ZIP code 40299: Louisville/Jefferson County metro government (balance), KY
ZIP code 40299 is in Louisville/Jefferson County metro government (balance) (51% of residents), Jeffersontown (45%) and Middletown (2.0%), in Jefferson County (99%) and Bullitt County (0.5%), Kentucky. It is in Kentucky's 3rd congressional district (93%) and Kentucky's 2nd congressional district (6.9%). Its state senate districts are State Senate District 36 (38%), State Senate District 26 (37%), State Senate District 7 (23%), State Senate District 19 (2.3%) and State Senate District 38 (0.5%); its state house districts are State House District 31 (36%), State House District 29 (26%), State House District 36 (26%), State House District 46 (12%) and State House District 49 (0.5%).
See it on the mapAll of Kentucky
City and county
| City or town | Share of ZIP residents |
|---|---|
| Louisville/Jefferson County metro government (balance) | 51% |
| Jeffersontown | 45% |
| Middletown | 2.0% |
| Forest Hills | 1.0% |
| Douglass Hills | 0.5% |
| County | Share of ZIP residents |
|---|---|
| Jefferson County | 99% |
| Bullitt County | 0.5% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Southeast Jefferson CCD | 92% |
| Floyds Fork CCD | 8.0% |
| Mount Washington CCD | 0.5% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Kentucky's 3rd congressional district (KY-03) | 93% |
| Kentucky's 2nd congressional district (KY-02) | 6.9% |
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.
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 36 | 38% |
| State Senate District 26 | 37% |
| State Senate District 7 | 23% |
| State Senate District 19 | 2.3% |
| State Senate District 38 | 0.5% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 31 | 36% |
| State House District 29 | 26% |
| State House District 36 | 26% |
| State House District 46 | 12% |
| State House District 49 | 0.5% |
Voting precincts
52 voting precincts overlap ZIP 40299. 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:40299")
ZIP 40299 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.