King George County, VA Roof Snow Load - 20 psf
What ASCE 7 says about snow load in King George County
That's King George County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. 17.5 psf is what the ground-load formula alone gives; King George County's 20 psf low-slope minimum (§7.3.4) beats it, so that figure is the one that governs on flat and low-pitch roofs.
Converted to something you can actually eyeball on a roof: about 44 in. of fresh powder, 16 in. once it settles and packs down, or just 4 in. if it's turned to ice. Modern-code homes carry a load like this without issue; an older addition, a carport, or any flat-roofed section is where it is worth checking first.
King George County, VA: quick facts
- Design roof snow load20 psf
- Ground snow load, ASCE 7 map25 psf
- National rank#871 of 2,758
- Virginia rank#44 of 110
- Population28,816
- Annual snowfall, NOAA normal11.5 in.
- FIPS51099
Where King George County's figure sits nationally
Out of 2,758 rated US counties, King George County sits at #871, the top 32% nationally - #44 of 110 within Virginia. 18.3 psf is Virginia's typical county figure - King George County beats it by 1.7 psf.
Near 38.2772°N 77.1626°W, FIPS 51099: King George County counts 28,816 residents and a 25 psf map value, which the code's own factors turn into 20 psf.
How much it actually snows in King George County
Most winters bring King George County roughly 11.5 in. of snow - NOAA's normal at CORBIN, VA US, 12.6 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
King George County's number above is ASCE 7-22's default case, not a custom calculation: ordinary residential occupancy, heated, sited on ground that's neither fully sheltered nor fully exposed. Any one of those changing - pitch, exposure, heating, occupancy - moves the real figure.
Nothing here substitutes for an address-level number. Get one free, in about a minute, from the ASCE 7 Hazard Tool using your own coordinates rather than King George County's county-wide figure. (How this figure is calculated.)