Boundary Atlas

ZIP code 48840: Haslett, MI

ZIP code 48840 is in Haslett (84% of residents), in Ingham County (86%), Clinton County (8.7%) and Shiawassee County (5.7%), Michigan. 16% of its residents live outside city limits. It is in Michigan's 7th congressional district. Its state senate district is State Senate District 28; its state house district is State House District 75.

12,665residents (2020 Census)
18.8 sq miland area
1cities and towns
1congressional district
7voting precincts

See it on the mapAll of Michigan

City and county

City or townShare of ZIP residents
Haslett84%

CountyShare of ZIP residents
Ingham County86%
Clinton County8.7%
Shiawassee County5.7%

Town or county subdivisionShare of ZIP residents
Meridian charter township81%
Bath charter township8.7%
Woodhull township5.7%
Williamstown township4.8%

Congressional district

Congressional districtShare of ZIP residents
Michigan's 7th congressional district (MI-07)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 28100%

State house districtShare of ZIP residents
State House District 75100%

Voting precincts

7 voting precincts overlap ZIP 48840. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

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:48840")

ZIP 48840 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.