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/WI/WATERLOO

Waterloo ZIP code, Wisconsin

The ZIP code for Waterloo, WI is 53594, and its area code is 920.

USPS city name
1 ZIP code
Population
3,600
Area code
920

Waterloo in numbers

About 3,600 people live in Waterloo, in 1,589 households. The median household income is $87,776 a year, 13% above the Wisconsin median of $77,485 (US: $80,734). The median owner-occupied home is valued at $230,600 (13% below the Wisconsin median), and median gross rent is $1,106 a month. The median age is 37.8; 23.9% of adults 25 and over hold a bachelor's degree or higher (33.4% across Wisconsin); the average commute takes 32 minutes.

Population3,600Waterloo3,600
Households1,589Waterloo1,589
Median age37.8Waterloo37.8Wisconsin40.2US 38.9
Median household income$87,776Waterloo$87,776Wisconsin$77,485US $80,734
Median home value$230,600Waterloo$230,600Wisconsin$266,500US $332,700
Median gross rent$1,106Waterloo$1,106Wisconsin$1,087US $1,413
Bachelor's degree or higher23.9%Waterloo23.9%Wisconsin33.4%US 35.7%
Mean commute32.2 minWaterloo32.2 minWisconsin22.2 minUS 26.4 min
Population density949 / sq miWaterloo949 / sq mi

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

ZIP codes addressed as Waterloo

ZIP codes with the USPS city name Waterloo
ZIP City Type Population Median income Median home
53594 Waterloo , WI Standard 5,199 $88,390 $244,200

Map of Waterloo ZIP codes

53594

The ZIP codes of Waterloo, WI, 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 Waterloo

The nearest larger towns are Marshall (3,778 people, 3.8 mi), Lake Mills (6,470 people, 8.4 mi) and Columbus (5,488 people, 11 mi).

Towns near Waterloo
TownPopulationDistance
Marshall 3,778 3.8 mi
Lake Mills 6,470 8.4 mi
Deerfield 2,541 10.2 mi
Columbus 5,488 10.8 mi
Sun Prairie 37,570 12.5 mi
Cottage Grove 8,513 12.6 mi
Watertown 22,774 13.2 mi
Johnson Creek 3,362 13.2 mi
Windsor 9,452 15.3 mi
Jefferson 7,732 15.4 mi
DeForest 11,501 18.2 mi
McFarland 9,160 18.7 mi
Fort Atkinson 12,463 19.4 mi
Monona 8,527 19.5 mi

More nearby: every ZIP code in Jefferson County · Wisconsin ZIP codes

Cite this page

zipcodes.pro. “Waterloo, WI ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wi/waterloo

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