Boundary Atlas

ZIP code 04086: Topsham, ME

ZIP code 04086 is in Topsham (69% of residents), in Sagadahoc County, Maine. 31% of its residents live outside city limits. It is in Maine's 1st congressional district. Its state senate district is State Senate District 24; its state house districts are State House District 51 (90%) and State House District 98 (9.7%).

9,560residents (2020 Census)
32.2 sq miland area
1cities and towns
1congressional district
1voting precincts

See it on the mapAll of Maine

City and county

City or townShare of ZIP residents
Topsham69%

CountyShare of ZIP residents
Sagadahoc County100%

Town or county subdivisionShare of ZIP residents
Topsham town100%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 24100%

State house districtShare of ZIP residents
State House District 5190%
State House District 989.7%

Voting precincts

1 voting precinct overlap ZIP 04086. 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:04086")

ZIP 04086 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.