ZIP code 17120: Harrisburg, PA

ZIP code 17120 is in Harrisburg, in Dauphin County, Pennsylvania. It is in Pennsylvania's 10th congressional district. Its state senate district is State Senate District 15; its state house district is State House District 103.

4residents (2020 Census)

0.1 sq miland area

1cities and towns

1congressional district

2voting precincts

See it on the map All of Pennsylvania

City and county

City or town	Share of ZIP residents
Harrisburg	100%

County	Share of ZIP residents
Dauphin County	100%

Town or county subdivision	Share of ZIP residents
Harrisburg city	100%

Congressional district

Congressional district	Share of ZIP residents
Pennsylvania's 10th congressional district (PA-10)	100%

Elected officials

Office	Member	Contact	Share of residents
Mayor	Wanda R. D. Williams	717-255-3040	100%
U.S. Representative (PA-10)	Scott Perry (R)	202-225-5836	100%
U.S. Senator	David McCormick (R)	202-224-6324 · contact form	statewide
U.S. Senator	John Fetterman (D)	202-224-4254 · contact form	statewide
State Senator (State Senate District 15)	Patty Kim (Democratic)	717-346-6278	100%
State Representative (State House District 103)	Nate Davidson (Democratic)	717-303-3715	100%

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

Harrisburg website: https://www.harrisburgpa.gov/
Harrisburg laws: search for the Harrisburg, Pennsylvania code of ordinances
Dauphin County website: https://www.dauphincounty.gov
Dauphin County laws: search for the Dauphin County, Pennsylvania code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 15	100%

State house district	Share of ZIP residents
State House District 103	100%

Voting precincts

2 voting precincts overlap ZIP 17120. 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:

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ZIP 17120 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.