Boundary Atlas

ZIP code 48864: Okemos, MI

ZIP code 48864 is in Okemos (91% of residents), Haslett (3.1%) and Lansing (2.8%), in Ingham County, Michigan. It is in Michigan's 7th congressional district. Its state senate districts are State Senate District 28 (99%) and State Senate District 21 (0.8%); its state house districts are State House District 73 (86%) and State House District 75 (14%).

22,804residents (2020 Census)
20.1 sq miland area
3cities and towns
1congressional district
13voting precincts

See it on the mapAll of Michigan

City and county

City or townShare of ZIP residents
Okemos91%
Haslett3.1%
Lansing2.8%

CountyShare of ZIP residents
Ingham County100%

Town or county subdivisionShare of ZIP residents
Meridian charter township95%
Lansing city2.8%
Alaiedon township0.8%
Williamstown township0.7%
Wheatfield township0.5%

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 2899%
State Senate District 210.8%

State house districtShare of ZIP residents
State House District 7386%
State House District 7514%

Voting precincts

13 voting precincts overlap ZIP 48864. 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:48864")

ZIP 48864 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.