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/SISTER-BAY

Sister Bay ZIP code, Wisconsin

The ZIP code for Sister Bay, WI is 54234, and its area code is 920.

USPS city name
1 ZIP code
Population
1,044
Area code
920

Sister Bay in numbers

About 1,044 people live in Sister Bay, in 575 households. The median household income is $71,169 a year, 8% below the Wisconsin median of $77,485 (US: $80,734). The median owner-occupied home is valued at $392,200 (47% above the Wisconsin median), and median gross rent is $1,168 a month. The median age is 61.0; 51.3% of adults 25 and over hold a bachelor's degree or higher (33.4% across Wisconsin); the average commute takes 13 minutes.

Population1,044Sister Bay1,044
Households575Sister Bay575
Median age61.0Sister Bay61.0Wisconsin40.2US 38.9
Median household income$71,169Sister Bay$71,169Wisconsin$77,485US $80,734
Median home value$392,200Sister Bay$392,200Wisconsin$266,500US $332,700
Median gross rent$1,168Sister Bay$1,168Wisconsin$1,087US $1,413
Bachelor's degree or higher51.3%Sister Bay51.3%Wisconsin33.4%US 35.7%
Mean commute12.8 minSister Bay12.8 minWisconsin22.2 minUS 26.4 min
Population density391 / sq miSister Bay391 / sq mi

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

ZIP codes addressed as Sister Bay

ZIP codes with the USPS city name Sister Bay
ZIP City Type Population Median income Median home
54234 Sister Bay , WI Standard 2,158 $74,583 $456,300

Map of Sister Bay ZIP codes

54234

The ZIP codes of Sister Bay, 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 Sister Bay

The nearest larger towns are Menominee, MI (8,326 people, 24 mi), Marinette (11,115 people, 25 mi) and Sturgeon Bay (9,806 people, 28 mi).

Towns near Sister Bay
TownPopulationDistance
Menominee, MI 8,326 24.5 mi
Marinette 11,115 25.5 mi
Sturgeon Bay 9,806 27.8 mi

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

Cite this page

zipcodes.pro. “Sister Bay, WI ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wi/sister-bay

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