Boundary Atlas

Union City, Michigan

Union City is a village in Branch County (97% of residents) and Calhoun County (2.9%), Michigan, with 1,714 residents in 2020. It is in Michigan's 5th congressional district. It spans 2 state senate and 2 state house districts.

1,714residents (2020 Census)
1.4 sq miland area
1ZIP codes
1congressional district

County

CountyShare of residents
Branch County97%
Calhoun County2.9%

Congressional district

Congressional districtShare of residents
Michigan's 5th congressional district (MI-05)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MI-05)Tim Walberg (R)202-225-6276100%
U.S. SenatorElissa Slotkin (D)202-224-4822statewide
U.S. SenatorGary C. Peters (D)202-224-6221 · contact formstatewide
State Senator (State Senate District 17)Jonathan Lindsey (R)97%
State Senator (State Senate District 18)Thomas Albert (R)2.9%
State Representative (State House District 35)Jennifer Wortz (R)97%
State Representative (State House District 45)Sarah Lightner (R)2.9%

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 1797%
State Senate District 182.9%

State house districtShare of residents
State House District 3597%
State House District 452.9%

ZIP codes

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

Get this in your AI agent

Your agent can get Union City'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:2681360")

Union City 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.