Posen, Illinois
Posen is a village in Cook County, Illinois, with 5,632 residents in 2020. It is in Illinois's 1st congressional district. It spans 2 state senate and 2 state house districts.
County
| County | Share of residents |
|---|---|
| Cook County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Illinois's 1st congressional district (IL-01) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IL-01) | Jonathan L. Jackson (D) | 202-225-4372 | 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 14) | Emil Jones (Democratic) | 773-995-7748 | 71% |
| State Senator (State Senate District 15) | Napoleon Harris (Democratic) | 708-893-0552 | 29% |
| State Representative (State House District 28) | Bob Rita (Democratic) | 708-396-2822 | 71% |
| State Representative (State House District 30) | Will Davis (Democratic) | 708-799-7300 | 29% |
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
- Posen website: http://www.villageofposen.org/
- Posen laws: search for the Posen, Illinois code of ordinances
- Cook County website: https://www.cookcountyil.gov/
- Cook County laws: search for the Cook County, Illinois code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 14 | 71% |
| State Senate District 15 | 29% |
| State house district | Share of residents |
|---|---|
| State House District 28 | 71% |
| State House District 30 | 29% |
ZIP codes
Percentages mark ZIPs only partly in Posen: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Posen'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:1761314")
Posen 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.