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/BROWN

Brown County, WI ZIP codes

There are 19 ZIP codes in Brown County, WI, in 8 towns, from 54115 to 54344. The largest are 54115 (De Pere), 54313 (Green Bay) and 54311 (Green Bay).

The county seat is Green Bay.

ZIP codes
19
Towns
8
County seat
Green Bay
County FIPS
55009
Population
270,892
Median household income
$79,649
Land area
530 sq mi
Area codes
274, 920
Metro area
Green Bay

Brown County ZIP codes by town

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.

Map of Brown County ZIP codes

54115541265415554173541805420854229543015430254303543045430554306543075430854311543135432454344

The ZIP codes of Brown 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.

Brown County in numbers

About 270,892 people live in Brown County, in 110,933 households, the 4th most populous of Wisconsin's 72 counties. The median household income is $79,649 a year, about the same as the Wisconsin median of $77,485 (US: $80,734). The median owner-occupied home is valued at $266,000 (about the same as the Wisconsin median), and median gross rent is $1,031 a month. The median age is 38.2; 33.5% of adults 25 and over hold a bachelor's degree or higher (33.4% across Wisconsin); the average commute takes 20 minutes.

Population270,892Brown270,892
Households110,933Brown110,933
Median age38.2Brown38.2Wisconsin40.2US 38.9
Median household income$79,649Brown$79,649Wisconsin$77,485US $80,734
Median home value$266,000Brown$266,000Wisconsin$266,500US $332,700
Median gross rent$1,031Brown$1,031Wisconsin$1,087US $1,413
Bachelor's degree or higher33.5%Brown33.5%Wisconsin33.4%US 35.7%
Mean commute19.6 minBrown19.6 minWisconsin22.2 minUS 26.4 min
Population density511 / sq miBrown511 / 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 Brown County

Largest towns in Brown County
TownZIP codesPopulation
Green Bay 12 106,253
De Pere 1 25,301
Suamico 1 12,985
Oneida 1 7,418
New Franken 1 4,329
Wrightstown 1 3,322
Denmark 1 2,558
Greenleaf 1 865

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 Brown County.

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

Every ZIP code in Brown County, with figures

ZIP codes in Brown County
ZIP City Type Population Median income Median home
54115 De Pere , WI Standard 50,411 $94,721 $339,500
54126 Greenleaf , WI Standard 4,233 $99,310 $283,900
54155 Oneida , WI Standard 7,418 $99,597 $389,700
54173 Suamico , WI Standard 3,403 $107,708 $341,400
54180 Wrightstown , WI Standard 3,378 $94,375 $286,200
54208 Denmark , WI Standard 6,231 $95,509 $301,100
54229 New Franken , WI Standard 4,329 $97,135 $300,100
54301 Green Bay , WI Standard 21,724 $78,684 $225,600
54302 Green Bay , WI Standard 30,333 $58,506 $175,300
54303 Green Bay , WI Standard 28,153 $60,781 $178,600
54304 Green Bay , WI Standard 28,502 $63,865 $220,600
54305 Green Bay , WI No street area — — —
54306 Green Bay , WI No street area — — —
54307 Green Bay , WI Standard 1,128 — —
54308 Green Bay , WI No street area — — —
54311 Green Bay , WI Standard 37,879 $84,914 $300,600
54313 Green Bay , WI Standard 41,422 $107,599 $323,300
54324 Green Bay , WI No street area — — —
54344 Green Bay , WI No street area — — —

Cite this page

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

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