Snow Load in Colorado

64 counties — Average 17.7 PSF (Light)

19
3
42
Light (29.7%) Moderate (4.7%) Case Study (65.6%)
Light — 19 counties with 1–20 PSF. Standard roof construction is typically sufficient.
Moderate — 3 counties with 21–40 PSF. Roofs need reinforced framing to handle regular snow buildup.
Case Study — 42 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.

Colorado Snow Load Map

Counties colored by snow load classification.

Colorado

Check Your ZIP Code

All 64 Counties — By Snow Load

CountyClassificationSnow Load
Adams Case Study Site Study
Alamosa Case Study Site Study
Arapahoe Light 20 PSF
Archuleta Case Study Site Study
Baca Light 10 PSF
Bent Light 15 PSF
Boulder Case Study Site Study
Broomfield Case Study Site Study
Chaffee Case Study Site Study
Cheyenne Light 10 PSF
Clear Creek Case Study Site Study
Conejos Case Study Site Study
Costilla Case Study Site Study
Crowley Light 10 PSF
Custer Case Study Site Study
Delta Case Study Site Study
Denver Light 20 PSF
Dolores Case Study Site Study
Douglas Case Study Site Study
Eagle Case Study Site Study
El Paso Case Study Site Study
Elbert Light 20 PSF
Fremont Case Study Site Study
Garfield Case Study Site Study
Gilpin Case Study Site Study
Grand Case Study Site Study
Gunnison Case Study Site Study
Hinsdale Case Study Site Study
Huerfano Case Study Site Study
Jackson Case Study Site Study
Jefferson Case Study Site Study
Kiowa Light 10 PSF
Kit Carson Light 20 PSF
La Plata Case Study Site Study
Lake Case Study Site Study
Larimer Case Study Site Study
Las Animas Light 20 PSF
Lincoln Light 20 PSF
Logan Light 20 PSF
Mesa Case Study Site Study
Mineral Case Study Site Study
Moffat Moderate 30 PSF
Montezuma Case Study Site Study
Montrose Case Study Site Study
Morgan Light 20 PSF
Otero Light 10 PSF
Ouray Case Study Site Study
Park Case Study Site Study
Phillips Moderate 25 PSF
Pitkin Case Study Site Study
Prowers Light 15 PSF
Pueblo Light 10 PSF
Rio Blanco Case Study Site Study
Rio Grande Case Study Site Study
Routt Case Study Site Study
Saguache Case Study Site Study
San Juan Case Study Site Study
San Miguel Case Study Site Study
Sedgwick Moderate 25 PSF
Summit Case Study Site Study
Teller Case Study Site Study
Washington Light 20 PSF
Weld Light 20 PSF
Yuma Light 20 PSF

Source: ASCE 7-22 ground snow load data

Frequently Asked Questions

What is the snow load in Colorado?

Colorado has an average ground snow load of 17.7 PSF, classified as light. Out of 64 counties: 19 light, 3 moderate, 42 case study.

Which Colorado counties have the highest snow load?

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

How do I check snow load for my Colorado 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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