ZIP code 17527: Gap, PA
ZIP code 17527 is in Gap (25% of residents), in Lancaster County (93%) and Chester County (6.9%), Pennsylvania. 75% of its residents live outside city limits. It is in Pennsylvania's 11th congressional district (93%) and Pennsylvania's 6th congressional district (6.9%). Its state senate districts are State Senate District 13 (93%) and State Senate District 44 (6.9%); its state house districts are State House District 100 (89%), State House District 74 (6.9%) and State House District 99 (4.5%).
See it on the mapAll of Pennsylvania
City and county
| City or town | Share of ZIP residents |
|---|---|
| Gap | 25% |
| County | Share of ZIP residents |
|---|---|
| Lancaster County | 93% |
| Chester County | 6.9% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Salisbury township | 80% |
| Sadsbury township | 13% |
| West Sadsbury township | 4.0% |
| West Caln township | 2.5% |
| Sadsbury township | 0.3% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Pennsylvania's 11th congressional district (PA-11) | 93% |
| Pennsylvania's 6th congressional district (PA-06) | 6.9% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 13 | 93% |
| State Senate District 44 | 6.9% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 100 | 89% |
| State House District 74 | 6.9% |
| State House District 99 | 4.5% |
Voting precincts
7 voting precincts overlap ZIP 17527. 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:
related_geographies(id="us:zcta:17527")
ZIP 17527 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.