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Columbia, KY ZIP code

The ZIP code for Columbia, Kentucky is 42728. It is in Adair County.

Population in these ZIPs
16,412
Avg. median income
$51,600population-weighted
Typical home value
$161,900population-weighted
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ZIP codes within 10 miles

Columbia, KY ZIP code list

Columbia, KY ZIP codes
ZIP codePopulationMedian incomeTypical home value
4272816,412$51,623$161,900

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 Columbia, KY?

The ZIP code for Columbia, KY is 42728.

What county is Columbia, Kentucky in?

Columbia ZIP codes are in Adair County.