Oklahoma County, OK Roof Snow Load - 10 psf
What ASCE 7 says about snow load in Oklahoma County
That's Oklahoma County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. Flat and low-pitch roofs in Oklahoma County are actually governed by ASCE 7's §7.3.4 minimum of 10 psf, not the 7 psf the ground-load formula alone would produce.
Converted to something you can actually eyeball on a roof: about 22 in. of fresh powder, 8 in. once it settles and packs down, or just 2 in. if it's turned to ice. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.
Oklahoma County, OK: quick facts
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,649 of 2,758
- Oklahoma rank#19 of 77
- Population816,490
- Annual snowfall, NOAA normal2.5 in.
- FIPS40109
Where Oklahoma County's figure sits nationally
Out of 2,758 rated US counties, Oklahoma County sits at #1,649, the top 60% nationally - #19 of 77 within Oklahoma. 11 psf is Oklahoma's typical county figure - Oklahoma County comes in 1 psf under it.
Near 35.5546°N 97.4094°W, FIPS 40109: Oklahoma County counts 816,490 residents and a 10 psf map value, which the code's own factors turn into 10 psf.
How much it actually snows in Oklahoma County
Most winters bring Oklahoma County roughly 2.5 in. of snow - NOAA's normal at ARCADIA 3 WSW, OK US, 7.3 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Oklahoma 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 Oklahoma County's county-wide figure. (How this figure is calculated.)