Maricopa County, AZ Roof Snow Load - 0 psf
Maricopa County, AZ: your roof's ASCE 7 snow number, in plain English
Maricopa County's roofs are built to hold 0 psf of snow, the ASCE 7-22 figure a permit reviewer checks first.
In depth, not weight: that's roughly 0 inches of fresh, light snow, 0 inches of old, settled snow, or as little as 0 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. Snow load is not a factor in roof design here at all; the ground snow load figure maps to zero.
Maricopa County at a glance
- Design roof snow load0 psf
- Ground snow load, ASCE 7 map0 psf
- National rank#2,473 of 2,758
- Arizona rank#2 of 13
- Population4,673,096
- Annual snowfall, NOAA normal0 in.
- FIPS04013
Maricopa County by the numbers
Nationally that's #2,473 out of 2,758 rated counties, the top 90%; within Arizona alone, Maricopa County ranks #2 of 13. Arizona counties average 0.4 psf; Maricopa County runs 0.4 psf lower than that.
Maricopa County, FIPS 04013, is home to 4,673,096 people near 33.3452°N 112.4989°W. Its 0 psf ground snow load figure is the map value; 0 psf is what a roof is actually designed for.
Maricopa County's snowfall, most winters
0 in. a year: that's Maricopa County's NOAA 1991-2020 snowfall normal, measured at LITCHFIELD PARK, AZ US (13.2 mi away). See the density guide.
Before you rely on Maricopa County's number
Treat the Maricopa 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.