Williamson, Iowa
Williamson is a city in Lucas County, Iowa, with 120 residents in 2020. It is in Iowa's 3rd congressional district. Its state senate district is State Senate District 12; its state house district is State House District 24.
County
| County | Share of residents |
|---|---|
| Lucas County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Iowa's 3rd congressional district (IA-03) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IA-03) | Zachary Nunn (R) | 202-225-5476 | 100% |
| U.S. Senator | Chuck Grassley (R) | 202-224-3744 · contact form | statewide |
| U.S. Senator | Joni Ernst (R) | 202-224-3254 · contact form | statewide |
| State Senator (State Senate District 12) | Amy Sinclair (R) | 100% | |
| State Representative (State House District 24) | Sam Wengryn (R) | 100% |
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
- Williamson laws: search for the Williamson, Iowa code of ordinances
- Lucas County website: https://lucascounty.iowa.gov/
- Lucas County laws: search for the Lucas County, Iowa code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 12 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 24 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Williamson: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Williamson'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:1985935")
Williamson 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.