Belleville, Illinois
Belleville is a city in St. Clair County, Illinois, with 42,404 residents in 2020. It spans 2 congressional districts: IL-13 (92%) and IL-12 (7.6%). It spans 2 state house districts. Its state senate district is State Senate District 57.
County
| County | Share of residents |
|---|---|
| St. Clair County | 100% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Illinois's 13th congressional district (IL-13) | 92% |
| Illinois's 12th congressional district (IL-12) | 7.6% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-13) | Nikki Budzinski (D) | 202-225-2371 | 92% |
| U.S. Representative (IL-12) | Mike Bost (R) | 202-225-5661 | 7.6% |
| U.S. Senator | Richard J. Durbin (D) | 202-224-2152 · contact form | statewide |
| U.S. Senator | Tammy Duckworth (D) | 202-224-2854 · contact form | statewide |
| State Senator (State Senate District 57) | Christopher Belt (Democratic) | 618-875-1212 | 100% |
| State Representative (State House District 113) | Jay Hoffman (Democratic) | 618-416-7407 | 96% |
| State Representative (State House District 114) | Kevin Schmidt (R) | 618-215-1050 | 4.3% |
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
- Belleville website: https://www.belleville.net/
- Belleville laws: search for the Belleville, Illinois code of ordinances
- St. Clair County laws: search for the St. Clair County, Illinois code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 57 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 113 | 96% |
| State House District 114 | 4.3% |
ZIP codes
Percentages mark ZIPs only partly in Belleville: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Belleville'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:1704845")
Belleville 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.