Ozaukee County, WI Roof Snow Load - 21 psf
What ASCE 7 says about snow load in Ozaukee County
That's Ozaukee County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from.
Converted to something you can actually eyeball on a roof: about 46.2 in. of fresh powder, 16.8 in. once it settles and packs down, or just 4.2 in. if it's turned to ice. This is a meaningful design load - most modern-code homes handle it fine, though an addition, a carport or a flat-roofed section can be a weak spot.
Ozaukee County, WI: quick facts
- Design roof snow load21 psf
- Ground snow load, ASCE 7 map30 psf
- National rank#421 of 2,758
- Wisconsin rank#62 of 72
- Population93,956
- Annual snowfall, NOAA normal48.6 in.
- FIPS55089
Where Ozaukee County's figure sits nationally
Out of 2,758 rated US counties, Ozaukee County sits at #421, the top 15% nationally - #62 of 72 within Wisconsin. That's 9.9 psf below Wisconsin's own county-average design load of 30.9 psf.
Near 43.5018°N 87.8476°W, FIPS 55089: Ozaukee County counts 93,956 residents and a 30 psf map value, which the code's own factors turn into 21 psf.
How much it actually snows in Ozaukee County
Most winters bring Ozaukee County roughly 48.6 in. of snow - NOAA's normal at HINGHAM WWTP, WI US, 10.1 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Ozaukee 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 Ozaukee County's county-wide figure. (How this figure is calculated.)