Last updated: October 2026

Pennsylvania's old housing stock and freeze-thaw winters mean a lot of siding is layered: newer panels over older materials, with the oldest layer still doing quiet damage. Across the 72 Pennsylvania cities we track, an average of 79.0% of homes were built before 1980 (U.S. Census Bureau, ACS 2020–2024) with average annual rainfall of 42.6 in/yr (NOAA 1991–2020 normals).

City-by-city guides

• Siding in Abington, PA — pop. 58,664
• Siding in Allentown, PA — pop. 125,976
• Siding in Allison Park, PA — pop. 22,045
• Siding in Altoona, PA — pop. 43,196
• Siding in Ardmore, PA — pop. 13,909
• Siding in Bensalem, PA — pop. 62,818
• Siding in Bethel Park, PA — pop. 32,881
• Siding in Bethlehem, PA — pop. 77,956
• Siding in Bloomsburg, PA — pop. 13,024
• Siding in Broomall, PA — pop. 10,679
• Siding in Butler, PA — pop. 13,212
• Siding in Carlisle, PA — pop. 21,852
• Siding in Chambersburg, PA — pop. 22,319
• Siding in Coatesville, PA — pop. 13,353
• Siding in Columbia, PA — pop. 10,278
• Siding in Cranberry Township, PA — pop. data pending
• Siding in Drexel Hill, PA — pop. 30,451
• Siding in East Stroudsburg, PA — pop. 9,319
• Siding in Easton, PA — pop. 29,739
• Siding in Elizabethtown, PA — pop. 11,925
• Siding in Emmaus, PA — pop. 11,889
• Siding in Ephrata, PA — pop. 13,772
• Siding in Erie, PA — pop. 93,850
• Siding in Greensburg, PA — pop. 14,741
• Siding in Hanover, PA — pop. 16,584
• Siding in Harrisburg, PA — pop. 50,287
• Siding in Havertown, PA — pop. data pending
• Siding in Hazleton, PA — pop. 30,111
• Siding in Hermitage, PA — pop. 16,041
• Siding in Hershey, PA — pop. 14,242
• Siding in Horsham, PA — pop. 16,005
• Siding in Indiana, PA — pop. 14,212
• Siding in Johnstown, PA — pop. 18,087
• Siding in King Of Prussia, PA — pop. 25,857
• Siding in Kingston, PA — pop. 13,397
• Siding in Lancaster, PA — pop. 57,719
• Siding in Landenberg, PA — pop. data pending
• Siding in Lansdale, PA — pop. 19,011
• Siding in Lansdowne, PA — pop. 11,122
• Siding in Lebanon, PA — pop. 26,536
• Siding in Levittown, PA — pop. 50,926
• Siding in Mckeesport, PA — pop. 17,380
• Siding in Meadville, PA — pop. 12,577
• Siding in Monroeville, PA — pop. 28,295
• Siding in Montgomeryville, PA — pop. 13,388
• Siding in Mountain Top, PA — pop. 11,850
• Siding in Murrysville, PA — pop. 20,817
• Siding in Nanticoke, PA — pop. 10,653
• Siding in Natrona Heights, PA — pop. 6,903
• Siding in New Castle, PA — pop. 21,579
• Siding in New Kensington, PA — pop. 12,011
• Siding in Norristown, PA — pop. 35,893
• Siding in North Versailles, PA — pop. 9,845
• Siding in Oil City, PA — pop. 9,468
• Siding in Phoenixville, PA — pop. 19,452
• Siding in Pittsburgh, PA — pop. 304,759
• Siding in Pottstown, PA — pop. 23,476
• Siding in Pottsville, PA — pop. 13,364
• Siding in Reading, PA — pop. 95,242
• Siding in Scranton, PA — pop. 76,033
• Siding in Sharon, PA — pop. 12,936
• Siding in Springfield, PA — pop. data pending
• Siding in State College, PA — pop. 41,050
• Siding in Washington, PA — pop. 13,368
• Siding in Wayne, PA — pop. 6,635
• Siding in Waynesboro, PA — pop. 11,047
• Siding in West Chester, PA — pop. 20,666
• Siding in West Mifflin, PA — pop. 19,190
• Siding in Whitehall, PA — pop. 14,811
• Siding in Williamsport, PA — pop. 27,612
• Siding in Willow Grove, PA — pop. 14,131
• Siding in York, PA — pop. 44,938

How to use these guides

Each city page pairs siding how-it-works guidance — warning signs, the inspection process, materials, repair vs. replace — with that city's real housing-age and rainfall data, so you can see which pattern dominates locally. When you talk to contractors, ask how their plan accounts for the local weather, and whether they probed for rot before quoting a scope.