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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Columbia, KY

Columbia, KY Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 42728StandardAdair15,925270 / 364

Timezone(s):Central (GMT -06:00)
Counties:ADAIR, KY
Population:4,452 (More Details)
Male Population:2,119
Female Population:2,333
Median Age:31
ZIP Codes:1
Area Codes:2
Total Area:412 square miles (county)
Land Area:405 square miles (county)
Water Area:7 square miles (county)

Columbia, KY Demographic Information *

Total population4,452
Male population2,119
Female population2,333
Median age (years)31.3
White Population3,952
Black Population342
Indian Population11
Asian Population23
Hawaiian Population3
Hispanic Population86
Median age (Male)27.4
Median age (Female)36
Total households1,637
Family households (families)898
Average household size2.12
Average family size2.79
Total housing units1,884
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],