Marion County, MS Roof Snow Load - 0 psf

How much snow is too much for a roof in Marion County, MS?

Picture it, not just weigh it: 0 in. if it's fresh powder, 0 in. once it settles, or a mere 0 in. if it's ice. This county’s ground snow load maps to zero - snow load is not a driver of roof design here.

Marion County, MS: quick facts

• Design roof snow load0 psf
• Ground snow load, ASCE 7 map0 psf
• National rank#2,658 of 2,758
• Mississippi rank#77 of 82
• Population24,008
• Annual snowfall, NOAA normal0.2 in.
• FIPS28091

How Marion County compares

0 psf ranks #2,658 of 2,758 US counties with a mapped snow load (top 96%) - and #77 of 82 in Mississippi. That's 6.5 psf below Mississippi's own county-average design load of 6.5 psf.

Population 24,008 (FIPS 28091), roughly 31.2315°N 89.8223°W. The 0 psf ground snow load ASCE 7-22 maps here becomes 0 psf once the code's own design factors are applied.

Typical snowfall in Marion County, MS

NOAA's 30-year normal for Marion County: 0.2 in. of snow a year, from the TYLERTOWN 5ESE, MS US station. (fresh vs. packed vs. ice explains why.)

What this Marion County figure assumes

This is a county-level reference figure for a typical heated home built to Risk Category II (ordinary residential), on a partially exposed lot - the assumptions ASCE 7-22 itself treats as the default case. A steeper roof, a fully exposed hilltop lot, an unheated structure, or a higher risk category all change the actual number.

Marion County's permit office wants an address-specific figure, not this county average - the ASCE 7 Hazard Tool is free, takes under a minute, and outputs a PDF most reviewers accept. Details: the calculation guide.