Door County, WI Roof Snow Load - 35 psf
What ASCE 7 says about snow load in Door County
That's Door 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 77 in. of fresh powder, 28 in. once it settles and packs down, or just 7 in. if it's turned to ice. A serious structural load. Homes built before modern snow-load provisions, or with low-slope/flat roof sections, are the ones most worth having checked.
Door County at a glance
- Design roof snow load35 psf
- Ground snow load, ASCE 7 map50 psf
- National rank#144 of 2,758
- Wisconsin rank#31 of 72
- Population30,512
- Annual snowfall, NOAA normal61.6 in.
- FIPS55029
Where Door County's figure sits nationally
Out of 2,758 rated US counties, Door County sits at #144, the top 5% nationally - #31 of 72 within Wisconsin. Wisconsin counties average 30.9 psf; Door County runs 4.1 psf higher than that.
Near 45.0934°N 87.0487°W, FIPS 55029: Door County counts 30,512 residents and a 50 psf map value, which the code's own factors turn into 35 psf.
How much it actually snows in Door County
Most winters bring Door County roughly 61.6 in. of snow - NOAA's normal at EPHRAIM 1NE-WWTP, WI US, 7.4 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Door 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 Door County's county-wide figure. See the methodology guide.