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Zip Code 42728 — Columbia, KY

42728 is a ZIP Code associated with Columbia, KY, located within Adair. The postal region supports an estimated population of 16,412 residents across Data Pending housing units, with a population density of 19.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (37.109430, -85.288730)

Data MetricLocal Statistic
Postal / Zip Code42728
Primary CityColumbia
State / ProvinceKY
CountyAdair
Total Population16,412
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density19.7 people/sq mi
TimezoneAmerica/Chicago

How 42728 Compares

MetricZIP 42728Adair CountyKY State Average
Population16,41217,9784,542,460
Median IncomeData PendingN/AN/A
Population Density19.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 42741Glens Fork8.6 mi420N/A
Zip 42753Knifley10.1 mi657N/A
Zip 42742Gradyville10.7 mi72N/A
Zip 42715Breeding13.4 mi417N/A
Zip 42642Russell Springs14.4 mi13,459N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →