Calhoun County, MS Roof Snow Load - 10 psf
What ASCE 7 says about snow load in Calhoun County
That's Calhoun County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. 7 psf is what the ground-load formula alone gives; Calhoun County's 10 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 22 in. of fresh powder, 8 in. once it settles and packs down, or just 2 in. if it's turned to ice. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.
Calhoun County at a glance
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,972 of 2,758
- Mississippi rank#25 of 82
- Population12,754
- Annual snowfall, NOAA normal0.6 in.
- FIPS28013
Where Calhoun County's figure sits nationally
Out of 2,758 rated US counties, Calhoun County sits at #1,972, the top 72% nationally - #25 of 82 within Mississippi. That's 3.5 psf above Mississippi's own county-average design load of 6.5 psf.
Near 33.9366°N 89.3371°W, FIPS 28013: Calhoun County counts 12,754 residents and a 10 psf map value, which the code's own factors turn into 10 psf.
How much it actually snows in Calhoun County
Most winters bring Calhoun County roughly 0.6 in. of snow - NOAA's normal at BRUCE 2 W, MS US, 4.3 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Calhoun 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 Calhoun County's county-wide figure. See the methodology guide.