Swansea, Illinois
Swansea is a village in St. Clair County, Illinois, with 14,386 residents in 2020. It is in Illinois's 13th congressional district. It spans 2 state senate and 2 state house districts.
County
| County | Share of residents |
|---|---|
| St. Clair County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Illinois's 13th congressional district (IL-13) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-13) | Nikki Budzinski (D) | 202-225-2371 | 100% |
| 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 | 95% |
| State Senator (State Senate District 56) | Erica Harriss (R) | 618-307-5789 | 5.3% |
| State Representative (State House District 113) | Jay Hoffman (Democratic) | 618-416-7407 | 95% |
| State Representative (State House District 112) | Katie Stuart (Democratic) | 618-365-6650 | 5.3% |
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
- Swansea laws: search for the Swansea, 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 | 95% |
| State Senate District 56 | 5.3% |
| State house district | Share of residents |
|---|---|
| State House District 113 | 95% |
| State House District 112 | 5.3% |
ZIP codes
Percentages mark ZIPs only partly in Swansea: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Swansea'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:1774119")
Swansea 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.