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 — STATE/WI/COUNTY/KEWAUNEE

Kewaunee County, WI ZIP codes

Kewaunee County, WI has 4 ZIP codes, in 4 towns: 54217, 54216, 54201 and 54205. 1 more crosses into it from a neighbouring county: 54208.

The county seat is Kewaunee.

ZIP codes
4
Partly in it
1 more
Towns
4
County seat
Kewaunee
County FIPS
55061
Population
20,664
Median household income
$82,725
Land area
342 sq mi
Area code
274
Metro area
Green Bay

Kewaunee County ZIP codes by town

Kewaunee (county seat)
54216

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Kewaunee County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Kewaunee County.

Map of Kewaunee County ZIP codes

54201542055421654217

The ZIP codes of Kewaunee County, 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.

Kewaunee County in numbers

About 20,664 people live in Kewaunee County, in 8,357 households, the 52nd most populous of Wisconsin's 72 counties. The median household income is $82,725 a year, 7% above the Wisconsin median of $77,485 (US: $80,734). The median owner-occupied home is valued at $222,200 (17% below the Wisconsin median), and median gross rent is $847 a month. The median age is 44.6; 21.9% of adults 25 and over hold a bachelor's degree or higher (33.4% across Wisconsin); the average commute takes 24 minutes.

Population20,664Kewaunee20,664
Households8,357Kewaunee8,357
Median age44.6Kewaunee44.6Wisconsin40.2US 38.9
Median household income$82,725Kewaunee$82,725Wisconsin$77,485US $80,734
Median home value$222,200Kewaunee$222,200Wisconsin$266,500US $332,700
Median gross rent$847Kewaunee$847Wisconsin$1,087US $1,413
Bachelor's degree or higher21.9%Kewaunee21.9%Wisconsin33.4%US 35.7%
Mean commute24.1 minKewaunee24.1 minWisconsin22.2 minUS 26.4 min
Population density60 / sq miKewaunee60 / sq mi

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

Largest towns in Kewaunee County

Largest towns in Kewaunee County
TownZIP codesPopulation
Algoma 1 3,228
Kewaunee 1 2,806
Luxemburg 1 2,737
Casco 1 561

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Kewaunee County.

Not sure you are in Kewaunee County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Kewaunee County, with figures

ZIP codes in Kewaunee County
ZIP City Type Population Median income Median home
54201 Algoma , WI Standard 5,209 $67,542 $183,200
54205 Casco , WI Standard 2,229 $90,781 $252,900
54216 Kewaunee , WI Standard 6,075 $83,813 $185,800
54217 Luxemburg , WI Standard 8,022 $89,489 $284,700

Cite this page

zipcodes.pro. “Kewaunee County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/wi/county/kewaunee

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