Chisago County, MN Roof Snow Load - 35 psf
Chisago County, MN: your roof's ASCE 7 snow number, in plain English
Chisago County's roofs are built to hold 35 psf of snow, the ASCE 7-22 figure a permit reviewer checks first.
In depth, not weight: that's roughly 77 inches of fresh, light snow, 28 inches of old, settled snow, or as little as 7 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. A load this size is a serious structural matter; pre-modern-code homes and low-slope or flat-roofed sections are the ones most worth an inspection.
Chisago County in numbers
- Design roof snow load35 psf
- Ground snow load, ASCE 7 map50 psf
- National rank#120 of 2,758
- Minnesota rank#44 of 87
- Population59,105
- Annual snowfall, NOAA normal51.6 in.
- FIPS27025
Chisago County by the numbers
Nationally that's #120 out of 2,758 rated counties, the top 4%; within Minnesota alone, Chisago County ranks #44 of 87. Minnesota counties average 37.4 psf; Chisago County runs 2.4 psf lower than that.
Chisago County, FIPS 27025, is home to 59,105 people near 45.5054°N 92.9038°W. Its 50 psf ground snow load figure is the map value; 35 psf is what a roof is actually designed for.
Chisago County's snowfall, most winters
51.6 in. a year: that's Chisago County's NOAA 1991-2020 snowfall normal, measured at FOREST LAKE 5NE, MN US (12 mi away). See the density guide.
Before you rely on Chisago County's number
Treat the Chisago 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.