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 — CITY/IL/CALEDONIA

Caledonia ZIP code, Illinois

The ZIP code for Caledonia, IL is 61011, and its area codes are 815 and 779.

USPS city name
1 ZIP code
Population
226
Area codes
815, 779

NANPA lists no telephone rate centre for Caledonia itself, so these are the area codes of the nearest one, Poplar Grove (3.1 miles). A town on an area-code boundary can differ from its neighbour.

Caledonia in numbers

About 226 people live in Caledonia, in 112 households. The median household income is $88,571 a year, 6% above the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $163,200 (38% below the Illinois median), and median gross rent is $1,711 a month. The median age is 41.0; 31.7% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 26 minutes.

Population226Caledonia226
Households112Caledonia112
Median age41.0Caledonia41.0Illinois39.0US 38.9
Median household income$88,571Caledonia$88,571Illinois$83,390US $80,734
Median home value$163,200Caledonia$163,200Illinois$263,300US $332,700
Median gross rent$1,711Caledonia$1,711Illinois$1,274US $1,413
Bachelor's degree or higher31.7%Caledonia31.7%Illinois37.8%US 35.7%
Mean commute25.9 minCaledonia25.9 minIllinois27.8 minUS 26.4 min
Population density218 / sq miCaledonia218 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Caledonia village. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Caledonia

ZIP codes with the USPS city name Caledonia
ZIP City Type Population Median income Median home
61011 Caledonia , IL Standard 2,676 $127,273 $311,900

Map of Caledonia ZIP codes

61011

The ZIP codes of Caledonia, IL, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Caledonia

The nearest larger towns are Candlewick Lake (5,448 people, 1.7 mi), Argyle (324 people, 2.5 mi) and Timberlane (1,278 people, 2.7 mi).

Towns near Caledonia
TownPopulationDistance
Candlewick Lake 5,448 1.7 mi
Poplar Grove 3,923 2.8 mi
Loves Park 23,502 5.8 mi
Machesney Park 22,630 6.7 mi
Roscoe 10,706 7.1 mi
Belvidere 24,752 7.1 mi
Cherry Valley 3,749 10.1 mi
Rockton 7,974 10.2 mi
South Beloit 7,946 10.5 mi
Rockford 147,521 11.5 mi
Beloit, WI 36,534 12.4 mi
Harvard 9,598 14.5 mi
Marengo 7,040 17.3 mi
Winnebago 2,981 18.7 mi

More nearby: every ZIP code in Boone County · Illinois ZIP codes

Cite this page

zipcodes.pro. “Caledonia, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/caledonia

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