Boundary Atlas

Greencastle, Pennsylvania

Greencastle is a borough in Franklin County, Pennsylvania, with 4,251 residents in 2020. It is in Pennsylvania's 13th congressional district. Its state senate district is State Senate District 33; its state house district is State House District 90.

4,251residents (2020 Census)
1.6 sq miland area
1ZIP codes
1congressional district

County

CountyShare of residents
Franklin County100%

Congressional district

Congressional districtShare of residents
Pennsylvania's 13th congressional district (PA-13)100%

Elected officials

OfficeMemberContactShare of residents
MayorBen Thomas Jr.717-597-7143citywide
U.S. Representative (PA-13)John Joyce (R)202-225-2431100%
U.S. SenatorDavid McCormick (R)202-224-6324 · contact formstatewide
U.S. SenatorJohn Fetterman (D)202-224-4254 · contact formstatewide
State Senator (State Senate District 33)Doug Mastriano (R)717-264-6100100%
State Representative (State House District 90)Chad Reichard (R)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

State legislative districts

State senate districtShare of residents
State Senate District 33100%

State house districtShare of residents
State House District 90100%

ZIP codes

Percentages mark ZIPs only partly in Greencastle: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Greencastle's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:place:4230896")

Greencastle here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.