Mich. Admin. Code R 408.30515
Ground snow loads in Michigan by county
Michigan’s code sets the ground snow load per county, from 20 to 90 psf (0.96–4.31 kN/m²) county-wide, with higher or lower values for named cities, villages and townships. Scope: Michigan Residential Code (amendment to IRC Table R301.2).
Counties
| County | Ground snow load pg | kN/m² | Local exceptions |
|---|---|---|---|
| Alcona County | 50 psf | 2.39 | — |
| Alger County | 70 psf | 3.35 | — |
| Allegan County | 50 psf | 2.39 | 35 psf (18) |
| Alpena County | 50 psf | 2.39 | — |
| Antrim County | 60 psf | 2.87 | 70 psf (5) |
| Arenac County | 40 psf | 1.92 | — |
| Baraga County | 70 psf | 3.35 | — |
| Barry County | 35 psf | 1.68 | 30 psf (5) |
| Bay County | 35 psf | 1.68 | 40 psf (6) |
| Benzie County | 60 psf | 2.87 | — |
| Berrien County | 50 psf | 2.39 | — |
| Branch County | 25 psf | 1.20 | 20 psf (5) |
| Calhoun County | 25 psf | 1.20 | 30 psf (15) |
| Cass County | 30 psf | 1.44 | 50 psf (9) |
| Charlevoix County | 70 psf | 3.35 | — |
| Cheboygan County | 70 psf | 3.35 | 60 psf (12), 50 psf (1) |
| Chippewa County | 70 psf | 3.35 | 60 psf (3) |
| Clare County | 40 psf | 1.92 | 50 psf (2) |
| Clinton County | 30 psf | 1.44 | 35 psf (10) |
| Crawford County | 50 psf | 2.39 | — |
| Delta County | 60 psf | 2.87 | 70 psf (3) |
| Dickinson County | 60 psf | 2.87 | — |
| Eaton County | 30 psf | 1.44 | 35 psf (3) |
| Emmet County | 70 psf | 3.35 | — |
| Genesee County | 30 psf | 1.44 | 25 psf (12) |
| Gladwin County | 40 psf | 1.92 | — |
| Gogebic County | 60 psf | 2.87 | — |
| Grand Traverse County | 60 psf | 2.87 | — |
| Gratiot County | 35 psf | 1.68 | — |
| Hillsdale County | 20 psf | 0.96 | 25 psf (3) |
| Houghton County | 80 psf | 3.83 | 70 psf (6), 90 psf (6) |
| Huron County | 35 psf | 1.68 | — |
| Ingham County | 25 psf | 1.20 | 30 psf (9) |
| Ionia County | 35 psf | 1.68 | — |
| Iosco County | 40 psf | 1.92 | — |
| Iron County | 60 psf | 2.87 | — |
| Isabella County | 40 psf | 1.92 | 35 psf (6) |
| Jackson County | 25 psf | 1.20 | 20 psf (3) |
| Kalamazoo County | 30 psf | 1.44 | 35 psf (4) |
| Kalkaska County | 60 psf | 2.87 | — |
| Kent County | 35 psf | 1.68 | 40 psf (9) |
| Keweenaw County | 90 psf | 4.31 | 100 psf (3) |
| Lake County | 60 psf | 2.87 | 50 psf (6) |
| Lapeer County | 25 psf | 1.20 | 30 psf (11) |
| Leelanau County | 60 psf | 2.87 | — |
| Lenawee County | 20 psf | 0.96 | — |
| Livingston County | 25 psf | 1.20 | — |
| Luce County | 70 psf | 3.35 | — |
| Mackinac County | 60 psf | 2.87 | 70 psf (2) |
| Macomb County | 25 psf | 1.20 | — |
| Manistee County | 60 psf | 2.87 | — |
| Marquette County | 70 psf | 3.35 | 60 psf (3) |
| Mason County | 60 psf | 2.87 | — |
| Mecosta County | 40 psf | 1.92 | — |
| Menominee County | 60 psf | 2.87 | — |
| Midland County | 35 psf | 1.68 | 40 psf (7) |
| Missaukee County | 50 psf | 2.39 | 60 psf (3) |
| Monroe County | 20 psf | 0.96 | — |
| Montcalm County | 35 psf | 1.68 | 40 psf (8) |
| Montmorency County | 50 psf | 2.39 | — |
| Muskegon County | 40 psf | 1.92 | 50 psf (2), 60 psf (18) |
| Newaygo County | 40 psf | 1.92 | 50 psf (8) |
| Oakland County | 25 psf | 1.20 | — |
| Oceana County | 60 psf | 2.87 | 50 psf (10) |
| Ogemaw County | 40 psf | 1.92 | 50 psf (8) |
| Ontonagon County | 70 psf | 3.35 | 60 psf (3) |
| Osceola County | 50 psf | 2.39 | 40 psf (7) |
| Oscoda County | 50 psf | 2.39 | — |
| Otsego County | 50 psf | 2.39 | 60 psf (6) |
| Ottawa County | 50 psf | 2.39 | 35 psf (4), 40 psf (6) |
| Presque Isle County | 50 psf | 2.39 | 60 psf (1) |
| Roscommon County | 50 psf | 2.39 | 40 psf (1) |
| Saginaw County | 35 psf | 1.68 | 30 psf (14) |
| Sanilac County | 30 psf | 1.44 | 25 psf (3), 35 psf (4) |
| Schoolcraft County | 70 psf | 3.35 | — |
| Shiawassee County | 30 psf | 1.44 | 25 psf (2) |
| St. Clair County | 25 psf | 1.20 | — |
| St. Joseph County | 30 psf | 1.44 | 25 psf (10) |
| Tuscola County | 30 psf | 1.44 | 35 psf (14) |
| Van Buren County | 50 psf | 2.39 | 30 psf (1), 35 psf (12) |
| Washtenaw County | 25 psf | 1.20 | 20 psf (13) |
| Wayne County | 20 psf | 0.96 | 25 psf (1) |
| Wexford County | 60 psf | 2.87 | 50 psf (1) |
Other states
- Minnesota · 87 counties
Source: Michigan Administrative Code R 408.30515, Table R301.2(5)P "Michigan Ground Snow Loads by Jurisdiction" (effective August 29, 2025) — State administrative code — public law, free to reuse. County names: US Census Bureau Gazetteer. Transcribed Oct 9, 2026; confirm with the local building official before design.