1%This ZIP25.1%
Mean commute22.5 minThis ZIP22.5 min
Population density17.4 / sq miThis ZIP17.4 / sq mi

Business and tax activity

Business establishments24This ZIP24
Employees122This ZIP122
Annual payroll$4,982,000This ZIP$4,982,000
Tax returns filed460This ZIP460
Total adjusted gross income$32,531,000This ZIP$32,531,000

Land area

Land area47.07 sq miThis ZIP47.07 sq mi
Water area0.12 sq miThis ZIP0.12 sq mi

Counties 61489 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Knox County 96.5%
Peoria County 3.5%

Other place names in 61489

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

ZIP codes near 61489

ZIPCityDistance
61428 Dahinda, IL 4.2 mi
61451 Laura, IL 4.9 mi
61485 Victoria, IL 6.6 mi
61572 Yates City, IL 9.2 mi
61448 Knoxville, IL 11.0 mi
61436 Gilson, IL 11.1 mi
61529 Elmwood, IL 11.4 mi
61449 La Fayette, IL 11.7 mi
61517 Brimfield, IL 12.4 mi
61458 Maquon, IL 12.9 mi

Find every ZIP code within 10 miles of 61489 →

Questions about this ZIP code

Where is ZIP code 61489?

61489 is in Williamsfield, Illinois, in Knox County, part of the Galesburg, IL micropolitan area. Its published point location is 40.9308, -90.0331.

What county is 61489 in?

61489 spans 2 counties: Knox County and Peoria County. Most of it falls in Knox County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 61489?

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

What time zone is 61489 in?

61489 uses America/Chicago.

How many people live in 61489?

About 820 people live in ZIP code 61489, in 340 households, at 17.4 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 61489?

$98,125 a year, against $83,390 across Illinois.

What ZIP codes are near 61489?

The closest are 61428 (4.2 mi), 61451 (4.9 mi), 61485 (6.6 mi), 61572 (9.2 mi) and 61448 (11 mi).

Is 61489 a PO Box ZIP code?

61489 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “61489 ZIP Code — Williamsfield, Illinois (Knox County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61489

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/61489.json

Underlying data is public domain or openly licensed — sources, vintages and licences.