ZIP Code 62237
Perry County, Illinois — Swanwick
What This Means
Perry County, Illinois has a light ground snow load of 20 PSF per ASCE 7-22. At this level, most standard residential roofs are designed to handle the load without issue. However, flat or low-slope roofs should still be checked for drifting and sliding snow.
Snow Load Details
| ZIP Code | 62237 |
| County | Perry |
| City | Swanwick |
| State | Illinois (IL) |
| Ground Snow Load | 20 PSF — Light |
| Classification Range | 1 - 20 PSF |
| Data Quality | Measured |
Source: ASCE 7-22 ground snow load polygons via ArcGIS
Roof Snow Load Calculator
ASCE 7-22 flat roof formula: pf = 0.7 × Ce × Ct × Is × pg
Your ground snow load (pg): 20 PSF
ⓘ Simplified estimate for flat roofs. Sloped roofs, drift zones, and unbalanced loads need additional calculations. Consult a structural engineer for final design.
Perry County Snow Load Map
Counties colored by snow load classification. Gray = No Load, Blue = Light, Amber = Moderate, Orange = Heavy, Red = Extreme, Purple = Case Study.
Check Another ZIP Code
Nearby ZIP Codes
Frequently Asked Questions
What is the ground snow load for ZIP code 62237?
ZIP code 62237 is in Perry County, Illinois, with a ground snow load of 20 PSF, classified as light per ASCE 7-22.
Is my roof strong enough for snow in 62237?
With a light ground snow load of 20 PSF, standard residential construction typically handles this load, but verify with your local building code.
What county is ZIP code 62237 in?
ZIP code 62237 is in Perry County, Illinois (IL).