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Custer, WI ZIP code

The ZIP code for Custer, Wisconsin is 54423. It is in Portage County.

Population in these ZIPs
2,394
Avg. median income
$113,700population-weighted
Typical home value
$386,500population-weighted
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ZIP codes within 10 miles

Custer, WI ZIP code list

Custer, WI ZIP codes
ZIP codePopulationMedian incomeTypical home value
544232,394$113,690$386,500

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Custer

Frequently asked questions

What is the ZIP code for Custer, WI?

The ZIP code for Custer, WI is 54423.

What county is Custer, Wisconsin in?

Custer ZIP codes are in Portage County.