Boundary Atlas

Grimes, Iowa

Grimes is a city in Polk County (100% of residents) and Dallas County (0.4%), Iowa, with 15,440 residents in 2020. It is in Iowa's 3rd congressional district. It spans 2 state house districts. Its state senate district is State Senate District 23.

15,440residents (2020 Census)
13.8 sq miland area
2ZIP codes
1congressional district

County

CountyShare of residents
Polk County100%
Dallas County0.4%

Congressional district

Congressional districtShare of residents
Iowa's 3rd congressional district (IA-03)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IA-03)Zachary Nunn (R)202-225-5476100%
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 23)Jack Whitver (R)100%
State Representative (State House District 46)Dan Gehlbach (R)100%
State Representative (State House District 45)Brian Lohse (R)<0.1%

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 23100%

State house districtShare of residents
State House District 46100%
State House District 45<0.1%

ZIP codes

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

Get this in your AI agent

Your agent can get Grimes'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:1933060")

Grimes 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.