Boundary Atlas

ZIP code 48191: Augusta, MI

ZIP code 48191 is in Washtenaw County (96%) and Monroe County (4.4%), Michigan, outside any city or Census-designated place. It is in Michigan's 6th congressional district (96%) and Michigan's 5th congressional district (4.4%). Its state senate districts are State Senate District 15 (96%) and State Senate District 16 (4.4%); its state house districts are State House District 31 (99%) and State House District 32 (1.0%).

3,980residents (2020 Census)
16.1 sq miland area
0cities and towns
2congressional districts
3voting precincts

See it on the mapAll of Michigan

City and county

Outside any city or Census-designated place.


CountyShare of ZIP residents
Washtenaw County96%
Monroe County4.4%

Town or county subdivisionShare of ZIP residents
Augusta charter township95%
London township4.4%
Ypsilanti charter township1.0%

Congressional districts

Congressional districtShare of ZIP residents
Michigan's 6th congressional district (MI-06)96%
Michigan's 5th congressional district (MI-05)4.4%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MI-06)Debbie Dingell (D)202-225-407196%
U.S. Representative (MI-05)Tim Walberg (R)202-225-62764.4%
U.S. SenatorElissa Slotkin (D)202-224-4822statewide
U.S. SenatorGary C. Peters (D)202-224-6221 · contact formstatewide
State Senator (State Senate District 15)Jeff Irwin (Democratic)96%
State Senator (State Senate District 16)Joe Bellino (R)4.4%
State Representative (State House District 31)Reggie Miller (Democratic)99%
State Representative (State House District 32)Jimmie Wilson (Democratic)1.0%

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 ZIP residents
State Senate District 1596%
State Senate District 164.4%

State house districtShare of ZIP residents
State House District 3199%
State House District 321.0%

Voting precincts

3 voting precincts overlap ZIP 48191. 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:48191")

ZIP 48191 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.