Boundary Atlas

ZIP code 49751: Charlton, MI

ZIP code 49751 is in Otsego County (88%) and Montmorency County (12%), Michigan, outside any city or Census-designated place. It is in Michigan's 1st congressional district. Its state senate district is State Senate District 36; its state house districts are State House District 105 (88%) and State House District 106 (12%).

2,014residents (2020 Census)
155.1 sq miland area
0cities and towns
1congressional district
5voting precincts

See it on the mapAll of Michigan

City and county

Outside any city or Census-designated place.


CountyShare of ZIP residents
Otsego County88%
Montmorency County12%

Town or county subdivisionShare of ZIP residents
Charlton township58%
Chester township30%
Vienna township9.3%
Albert township2.6%
Montmorency township0.2%

Congressional district

Congressional districtShare of ZIP residents
Michigan's 1st congressional district (MI-01)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 36100%

State house districtShare of ZIP residents
State House District 10588%
State House District 10612%

Voting precincts

5 voting precincts overlap ZIP 49751. 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:49751")

ZIP 49751 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.