Millard County, UT Roof Snow Load - 15 psf
What ASCE 7 says about snow load in Millard County
That's Millard County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. The physics-based figure alone would be 10.5 psf, but ASCE 7's own low-slope minimum (§7.3.4) sets a floor of 15 psf for flat and low-pitch roofs here, which is the number that actually governs.
Converted to something you can actually eyeball on a roof: about 33 in. of fresh powder, 12 in. once it settles and packs down, or just 3 in. if it's turned to ice. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.
Millard County, UT: quick facts
- Design roof snow load15 psf
- Ground snow load, ASCE 7 map15 psf
- National rank#1,513 of 2,758
- Utah rank#5 of 10
- Population13,572
- Annual snowfall, NOAA normal19.6 in.
- FIPS49027
Where Millard County's figure sits nationally
Out of 2,758 rated US counties, Millard County sits at #1,513, the top 55% nationally - #5 of 10 within Utah. Utah counties average 16.6 psf; Millard County runs 1.6 psf lower than that.
Near 38.9567°N 113.1331°W, FIPS 49027: Millard County counts 13,572 residents and a 15 psf map value, which the code's own factors turn into 15 psf.
How much it actually snows in Millard County
Most winters bring Millard County roughly 19.6 in. of snow - NOAA's normal at DESERET, UT US, 34.4 mi off. Worth noting: the nearest station reporting snowfall normals sits 34.4 mi from Millard County's center, so treat this as a regional figure rather than an exact one. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Millard 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 Millard County's county-wide figure. (How this figure is calculated.)