ZIP code 19001 is in Roslyn (53% of residents) and Willow Grove (7.8%), in Montgomery County, Pennsylvania. 39% of its residents live outside city limits. It is in Pennsylvania's 4th congressional district. Its state senate districts are State Senate District 4 (99%) and State Senate District 12 (1.1%); its state house districts are State House District 153 (62%), State House District 152 (37%) and State House District 151 (0.1%).
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).
23 voting precincts overlap ZIP 19001.
Map them, with each precinct's share of the ZIP's residents.
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related_geographies(id="us:zcta:19001")
ZIP 19001 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.