ZIP code 40023: Louisville/Jefferson County metro government (balance), KY
ZIP code 40023 is in Louisville/Jefferson County metro government (balance) (53% of residents) and Elk Creek (19%), in Jefferson County (53%), Spencer County (44%) and Shelby County (3.1%), Kentucky. 28% of its residents live outside city limits. It is in Kentucky's 2nd congressional district (53%) and Kentucky's 4th congressional district (47%). Its state senate districts are State Senate District 14 (44%), State Senate District 36 (31%) and State Senate District 7 (25%); its state house districts are State House District 36 (53%), State House District 53 (44%) and State House District 58 (3.1%).
See it on the mapAll of Kentucky
City and county
| City or town | Share of ZIP residents |
|---|---|
| Louisville/Jefferson County metro government (balance) | 53% |
| Elk Creek | 19% |
| County | Share of ZIP residents |
|---|---|
| Jefferson County | 53% |
| Spencer County | 44% |
| Shelby County | 3.1% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Floyds Fork CCD | 53% |
| West Spencer CCD | 44% |
| Simpsonville CCD | 3.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Kentucky's 2nd congressional district (KY-02) | 53% |
| Kentucky's 4th congressional district (KY-04) | 47% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (KY-02) | Brett Guthrie (R) | 202-225-3501 | 53% |
| U.S. Representative (KY-04) | Thomas Massie (R) | 202-225-3465 | 47% |
| U.S. Senator | Mitch McConnell (R) | 202-224-2541 · contact form | statewide |
| U.S. Senator | Rand Paul (R) | 202-224-4343 · contact form | statewide |
| State Senator (State Senate District 14) | Jimmy Higdon (R) | 270-692-6945 | 44% |
| State Senator (State Senate District 36) | Julie Adams (R) | 31% | |
| State Senator (State Senate District 7) | Aaron Reed (R) | 502-233-3689 | 25% |
| State Representative (State House District 36) | John Hodgson (R) | 53% | |
| State Representative (State House District 53) | James Tipton (R) | 44% | |
| State Representative (State House District 58) | Jennifer Decker (R) | 3.1% |
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
- Louisville/Jefferson County metro government (balance) laws: search for the Louisville/Jefferson County metro government (balance), Kentucky code of ordinances
- Elk Creek laws: search for the Elk Creek, Kentucky code of ordinances
- Jefferson County website: http://www.louisvilleky.gov
- Jefferson County laws: search for the Jefferson County, Kentucky code of ordinances
- Spencer County website: http://www.spencercountyky.gov
- Spencer County laws: search for the Spencer County, Kentucky code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 14 | 44% |
| State Senate District 36 | 31% |
| State Senate District 7 | 25% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 36 | 53% |
| State House District 53 | 44% |
| State House District 58 | 3.1% |
Voting precincts
10 voting precincts overlap ZIP 40023. 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:40023")
ZIP 40023 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.