Denison, Iowa
Denison is a city in Crawford County, Iowa, with 8,373 residents in 2020. It is in Iowa's 4th congressional district. Its state senate district is State Senate District 6; its state house district is State House District 12.
County
| County | Share of residents |
|---|---|
| Crawford County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Iowa's 4th congressional district (IA-04) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Pam Soseman | citywide | |
| U.S. Representative (IA-04) | Randy Feenstra (R) | 202-225-4426 | 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 6) | Jason Schultz (R) | 100% | |
| State Representative (State House District 12) | Steven Holt (R) | 100% |
From Wikidata (community-maintained); confirm on the city's website.
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); Mayors: Wikidata (CC0).
Local government
- Denison website: http://www.denisonia.com/
- Denison laws: search for the Denison, Iowa code of ordinances
- Crawford County laws: search for the Crawford County, Iowa code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 6 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 12 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Denison: the share of that ZIP's residents living in it.
- 51442 (86%)
Get this in your AI agent
Your agent can get Denison'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:1919945")
Denison 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.