ZIP code 63124: Ladue, MO
ZIP code 63124 is in Ladue (78% of residents), University City (17%) and Clayton (2.6%), in St. Louis County, Missouri. It is in Missouri's 2nd congressional district (60%) and Missouri's 1st congressional district (40%). Its state senate districts are State Senate District 24 (78%), State Senate District 14 (18%) and State Senate District 4 (4.3%); its state house districts are State House District 99 (81%), State House District 86 (17%), State House District 91 (0.9%) and State House District 83 (0.8%).
See it on the mapAll of Missouri
City and county
| City or town | Share of ZIP residents |
|---|---|
| Ladue | 78% |
| University City | 17% |
| Clayton | 2.6% |
| Rock Hill | 0.9% |
| Richmond Heights | 0.8% |
| Olivette | 0.2% |
| County | Share of ZIP residents |
|---|---|
| St. Louis County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Clayton township | 98% |
| University township | 1.6% |
| Creve Coeur township | 0.2% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Missouri's 2nd congressional district (MO-02) | 60% |
| Missouri's 1st congressional district (MO-01) | 40% |
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 24 | 78% |
| State Senate District 14 | 18% |
| State Senate District 4 | 4.3% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 99 | 81% |
| State House District 86 | 17% |
| State House District 91 | 0.9% |
| State House District 83 | 0.8% |
Voting precincts
20 voting precincts overlap ZIP 63124. 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:63124")
ZIP 63124 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.