Boundary Atlas

ZIP code 17801: Sunbury, PA

ZIP code 17801 is in Sunbury (60% of residents) and Snydertown (1.9%), in Northumberland County, Pennsylvania. 39% of its residents live outside city limits. It is in Pennsylvania's 9th congressional district. Its state senate district is State Senate District 27; its state house districts are State House District 108 (89%) and State House District 107 (11%).

16,332residents (2020 Census)
66.1 sq miland area
2cities and towns
1congressional district
13voting precincts

See it on the mapAll of Pennsylvania

City and county

City or townShare of ZIP residents
Sunbury60%
Snydertown1.9%

CountyShare of ZIP residents
Northumberland County100%

Town or county subdivisionShare of ZIP residents
Sunbury city60%
Upper Augusta township15%
Rockefeller township12%
Lower Augusta township6.3%
Shamokin township4.3%
Snydertown borough1.9%
Rush township0.5%

Congressional district

Congressional districtShare of ZIP residents
Pennsylvania's 9th congressional district (PA-09)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 27100%

State house districtShare of ZIP residents
State House District 10889%
State House District 10711%

Voting precincts

13 voting precincts overlap ZIP 17801. 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:17801")

ZIP 17801 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.