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/WILLOW-LAKE

Willow Lake ZIP codes, Illinois

No ZIP code is named for Willow Lake, IL; addresses there use a neighbouring town's name. The ZIP code covering it is 61032. Its area codes are 815 and 779.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
764
Area codes
815, 779

NANPA lists no telephone rate centre for Willow Lake itself, so these are the area codes of the nearest one, Freeport (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Willow Lake in numbers

About 764 people live in Willow Lake, in 375 households. The median household income is $100,568 a year, 21% above the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $162,200 (38% below the Illinois median). The median age is 57.0; 22.7% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 21 minutes.

Population764Willow Lake764
Households375Willow Lake375
Median age57.0Willow Lake57.0Illinois39.0US 38.9
Median household income$100,568Willow Lake$100,568Illinois$83,390US $80,734
Median home value$162,200Willow Lake$162,200Illinois$263,300US $332,700
Bachelor's degree or higher22.7%Willow Lake22.7%Illinois37.8%US 35.7%
Mean commute20.5 minWillow Lake20.5 minIllinois27.8 minUS 26.4 min
Population density280 / sq miWillow Lake280 / sq mi

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

ZIP codes covering Willow Lake

These ZIP codes cover part of Willow Lake but are addressed as somewhere else.

ZIP codes overlapping Willow Lake
ZIP City Type Population Median income Median home
61032 Freeport , IL Standard 29,020 $56,593 $112,300

Map of Willow Lake ZIP codes

61032

The ZIP codes of Willow Lake, 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 Willow Lake

The nearest larger towns are Freeport (23,505 people, 3.1 mi), Orangeville (1,045 people, 9.1 mi) and Lena (2,761 people, 10.0 mi).

Towns near Willow Lake
TownPopulationDistance
Freeport 23,505 3.1 mi
Lena 2,761 10.0 mi
Monroe, WI 10,587 18.6 mi
Winnebago 2,981 21.0 mi
Mount Morris 2,726 22.4 mi
Brodhead, WI 3,197 23.6 mi
Byron 3,743 23.9 mi
Oregon 3,851 27.0 mi
Rockford 147,521 29.7 mi

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

Cite this page

zipcodes.pro. “Willow Lake, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/willow-lake

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