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zipcodes.pro — ZIP/61818

61818

ZIP 61818 is Cerro Gordo, Illinois, mostly in Piatt County; area code 217; Central time.

Type
Standard
Time zone
America/Chicago
County
Piatt +1 more
Population
1,560
Coordinates
39.8867, -88.7165
☼ Live from 61818 — Cerro Gordo, IL

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Where 61818 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 61818
  • 🔢 Type 61818 into a pocket calculator and turn it upside down: BIBIg — not quite a word, sorry.
  • ➕ As a number, 61,818 = 2 × 3 × 10303. Its digits add up to 24, a total 2,425 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1111000101111010
  • 🏠 Its numerical neighbours: 61817 (Catlin, IL, 54 mi away) and 61820 (Champaign, IL, 29 mi away).
  • 🔄 Backwards, 61818 becomes 81816, which is not a ZIP code at all.
  • 👥 5 other ZIP codes are made of exactly the same digits (16881, 18618, 18816, 68118, 88116). The farthest-flung twin is 88116 in Elida, NM, 930 miles away.
  • 🧭 Farther north than 55% of all ZIP codes, and farther west than 52%.
  • 🎯523 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 61818 and you would come out at 39.89°S, 91.28°E — 1,219 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 00m of daylight. Shortest: 9h 20m.
  • 📏 At 39.0 square miles of land, 61818 is bigger than 53% of ZIP codes — room for about 30 Central Parks.
🌙 The sky over 61818 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,560This ZIP1,560
Households620This ZIP620
Housing units649This ZIP649
Median age42.5This ZIP42.5Illinois39.0US 38.9
Median household income$84,375This ZIP$84,375Illinois$83,390US $80,734
Median home value$116,100This ZIP$116,100Illinois$263,300US $332,700
Median gross rent$846This ZIP$846Illinois$1,274US $1,413
Bachelor's degree or higher20.1%This ZIP20.1%
Mean commute22.1 minThis ZIP22.1 min
Population density40.0 / sq miThis ZIP40.0 / sq mi

Business and tax activity

Business establishments23This ZIP23
Employees163This ZIP163
Annual payroll$7,467,000This ZIP$7,467,000
Tax returns filed760This ZIP760
Total adjusted gross income$50,024,000This ZIP$50,024,000

Land area

Land area39.04 sq miThis ZIP39.04 sq mi
Water area0.00 sq miThis ZIP0.00 sq mi

Counties 61818 spans

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

CountyShare of this ZIP
Piatt County 85.5%
Macon County 14.5%

Other place names in 61818

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

ZIP codes near 61818

ZIPCityDistance
61855 Milmine, IL 3.9 mi
61936 La Place, IL 5.8 mi
62501 Argenta, IL 5.9 mi
61929 Hammond, IL 6.4 mi
61813 Bement, IL 8.2 mi
61830 Cisco, IL 8.6 mi
62554 Oreana, IL 9.7 mi
61937 Lovington, IL 11.0 mi
62549 Mt Zion, IL 11.3 mi
61856 Monticello, IL 12.1 mi

Find every ZIP code within 10 miles of 61818 →

Questions about this ZIP code

Where is ZIP code 61818?

61818 is in Cerro Gordo, Illinois, in Piatt County, part of the Champaign-Urbana, IL metropolitan area. Its published point location is 39.8867, -88.7165.

What county is 61818 in?

61818 spans 2 counties: Piatt County and Macon County. Most of it falls in Piatt 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 61818?

Cerro Gordo uses area code 217, from NANPA's telephone records.

What time zone is 61818 in?

61818 uses America/Chicago.

How many people live in 61818?

About 1,560 people live in ZIP code 61818, in 620 households, at 40.0 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 61818?

$84,375 a year, against $83,390 across Illinois.

What ZIP codes are near 61818?

The closest are 61855 (3.9 mi), 61936 (5.8 mi), 62501 (5.9 mi), 61929 (6.4 mi) and 61813 (8.2 mi).

Is 61818 a PO Box ZIP code?

61818 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “61818 ZIP Code — Cerro Gordo, Illinois (Piatt County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61818

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