USDA hardiness zones for Idaho cities, towns and counties

Idaho have 9 planting zones according to the USDA’s latest data, ranging from zone 3b to 7b.

To find your USDA hardiness zone in Idaho, check the list for your county, city, or town given below. You can also use our planting zone search tool by entering your zip code or view the Idaho zone map given below.

Idaho Plating Zones by ZipCode

Idaho Planting Zones Map

USDA hardiness zones for Idaho counties

Idaho Counties	USDA Hardiness Zones (2024)
Ada County	Zone 6b, 7a and 7b
Adams County	Zone 5a, 5b, 6a, 6b, 7a, 7b and 8a
Bannock County	Zone 5b, 6a, 6b and 7a
Bear Lake County	Zone 4b, 5a, 5b and 6a
Benewah County	Zone 6a, 6b and 7a
Bingham County	Zone 4b, 5a, 5b, 6a and 6b
Blaine County	Zone 4b, 5a, 5b, 6a and 6b
Boise County	Zone 4b, 5a, 5b, 6a, 6b and 7a
Bonner County	Zone 5a, 5b, 6a, 6b and 7a
Bonneville County	Zone 4b, 5a, 5b, 6a and 6b
Boundary County	Zone 5a, 5b, 6a and 6b
Butte County	Zone 4b, 5a, 5b, 6a and 6b
Camas County	Zone 4b, 5a, 5b, 6a, 6b and 7a
Canyon County	Zone 7a and 7b
Caribou County	Zone 4b, 5a, 5b, 6a and 6b
Clark County	Zone 3b, 4a, 4b, 5a, 5b and 6a
Clearwater County	Zone 5b, 6a, 6b, 7a and 7b
Custer County	Zone 4a, 4b, 5a, 5b, 6a and 6b
Elmore County	Zone 4b, 5a, 5b, 6a, 6b, 7a and 7b
Franklin County	Zone 5b, 6a and 6b
Fremont County	Zone 3b, 4a, 4b, 5a and 5b
Gem County	Zone 5b, 6a, 6b, 7a and 7b
Gooding County	Zone 6a, 6b, 7a and 7b
Idaho County	Zone 4b, 5a, 5b, 6a, 6b, 7a, 7b and 8a
Jefferson County	Zone 4b, 5a, 5b and 6a
Jerome County	Zone 6a, 6b and 7a
Kootenai County	Zone 6a, 6b and 7a
Latah County	Zone 6a, 6b, 7a and 7b
Lemhi County	Zone 4b, 5a, 5b, 6a and 6b
Lewis County	Zone 6a, 6b, 7a, 7b and 8a
Lincoln County	Zone 5b, 6a, 6b and 7a
Madison County	Zone 5a, 5b and 6a
Minidoka County	Zone 5b, 6a and 6b
Nez Perce County	Zone 6b, 7a, 7b and 8a
Oneida County	Zone 6a, 6b and 7a
Owyhee County	Zone 5b, 6a, 6b, 7a and 7b
Payette County	Zone 6b and 7a
Power County	Zone 5b, 6a, 6b and 7a
Shoshone County	Zone 5b, 6a, 6b and 7a
Teton County	Zone 4b, 5a, 5b and 6a
Twin Falls County	Zone 5a, 5b, 6a, 6b and 7a
Valley County	Zone 4b, 5a, 5b, 6a, 6b and 7a
Washington County	Zone 5b, 6a, 6b, 7a and 7b

USDA hardiness zones for Idaho cities and towns

Idaho City/Town	2024 USDA Hardiness Zone(s)
Aberdeen	Zone 5b
Acequia	Zone 6a
Albion	Zone 6b
American Falls	Zone 6a
Ammon	Zone 5b
Arbon Valley	Zone 6a and 6b
Arco	Zone 5a and 5b
Arimo	Zone 5b
Ashton	Zone 5a
Athol	Zone 6a and 6b
Atomic City	Zone 5a
Bancroft	Zone 5a
Banks	Zone 6b and 7a
Basalt	Zone 5b
Bellevue	Zone 6a and 6b
Bennington	Zone 4b and 5a
Blackfoot	Zone 5b
Blanchard	Zone 6a and 6b
Bliss	Zone 7a
Bloomington	Zone 5a
Boise	Zone 6b, 7a and 7b
Bonners Ferry	Zone 6b
Bovill	Zone 6b
Buhl	Zone 7a
Burley	Zone 6b
Butte City	Zone 5a
Caldwell	Zone 7a
Cambridge	Zone 6a
Carey	Zone 5b
Cascade	Zone 5a and 5b
Castleford	Zone 6b
Challis	Zone 5b
Chubbuck	Zone 6a
Clark Fork	Zone 6a and 6b
Clayton	Zone 5a and 5b
Clifton	Zone 6a
Coeur d’Alene	Zone 6b and 7a
Conkling Park	Zone 6b
Cottonwood	Zone 6b
Council	Zone 6a
Craigmont	Zone 6a
Crouch	Zone 6b
Culdesac	Zone 7a and 7b
Dalton Gardens	Zone 6b
Dayton	Zone 6a
De Smet	Zone 6b
Deary	Zone 6b
Declo	Zone 6a and 6b
Dietrich	Zone 6a
Donnelly	Zone 5a
Dover	Zone 6a and 6b
Downey	Zone 5b
Driggs	Zone 4b and 5a
Drummond	Zone 5a
Dubois	Zone 5a and 5b
Eagle	Zone 7a
East Hope	Zone 6b
Eden	Zone 6b
Elk City	Zone 5a and 5b
Elk River	Zone 6a and 6b
Emmett	Zone 7a
Fairfield	Zone 5a
Ferdinand	Zone 6a
Fernan Lake Village	Zone 7a
Filer	Zone 7a
Firth	Zone 5b
Fort Hall	Zone 5b and 6a
Franklin	Zone 6a
Garden City	Zone 7a
Garden Valley	Zone 6b
Genesee	Zone 7a
Georgetown	Zone 5a
Glenns Ferry	Zone 7a
Gooding	Zone 6b
Grace	Zone 5a and 5b
Grand View	Zone 7a
Grangeville	Zone 6b
Greenleaf	Zone 7a
Groveland	Zone 5b
Hagerman	Zone 7a
Hailey	Zone 6a
Hamer	Zone 4b and 5a
Hansen	Zone 6b
Harrison	Zone 6b and 7a
Hauser	Zone 6b and 7a
Hayden	Zone 6b
Hayden Lake	Zone 6b
Hazelton	Zone 6b
Heyburn	Zone 6a and 6b
Hidden Spring	Zone 7a
Hollister	Zone 6b
Homedale	Zone 7a
Hope	Zone 6b
Horseshoe Bend	Zone 7a
Huetter	Zone 6b and 7a
Idaho City	Zone 6a
Idaho Falls	Zone 5b
Inkom	Zone 6a
Iona	Zone 5b
Irwin	Zone 5a and 5b
Island Park	Zone 3b, 4a and 4b
Jerome	Zone 6b
Juliaetta	Zone 7b
Kamiah	Zone 7a and 7b
Kellogg	Zone 6b
Kendrick	Zone 7a and 7b
Ketchum	Zone 5b and 6a
Kooskia	Zone 7a and 7b
Kootenai	Zone 6b
Kuna	Zone 7a
Lapwai	Zone 7b
Lava Hot Springs	Zone 5b
Leadore	Zone 5a
Lewiston	Zone 7b
Lewisville	Zone 5a and 5b
Lincoln	Zone 5b
Lost River	Zone 5a, 5b and 6a
Lowman	Zone 5b and 6a
Mackay	Zone 5b
Malad City	Zone 6a
Malta	Zone 6a
Marsing	Zone 7a
McCall	Zone 5a and 5b
McCammon	Zone 5b
Melba	Zone 7a and 7b
Menan	Zone 5a and 5b
Meridian	Zone 7a
Middleton	Zone 7a
Midvale	Zone 6a
Minidoka	Zone 6a
Montpelier	Zone 4b and 5a
Moore	Zone 4b
Moreland	Zone 5b
Moscow	Zone 6b
Mountain Home	Zone 6b and 7a
Mountain Home AFB	Zone 7a
Moyie Springs	Zone 6b
Mud Lake	Zone 4b
Mullan	Zone 6a and 6b
Murphy	Zone 7a
Murtaugh	Zone 6b
Nampa	Zone 7a
New Meadows	Zone 5b
New Plymouth	Zone 7a
Nezperce	Zone 6b
Notus	Zone 7a
Oakley	Zone 6b
Oldtown	Zone 6a and 6b
Onaway	Zone 6b
Orofino	Zone 7b
Osburn	Zone 6b
Oxford	Zone 5b
Paris	Zone 5a
Parker	Zone 5a
Parkline	Zone 6b
Parma	Zone 7a
Paul	Zone 6a
Payette	Zone 7a
Peck	Zone 7b
Pierce	Zone 6a
Pinehurst	Zone 6b
Placerville	Zone 6a and 6b
Plummer	Zone 6b
Pocatello	Zone 6a and 6b
Ponderay	Zone 6b
Post Falls	Zone 6b and 7a
Potlatch	Zone 6b
Preston	Zone 6a
Priest River	Zone 6a and 6b
Princeton	Zone 6b
Rathdrum	Zone 6b
Reubens	Zone 6b
Rexburg	Zone 5a
Richfield	Zone 6a
Rigby	Zone 5b
Riggins	Zone 7b
Ririe	Zone 5b
Riverside	Zone 5b
Roberts	Zone 5a
Robie Creek	Zone 6b and 7a
Rockford	Zone 5b
Rockford Bay	Zone 6b
Rockland	Zone 6a
Salmon	Zone 5b
Sandpoint	Zone 6b
Shelley	Zone 5b
Shoshone	Zone 6b
Smelterville	Zone 6b
Smiths Ferry	Zone 5b and 6a
Soda Springs	Zone 5a and 5b
Spencer	Zone 5a and 5b
Spirit Lake	Zone 6a and 6b
St. Anthony	Zone 5a
St. Charles	Zone 5a
St. Maries	Zone 6b and 7a
Stanley	Zone 4a
Star	Zone 7a
State Line	Zone 6b and 7a
Stites	Zone 7b
Sugar City	Zone 5a
Sun Valley	Zone 5b and 6a
Swan Valley	Zone 5a and 5b
Sweetwater	Zone 7b
Tensed	Zone 6b
Teton	Zone 5a
Tetonia	Zone 4b and 5a
Troy	Zone 6b
Twin Falls	Zone 6b and 7a
Tyhee	Zone 6a
Ucon	Zone 5b
Victor	Zone 4b and 5a
Wallace	Zone 6b
Wardner	Zone 6b
Warm River	Zone 5a
Weippe	Zone 6b
Weiser	Zone 6b and 7a
Wendell	Zone 6b
Weston	Zone 6a
White Bird	Zone 7b
Wilder	Zone 7a
Winchester	Zone 6b
Worley	Zone 6b