Boundary Atlas

ZIP code 48720: Bay Port, MI

ZIP code 48720 is in Bay Port (45% of residents), in Huron County, Michigan. 55% of its residents live outside city limits. It is in Michigan's 9th congressional district. Its state senate district is State Senate District 25; its state house district is State House District 98.

1,041residents (2020 Census)
33.6 sq miland area
1cities and towns
1congressional district
4voting precincts

See it on the mapAll of Michigan

City and county

City or townShare of ZIP residents
Bay Port45%

CountyShare of ZIP residents
Huron County100%

Town or county subdivisionShare of ZIP residents
Fairhaven township65%
McKinley township18%
Winsor township17%

Congressional district

Congressional districtShare of ZIP residents
Michigan's 9th congressional district (MI-09)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 25100%

State house districtShare of ZIP residents
State House District 98100%

Voting precincts

4 voting precincts overlap ZIP 48720. Map them, with each precinct's share of the ZIP's residents.

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Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:48720")

ZIP 48720 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.