Pennsylvania's 18th Congressional District
Click here for a map of the 18th Congressional District
The following communities make up the 18th Congressional District:
Allegheny County
- Baldwin Boro
- Baldwin Twp
- Bethel Park Boro
- Brentwood Boro
- Bridgeville Boro
- Carnegie Boro
- Castle Shannon Boro
- Churchill Boro
- Collier Twp
- Crafton Boro
- Crescent Twp
- Dormont Boro
- Elizabeth Boro
- Elizabeth Twp
- Findlay Twp
- Forward Twp
- Green Tree Boro
- Heidelberg Boro
- Jefferson Hills Boro
- Mc Donald Boro
- Monroeville Boro
- Moon Twp
- Mt Lebanon Twp
- North Fayette Twp
- North Versailles Twp
- Oakdale Boro
- Penn Hills Twp
- Pennsbury Village Twp
- Pitcairn Boro
- Pleasant Hills Boro
- Robinson Twp
- Rosslyn Farms Boro
- Scott Twp
- South Fayette Twp
- South Park Twp
- South Versailles
- Thornburg Boro
- Trafford Boro
- Upper St. Clair
- West Elizabeth
- White Oak Boro
- Whitehall Boro
- Wilkins Twp
Washington County
- Amwell Twp
- Blaine Twp
- Buffalo Twp
- Burgettstown Boro
- Canonsburg Boro
- Carroll Twp
- Cecil Twp
- Charleroi Boro
- Chartiers Twp
- Claysville Boro
- Cross Creek Twp
- Donegal Twp
- East & West Finlay Twps
- East Washington Boro
- Green Hills Boro
- Hanover Twp
- Hopewell Twp
- Independence Twp
- Jefferson Twp
- McDonald Boro
- Midway Boro
- Morriss Twp
- Mt Pleasant Twp
- North Franklin Twp
- North & South Strabane Twps
- Nottingham Twp
- Peters Twp
- Robinson Twp
- Smith Twp
- South Franklin Twp
- West Alexander Boro
- West Middletown Boro
Westmoreland County
- Adamsburg Boro
- Arona Boro
- Cook Twp
- Donegal Boro
- Donegal Twp
- East Huntington Twp
- Greensburg City
- Hempfield Twp
- Hunker Boro
- Irwin Boro
- Jeanette City
- Laurel Mountain Boro
- Ligonier Boro
- Ligonier Twp
- Madison Boro
- Manor Boro
- Mt Pleasant Twp
- New Stanton Boro
- North Huntington Twp
- North Irwin Boro
- Penn Boro
- Penn Twp
- Salem Twp
- Sewickley Twp
- South Greensburg Boro
- South Huntington Twp
- Southwest Greensburg Boro
- Trafford Boro
- Unity Twp
- Washington Twp
- Youngstown Boro
- Youngwood Boro
