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Calumet, IA ZIP code

The ZIP code for Calumet, Iowa is 51009. It is in O'Brien County.

Population in these ZIPs
113
Avg. median income
$58,800population-weighted
Typical home value
$83,300population-weighted
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ZIP codes within 10 miles

Calumet, IA ZIP code list

Calumet, IA ZIP codes
ZIP codePopulationMedian incomeTypical home value
51009113$58,750$83,300

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

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Frequently asked questions

What is the ZIP code for Calumet, IA?

The ZIP code for Calumet, IA is 51009.

What county is Calumet, Iowa in?

Calumet ZIP codes are in O'Brien County.