Boundary Atlas

ZIP code 04103: Portland, ME

ZIP code 04103 is in Portland, in Cumberland County, Maine. It is in Maine's 1st congressional district. Its state senate districts are State Senate District 27 (70%) and State Senate District 28 (30%); its state house districts are State House District 114 (28%), State House District 115 (23%), State House District 112 (20%), State House District 113 (18%) and State House District 116 (12%).

31,185residents (2020 Census)
10.2 sq miland area
1cities and towns
1congressional district
6voting precincts

See it on the mapAll of Maine

City and county

City or townShare of ZIP residents
Portland100%

CountyShare of ZIP residents
Cumberland County100%

Town or county subdivisionShare of ZIP residents
Portland city100%

Congressional district

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

Elected officials

OfficeMemberContactShare of residents
MayorMark N. Dion207-756-8241100%
U.S. Representative (ME-01)Chellie Pingree (D)202-225-6116100%
U.S. SenatorAngus S. King, Jr. (I)202-224-5344 · contact formstatewide
U.S. SenatorSusan M. Collins (R)202-224-2523 · contact formstatewide
State Senator (State Senate District 27)Jill Duson (Democratic)70%
State Senator (State Senate District 28)Rachel Talbot Ross (Democratic)30%
State Representative (State House District 114)Dylan Pugh (Democratic)28%
State Representative (State House District 115)Michael Brennan (Democratic)23%
State Representative (State House District 112)Ed Crockett (I)20%
State Representative (State House District 113)Grayson Lookner (Democratic)18%
State Representative (State House District 116)Sam Zager (Democratic)12%

Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); 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 2770%
State Senate District 2830%

State house districtShare of ZIP residents
State House District 11428%
State House District 11523%
State House District 11220%
State House District 11318%
State House District 11612%

Voting precincts

6 voting precincts overlap ZIP 04103. 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:

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ZIP 04103 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.