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/GREEN

Green County, WI ZIP codes

There are 7 ZIP codes in Green County, WI, in 7 towns, from 53502 to 53574. The largest are 53566 (Monroe), 53574 (New Glarus) and 53521 (Brooklyn). 3 more cross into it from neighbouring counties: 53520, 53516 and 53504.

The county seat is Monroe.

ZIP codes
7
Partly in it
3 more
Towns
7
County seat
Monroe
County FIPS
55045
Population
37,017
Median household income
$82,852
Land area
584 sq mi
Area codes
353, 608
Metro area
Madison

Green County ZIP codes by town

Monroe (county seat)
53566

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 Green County

These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Green County.

Map of Green County ZIP codes

53502535215352253550535665357053574

The ZIP codes of Green 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.

Green County in numbers

About 37,017 people live in Green County, in 15,775 households, the 40th most populous of Wisconsin's 72 counties. The median household income is $82,852 a year, 7% above the Wisconsin median of $77,485 (US: $80,734). The median owner-occupied home is valued at $250,200 (6% below the Wisconsin median), and median gross rent is $867 a month. The median age is 43.6; 27.7% of adults 25 and over hold a bachelor's degree or higher (33.4% across Wisconsin); the average commute takes 25 minutes.

Population37,017Green37,017
Households15,775Green15,775
Median age43.6Green43.6Wisconsin40.2US 38.9
Median household income$82,852Green$82,852Wisconsin$77,485US $80,734
Median home value$250,200Green$250,200Wisconsin$266,500US $332,700
Median gross rent$867Green$867Wisconsin$1,087US $1,413
Bachelor's degree or higher27.7%Green27.7%Wisconsin33.4%US 35.7%
Mean commute24.6 minGreen24.6 minWisconsin22.2 minUS 26.4 min
Population density63 / sq miGreen63 / 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 Green County

Largest towns in Green County
TownZIP codesPopulation
Monroe 1 10,587
New Glarus 1 2,172
Brooklyn 1 1,408
Monticello 1 1,189
Albany 1 1,063
Juda 1 390
Browntown 1 249

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 Green County.

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

Every ZIP code in Green County, with figures

ZIP codes in Green County
ZIP City Type Population Median income Median home
53502 Albany , WI Standard 2,393 $87,000 $252,300
53521 Brooklyn , WI Standard 3,640 $108,036 $391,100
53522 Browntown , WI Standard 943 $81,528 $205,300
53550 Juda , WI Standard 1,220 $73,438 $228,900
53566 Monroe , WI Standard 14,901 $74,058 $220,400
53570 Monticello , WI Standard 2,686 $87,500 $245,200
53574 New Glarus , WI Standard 4,033 $106,508 $335,700

Cite this page

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

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