Boundary Atlas

ZIP code 42728: Columbia, KY

ZIP code 42728 is in Columbia (29% of residents), in Adair County (99%), Taylor County (0.8%) and Metcalfe County (<0.1%), Kentucky. 71% of its residents live outside city limits. It is in Kentucky's 1st congressional district. Its state senate district is State Senate District 16; its state house districts are State House District 21 (99%) and State House District 51 (0.8%).

16,451residents (2020 Census)
320.9 sq miland area
1cities and towns
1congressional district
19voting precincts

See it on the mapAll of Kentucky

City and county

City or townShare of ZIP residents
Columbia29%

CountyShare of ZIP residents
Adair County99%
Taylor County0.8%
Metcalfe County<0.1%

Town or county subdivisionShare of ZIP residents
Columbia CCD54%
White Oak CCD14%
Gradyville CCD10%
Cane Valley CCD9.7%
Glens Fork CCD5.9%
Casey Creek CCD5.0%
Campbellsville CCD0.8%
Edmonton CCD<0.1%

Congressional district

Congressional districtShare of ZIP residents
Kentucky's 1st congressional district (KY-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (KY-01)James Comer (R)202-225-3115100%
U.S. SenatorMitch McConnell (R)202-224-2541 · contact formstatewide
U.S. SenatorRand Paul (R)202-224-4343 · contact formstatewide
State Senator (State Senate District 16)Max Wise (R)100%
State Representative (State House District 21)Amy Neighbors (R)99%
State Representative (State House District 51)Sarge Pollock (R)0.8%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 16100%

State house districtShare of ZIP residents
State House District 2199%
State House District 510.8%

Voting precincts

19 voting precincts overlap ZIP 42728. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:42728")

ZIP 42728 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.