Boundary Atlas

Springfield, Michigan

Springfield is a city in Calhoun County, Michigan, with 5,292 residents in 2020. It is in Michigan's 4th congressional district. Its state senate district is State Senate District 18; its state house district is State House District 44.

5,292residents (2020 Census)
3.6 sq miland area
2ZIP codes
1congressional district

County

CountyShare of residents
Calhoun County100%

Congressional district

Congressional districtShare of residents
Michigan's 4th congressional district (MI-04)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MI-04)Bill Huizenga (R)202-225-4401100%
U.S. SenatorElissa Slotkin (D)202-224-4822statewide
U.S. SenatorGary C. Peters (D)202-224-6221 · contact formstatewide
State Senator (State Senate District 18)Thomas Albert (R)100%
State Representative (State House District 44)Steve Frisbie (R)100%

Elected under MI's previous legislative map; the district's lines changed for 2026.

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 18100%

State house districtShare of residents
State House District 44100%

ZIP codes

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

Get this in your AI agent

Your agent can get Springfield'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:2675700")

Springfield 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.