ZIP code 63042: Hazelwood, MO

ZIP code 63042 is in Hazelwood, in St. Louis County, Missouri. It is in Missouri's 1st congressional district. Its state senate districts are State Senate District 13 (52%) and State Senate District 14 (48%); its state house districts are State House District 70 (100%) and State House District 73 (<0.1%).

19,646residents (2020 Census)

10.4 sq miland area

2cities and towns

1congressional district

35voting precincts

See it on the map All of Missouri

City and county

City or town	Share of ZIP residents
Hazelwood	100%
Berkeley	<0.1%

County	Share of ZIP residents
St. Louis County	100%

Town or county subdivision	Share of ZIP residents
Northwest township	37%
Lewis and Clark township	24%
Florissant township	16%
Airport township	14%
Ferguson township	9.2%

Congressional district

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

Elected officials

Office	Member	Contact	Share of residents
U.S. Representative (MO-01)	Wesley Bell (D)	202-225-2406	100%
U.S. Senator	Eric Schmitt (R)	202-224-5721 · contact form	statewide
U.S. Senator	Josh Hawley (R)	202-224-6154 · contact form	statewide
State Senator (State Senate District 13)	Angela Mosley (Democratic)		52%
State Senator (State Senate District 14)	Brian Williams (Democratic)		48%
State Representative (State House District 70)	Stephanie Boykin (Democratic)		100%
State Representative (State House District 73)	Raychel Proudie (Democratic)		<0.1%

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

Hazelwood website: http://www.hazelwoodmo.org
Hazelwood laws: search for the Hazelwood, Missouri code of ordinances
St. Louis County laws: search for the St. Louis County, Missouri code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 13	52%
State Senate District 14	48%

State house district	Share of ZIP residents
State House District 70	100%
State House District 73	<0.1%

Voting precincts

35 voting precincts overlap ZIP 63042. 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:

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ZIP 63042 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.