Light

ZIP Code 63020

Jefferson County, Missouri — De Soto

20PSF (Ground Snow Load)
LightClassification

What This Means

Jefferson County, Missouri 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 Code63020
CountyJefferson
CityDe Soto
StateMissouri (MO)
Ground Snow Load20 PSF — Light
Classification Range1 - 20 PSF
Data QualityMeasured

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

Roof Snow Load: 14 PSF

ⓘ Simplified estimate for flat roofs. Sloped roofs, drift zones, and unbalanced loads need additional calculations. Consult a structural engineer for final design.

Jefferson County Snow Load Map

Counties colored by snow load classification. Gray = No Load, Blue = Light, Amber = Moderate, Orange = Heavy, Red = Extreme, Purple = Case Study.

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63017 20 PSF Light 63018 20 PSF Light 63019 20 PSF Light 63021 20 PSF Light 63022 20 PSF Light 63023 20 PSF Light

Frequently Asked Questions

What is the ground snow load for ZIP code 63020?

ZIP code 63020 is in Jefferson County, Missouri, with a ground snow load of 20 PSF, classified as light per ASCE 7-22.

Is my roof strong enough for snow in 63020?

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 63020 in?

ZIP code 63020 is in Jefferson County, Missouri (MO).