Perry County, MS Roof Snow Load - 5 psf
What ASCE 7 says about snow load in Perry County
That's Perry County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. ASCE 7's low-slope-roof minimum (§7.3.4) raises the governing figure to 5 psf - higher than the 3.5 psf the ground-load formula alone would give, and the code says use the larger one.
Converted to something you can actually eyeball on a roof: about 11 in. of fresh powder, 4 in. once it settles and packs down, or just 1 in. if it's turned to ice. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.
Perry County in numbers
- Design roof snow load5 psf
- Ground snow load, ASCE 7 map5 psf
- National rank#2,371 of 2,758
- Mississippi rank#64 of 82
- Population11,406
- Annual snowfall, NOAA normal0.5 in.
- FIPS28111
Where Perry County's figure sits nationally
Out of 2,758 rated US counties, Perry County sits at #2,371, the top 86% nationally - #64 of 82 within Mississippi. Mississippi counties average 6.5 psf; Perry County runs 1.5 psf lower than that.
Near 31.1693°N 88.9888°W, FIPS 28111: Perry County counts 11,406 residents and a 5 psf map value, which the code's own factors turn into 5 psf.
How much it actually snows in Perry County
Most winters bring Perry County roughly 0.5 in. of snow - NOAA's normal at BEAUMONT EXPSTATION, MS US, 6.2 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Perry 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 Perry County's county-wide figure. (How this figure is calculated.)