ZIP Code 42728 – Columbia, KY
Columbia, Kentucky · Adair County · Central time
| ZIP code | 42728 |
|---|---|
| City | Columbia |
| State | Kentucky |
| County | Adair CountyTaylor CountyMetcalfe County |
| Population | 16,412 |
| Time zone | Central · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 320.91 sq mi |
| Center (lat, long) | 37.1170, -85.2901 |
Area codes in this area
These are the area codes that most often serve ZIP 42728 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Map
Nearby ZIP codes
About ZIP 42728
ZIP code 42728 is assigned to Columbia, Kentucky. It crosses 3 counties; most of its land is in Adair County. Its Census area covers about 320.91 square miles of land. The closest neighboring ZIP is 42720 (Cane Valley), about 4.7 miles away.
Every address in 42728 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.
Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources