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/CUSTER

Custer ZIP code, Wisconsin

The ZIP code for Custer, WI is 54423, and its area code is 715.

USPS city name
1 ZIP code
Population
2,394
Area code
715

NANPA lists no telephone rate centre for Custer itself, so these are the area codes of the nearest one, Polonia (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Custer in numbers

About 2,394 people live in Custer, in 926 households. The median household income is $113,690 a year, 47% above the Wisconsin median of $77,485 (US: $80,734). The median owner-occupied home is valued at $329,100 (23% above the Wisconsin median).

Population2,394Custer2,394
Households926Custer926
Median household income$113,690Custer$113,690Wisconsin$77,485US $80,734
Median home value$329,100Custer$329,100Wisconsin$266,500US $332,700

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

ZIP codes addressed as Custer

ZIP codes with the USPS city name Custer
ZIP City Type Population Median income Median home
54423 Custer , WI Standard 2,394 $113,690 $329,100

Map of Custer ZIP codes

The ZIP codes of Custer, 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 Custer

The nearest larger towns are Stevens Point (25,785 people, 7.2 mi), Plover (13,884 people, 9.8 mi) and Kronenwetter (8,395 people, 18 mi).

Towns near Custer
TownPopulationDistance
Stevens Point 25,785 7.2 mi
Plover 13,884 9.8 mi
Kronenwetter 8,395 18.5 mi
Mosinee 4,498 19.4 mi
Lake Wazeecha 2,850 21.5 mi
Weston 15,749 22.4 mi
Rothschild 5,600 22.5 mi
Wisconsin Rapids 18,722 23.6 mi
Waupaca 6,283 23.6 mi
Rib Mountain 7,289 25.4 mi
Wausau 39,996 28.6 mi

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

Cite this page

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

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