Boundary Atlas

St. Peters, Missouri

St. Peters is a city in St. Charles County, Missouri, with 57,748 residents in 2020. It is in Missouri's 3rd congressional district. It spans 5 state house districts. Its state senate district is State Senate District 23.

57,748residents (2020 Census)
22.5 sq miland area
5ZIP codes
1congressional district

County

CountyShare of residents
St. Charles County100%

Congressional district

Congressional districtShare of residents
Missouri's 3rd congressional district (MO-03)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MO-03)Robert F. Onder, Jr. (R)202-225-2956100%
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 23)Adam Schnelting (R)100%
State Representative (State House District 104)Terri Violet (R)56%
State Representative (State House District 65)Wendy Hausman (R)34%
State Representative (State House District 69)Scott Miller (R)5.1%
State Representative (State House District 102)Richard West (R)4.7%
State Representative (State House District 103)Dave Hinman (R)0.6%

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

State legislative districts

State senate districtShare of residents
State Senate District 23100%

State house districtShare of residents
State House District 10456%
State House District 6534%
State House District 695.1%
State House District 1024.7%
State House District 1030.6%

ZIP codes

Percentages mark ZIPs only partly in St. Peters: the share of that ZIP's residents living in it.

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Your agent can get St. Peters's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:place:2965126")

St. Peters here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.