ZIP code · Columbia · Kentucky · United States
ZIP code 42728 — Columbia
ZIP code 42728 serves Columbia, Kentucky.
- Postal code
- 42728Single source Value from one source, not cross-checked.
- City
- Columbia
- County
- Adair FIPS 21001
- State
- Kentucky
- Country
- United States
- Coordinates
- 37.1161, -85.2656 — precision precise (locality)
View on OpenStreetMap - Population
- 16,108 (ZCTA, ACS 5-year)
- Population density
- 50 / sq mi
- Land area
- 320.9 sq mi (831.2 km²) (ZCTA, ACS 5-year)
- Median household income
- $49,063
- Per-capita income
- $27,804
- Median age
- 40.2
- Households
- 6,100
- Housing units
- 7,510
- Median home value
- $134,100
- Median gross rent
- $776 / month
- Congressional district
- KY-1 (119th Congress)
- USDA hardiness zone
- 7a (0 to 5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 270Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 42728 with another ZIP · ZIPs within 25 miles · distance from 42728
Map of ZIP code 42728
Climate — monthly normals
Warmest month Jul (avg high 86°F), coldest Jan (avg low 25°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 44 | 48 | 57 | 68 | 75 | 83 | 86 | 85 | 79 | 69 | 57 | 47 |
| Avg low °F | 25 | 27 | 34 | 42 | 53 | 61 | 65 | 64 | 56 | 45 | 34 | 29 |
| Precip in | 5.5 | 4.6 | 5.4 | 5.1 | 5.4 | 5.0 | 5.1 | 4.2 | 4.6 | 3.1 | 4.0 | 5.0 |
NOAA 1991–2020 climate normals from the nearest station: JAMESTOWN WWTP (13.6 mi) · NOAA NCEI
Places in ZIP 42728
- 14 schools
- 1 colleges & universities
- 2 hospitals & clinics
- 2 doctors & dentists
- 1 pharmacies
- 2 supermarkets
- 25 restaurants & cafés
- 1 parks
- 5 playgrounds
- 1 libraries
- 2 post offices
- 63 places of worship
- 5 banks
- 7 gas stations
- 1 EV charging stations
- 2 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page