Boundary Atlas

ZIP code 63101: St. Louis, MO

ZIP code 63101 is in St. Louis, in St. Louis city, Missouri. It is in Missouri's 1st congressional district. Its state senate district is State Senate District 5; its state house district is State House District 78.

4,171residents (2020 Census)
0.4 sq miland area
1cities and towns
1congressional district
6voting precincts

See it on the mapAll of Missouri

City and county

City or townShare of ZIP residents
St. Louis100%

CountyShare of ZIP residents
St. Louis city100%

Town or county subdivisionShare of ZIP residents
St. Louis city100%

Congressional district

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

Elected officials

OfficeMemberContactShare of residents
MayorCara Spencer314-622-3201100%
U.S. Representative (MO-01)Wesley Bell (D)202-225-2406100%
U.S. SenatorEric Schmitt (R)202-224-5721 · contact formstatewide
U.S. SenatorJosh Hawley (R)202-224-6154 · contact formstatewide
State Senator (State Senate District 5)Steve Roberts (Democratic)100%
State Representative (State House District 78)Marty Murray (Democratic)100%
State Representative (State House District 76)Marlon Anderson (Democratic)<0.1%

Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); 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 5100%

State house districtShare of ZIP residents
State House District 78100%
State House District 76land only

Voting precincts

6 voting precincts overlap ZIP 63101. 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:

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ZIP 63101 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.