Boundary Atlas

DeWitt, Iowa

DeWitt is a city in Clinton County, Iowa, with 5,514 residents in 2020. It is in Iowa's 1st congressional district. Its state senate district is State Senate District 35; its state house district is State House District 70.

5,514residents (2020 Census)
6.2 sq miland area
1ZIP codes
1congressional district

County

CountyShare of residents
Clinton County100%

Congressional district

Congressional districtShare of residents
Iowa's 1st congressional district (IA-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IA-01)Mariannette Miller-Meeks (R)202-225-6576100%
U.S. SenatorChuck Grassley (R)202-224-3744 · contact formstatewide
U.S. SenatorJoni Ernst (R)202-224-3254 · contact formstatewide
State Senator (State Senate District 35)Mike Zimmer (Democratic)100%
State Representative (State House District 70)Norlin Mommsen (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

State legislative districts

State senate districtShare of residents
State Senate District 35100%

State house districtShare of residents
State House District 70100%

ZIP codes

Percentages mark ZIPs only partly in DeWitt: the share of that ZIP's residents living in it.

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Your agent can get DeWitt's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

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DeWitt 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.