Boundary Atlas

ZIP code 63028: Festus, MO

ZIP code 63028 is in Festus (46% of residents) and Crystal City (1.1%), in Jefferson County (98%), Ste. Genevieve County (2.5%) and St. Francois County (<0.1%), Missouri. 53% of its residents live outside city limits. It is in Missouri's 8th congressional district (98%) and Missouri's 3rd congressional district (1.6%). Its state senate districts are State Senate District 22 (56%) and State Senate District 3 (44%); its state house districts are State House District 114 (63%), State House District 115 (34%), State House District 145 (2.5%), State House District 111 (0.7%) and State House District 117 (<0.1%).

27,924residents (2020 Census)
125.8 sq miland area
3cities and towns
2congressional districts
15voting precincts

See it on the mapAll of Missouri

City and county

City or townShare of ZIP residents
Festus46%
Crystal City1.1%
Herculaneum0.1%

CountyShare of ZIP residents
Jefferson County98%
Ste. Genevieve County2.5%
St. Francois County<0.1%

Town or county subdivisionShare of ZIP residents
River View township44%
Plattin township31%
Joachim township19%
Central township3.5%
Jackson township2.5%
Marion township<0.1%
Valle townshipland only

Congressional districts

Congressional districtShare of ZIP residents
Missouri's 8th congressional district (MO-08)98%
Missouri's 3rd congressional district (MO-03)1.6%

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.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MO-08)Jason Smith (R)202-225-440498%
U.S. Representative (MO-03)Robert F. Onder, Jr. (R)202-225-29561.6%
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 22)Mary Elizabeth Coleman (R)56%
State Senator (State Senate District 3)Mike Henderson (R)44%
State Representative (State House District 115)Bill Lucas (R)34%
State Representative (State House District 145)Bryant Wolfin (R)2.5%
State Representative (State House District 111)Cecelie Williams (R)0.7%
State Representative (State House District 117)Becky Laubinger (R)<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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 2256%
State Senate District 344%

State house districtShare of ZIP residents
State House District 11463%
State House District 11534%
State House District 1452.5%
State House District 1110.7%
State House District 117<0.1%

Voting precincts

15 voting precincts overlap ZIP 63028. 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:63028")

ZIP 63028 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.