Boundary Atlas

ZIP code 19002: Ambler, PA

ZIP code 19002 is in Ambler (20% of residents), Spring House (12%), Maple Glen (10%) and Fort Washington (3.2%), in Montgomery County, Pennsylvania. 55% of its residents live outside city limits. It is in Pennsylvania's 4th congressional district (86%) and Pennsylvania's 1st congressional district (14%). Its state senate districts are State Senate District 12 (99%), State Senate District 7 (0.6%) and State Senate District 24 (<0.1%); its state house districts are State House District 151 (66%), State House District 61 (28%), State House District 153 (5.9%) and State House District 148 (0.6%).

33,279residents (2020 Census)
20.2 sq miland area
4cities and towns
2congressional districts
33voting precincts

See it on the mapAll of Pennsylvania

City and county

City or townShare of ZIP residents
Ambler20%
Spring House12%
Maple Glen10%
Fort Washington3.2%

CountyShare of ZIP residents
Montgomery County100%

Town or county subdivisionShare of ZIP residents
Upper Dublin township34%
Lower Gwynedd township23%
Ambler borough20%
Horsham township17%
Whitpain township5.2%
Whitemarsh township0.6%
Upper Gwynedd township<0.1%

Congressional districts

Congressional districtShare of ZIP residents
Pennsylvania's 4th congressional district (PA-04)86%
Pennsylvania's 1st congressional district (PA-01)14%

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 districtShare of ZIP residents
State Senate District 1299%
State Senate District 70.6%
State Senate District 24<0.1%

State house districtShare of ZIP residents
State House District 15166%
State House District 6128%
State House District 1535.9%
State House District 1480.6%

Voting precincts

33 voting precincts overlap ZIP 19002. 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:19002")

ZIP 19002 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.