Boundary Atlas

ZIP code 40503: Lexington-Fayette, KY

ZIP code 40503 is in Lexington-Fayette, in Fayette County, Kentucky. It is in Kentucky's 6th congressional district. Its state senate districts are State Senate District 12 (49%), State Senate District 13 (47%) and State Senate District 22 (3.7%); its state house districts are State House District 75 (37%), State House District 45 (37%), State House District 79 (22%) and State House District 93 (3.7%).

28,073residents (2020 Census)
8.8 sq miland area
1cities and towns
1congressional district
35voting precincts

See it on the mapAll of Kentucky

City and county

City or townShare of ZIP residents
Lexington-Fayette100%

CountyShare of ZIP residents
Fayette County100%

Town or county subdivisionShare of ZIP residents
Lexington-Fayette Central CCD60%
Lexington-Fayette Southwest CCD37%
Lexington-Fayette Southeast CCD3.7%

Congressional district

Congressional districtShare of ZIP residents
Kentucky's 6th congressional district (KY-06)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1249%
State Senate District 1347%
State Senate District 223.7%

State house districtShare of ZIP residents
State House District 7537%
State House District 4537%
State House District 7922%
State House District 933.7%

Voting precincts

35 voting precincts overlap ZIP 40503. Map them, with each precinct's share of the ZIP's residents.

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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:40503")

ZIP 40503 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.