Snow Load in Pennsylvania

67 counties — Average 28.3 PSF (Moderate)

1
38
28
Light (1.5%) Moderate (56.7%) Case Study (41.8%)
Light — 1 county with 1–20 PSF. Standard roof construction is typically sufficient.
Moderate — 38 counties with 21–40 PSF. Roofs need reinforced framing to handle regular snow buildup.
Case Study — 28 counties where snow loads vary too much to assign one number. A licensed engineer must determine the load for your specific site.

Based on ASCE 7-22, the national standard for structural snow loads used by engineers and building codes across the US.

Pennsylvania Snow Load Map

Counties colored by snow load classification.

Pennsylvania

Check Your ZIP Code

All 67 Counties — By Snow Load

CountyClassificationSnow Load
Adams Moderate 30 PSF
Allegheny Moderate 25 PSF
Armstrong Case Study Site Study
Beaver Moderate 25 PSF
Bedford Case Study Site Study
Berks Moderate 30 PSF
Blair Moderate 30 PSF
Bradford Moderate 30 PSF
Bucks Case Study Site Study
Butler Moderate 25 PSF
Cambria Case Study Site Study
Cameron Moderate 30 PSF
Carbon Case Study Site Study
Centre Moderate 30 PSF
Chester Moderate 25 PSF
Clarion Moderate 25 PSF
Clearfield Case Study Site Study
Clinton Moderate 30 PSF
Columbia Moderate 30 PSF
Crawford Moderate 25 PSF
Cumberland Moderate 25 PSF
Dauphin Moderate 35 PSF
Delaware Moderate 25 PSF
Elk Moderate 30 PSF
Erie Case Study Site Study
Fayette Case Study Site Study
Forest Moderate 30 PSF
Franklin Moderate 30 PSF
Fulton Case Study Site Study
Greene Light 20 PSF
Huntingdon Moderate 30 PSF
Indiana Case Study Site Study
Jefferson Case Study Site Study
Juniata Moderate 30 PSF
Lackawanna Case Study Site Study
Lancaster Moderate 25 PSF
Lawrence Moderate 25 PSF
Lebanon Moderate 30 PSF
Lehigh Case Study Site Study
Luzerne Case Study Site Study
Lycoming Moderate 35 PSF
McKean Case Study Site Study
Mercer Moderate 25 PSF
Mifflin Moderate 25 PSF
Monroe Case Study Site Study
Montgomery Case Study Site Study
Montour Case Study Site Study
Northampton Case Study Site Study
Northumberland Moderate 35 PSF
Perry Moderate 25 PSF
Philadelphia Moderate 25 PSF
Pike Case Study Site Study
Potter Case Study Site Study
Schuylkill Case Study Site Study
Snyder Moderate 35 PSF
Somerset Case Study Site Study
Sullivan Moderate 30 PSF
Susquehanna Case Study Site Study
Tioga Moderate 30 PSF
Union Moderate 35 PSF
Venango Moderate 30 PSF
Warren Case Study Site Study
Washington Moderate 25 PSF
Wayne Case Study Site Study
Westmoreland Case Study Site Study
Wyoming Case Study Site Study
York Moderate 25 PSF

Source: ASCE 7-22 ground snow load data

Frequently Asked Questions

What is the snow load in Pennsylvania?

Pennsylvania has an average ground snow load of 28.3 PSF, classified as moderate. Out of 67 counties: 1 light, 38 moderate, 28 case study.

Which Pennsylvania counties have the highest snow load?

28 counties require a site-specific case study. See the county table above for a complete breakdown.

How do I check snow load for my Pennsylvania address?

Enter your ZIP code in the search box above to see your area's ASCE 7-22 ground snow load, classification, and roof snow load calculator.

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