Mills County, TX Roof Snow Load - 5 psf
Mills County, TX: your roof's ASCE 7 snow number, in plain English
Mills County's roofs are built to hold 5 psf of snow, the ASCE 7-22 figure a permit reviewer checks first. §7.3.4's low-slope minimum of 5 psf is what actually governs on a flat or low-pitch roof here - higher than the 3.5 psf the base ground-load formula gives.
In depth, not weight: that's roughly 11 inches of fresh, light snow, 4 inches of old, settled snow, or as little as 1 inches of solid ice - snow that heavy is rare here but ice from a freeze-thaw cycle adds up far faster than the depth suggests. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.
Mills County at a glance
- Design roof snow load5 psf
- Ground snow load, ASCE 7 map5 psf
- National rank#2,435 of 2,758
- Texas rank#183 of 254
- Population4,563
- Annual snowfall, NOAA normal0.2 in.
- FIPS48333
Mills County by the numbers
Nationally that's #2,435 out of 2,758 rated counties, the top 88%; within Texas alone, Mills County ranks #183 of 254. Texas counties average 5.4 psf; Mills County runs 0.4 psf lower than that.
Mills County, FIPS 48333, is home to 4,563 people near 31.4949°N 98.5946°W. Its 5 psf ground snow load figure is the map value; 5 psf is what a roof is actually designed for.
Mills County's snowfall, most winters
0.2 in. a year: that's Mills County's NOAA 1991-2020 snowfall normal, measured at CENTER CITY, TX US (11 mi away). See the density guide.
Before you rely on Mills County's number
Treat the Mills County figure as a starting point, not a final answer: it assumes standard occupancy, a heated structure and a moderately sheltered site, per ASCE 7-22's own defaults. Exposed terrain, an unheated building or a steeper roof all shift the real number.
For a real application, skip the county number and go straight to the ASCE 7 Hazard Tool - enter your coordinates and it returns a site-specific figure a plan reviewer will recognize. See the methodology guide.