ZIP code 17603: Lancaster, PA
ZIP code 17603 is in Lancaster (45% of residents) and Millersville (1.4%), in Lancaster County, Pennsylvania. 54% of its residents live outside city limits. It is in Pennsylvania's 11th congressional district. Its state senate districts are State Senate District 13 (92%) and State Senate District 36 (7.9%); its state house districts are State House District 49 (53%), State House District 96 (18%), State House District 41 (18%) and State House District 97 (10%).
See it on the mapAll of Pennsylvania
City and county
| City or town | Share of ZIP residents |
|---|---|
| Lancaster | 45% |
| Millersville | 1.4% |
| Rohrerstown | 0.7% |
| County | Share of ZIP residents |
|---|---|
| Lancaster County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Lancaster city | 45% |
| Lancaster township | 24% |
| Manor township | 19% |
| East Hempfield township | 6.7% |
| Pequea township | 2.4% |
| Millersville borough | 1.4% |
| Manheim township | 1.2% |
| West Lampeter township | 0.5% |
| Conestoga township | 0.2% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Pennsylvania's 11th congressional district (PA-11) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Danene Sorace | 45% | |
| U.S. Representative (PA-11) | Lloyd Smucker (R) | 202-225-2411 | 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 13) | Scott Martin (R) | 717-397-1309 | 92% |
| State Senator (State Senate District 36) | James Malone (Democratic) | 717-627-0036 | 7.9% |
| State Representative (State House District 49) | Izzy Smith-Wade-El (Democratic) | 717-283-4218 | 53% |
| State Representative (State House District 96) | Nikki Rivera (Democratic) | 717-295-3157 | 18% |
| State Representative (State House District 41) | Brett Miller (R) | 717-295-5050 | 18% |
| State Representative (State House District 97) | Steve Mentzer (R) | 717-464-5285 | 10% |
From Wikidata (community-maintained); confirm on the city's website.
Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0); Mayors: Wikidata (CC0).
Local government
- Lancaster website: http://www.cityoflancasterpa.com/
- Lancaster laws: search for the Lancaster, Pennsylvania code of ordinances
- Millersville website: http://www.millersvilleborough.org
- Millersville laws: search for the Millersville, Pennsylvania code of ordinances
- Lancaster County website: http://www.co.lancaster.pa.us
- Lancaster County laws: search for the Lancaster County, Pennsylvania code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 13 | 92% |
| State Senate District 36 | 7.9% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 49 | 53% |
| State House District 96 | 18% |
| State House District 41 | 18% |
| State House District 97 | 10% |
Voting precincts
50 voting precincts overlap ZIP 17603. 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:17603")
ZIP 17603 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.