USDA hardiness zones for Iowa cities, towns and counties

There are 4 planting zones in Iowa, from zone 4b to zone 6a as per the USDA’s latest official data released in 2023.

Find your USDA Hardiness zone in Iowa by checking the list of Iowa cities, towns, and counties planting zones provided below. You can also use the Planting Zones by Zipcode search tool and the interactive map available below.

Iowa Plating Zones by ZipCode

Planting Zones Iowa Map

USDA hardiness zones for Iowa counties

Iowa counties	Hardiness Zones
Adair County	Zone 5a and 5b
Adams County	Zone 5b
Allamakee County	Zone 5a
Appanoose County	Zone 5b
Audubon County	Zone 5a and 5b
Benton County	Zone 5a
Black Hawk County	Zone 5a
Boone County	Zone 5a and 5b
Bremer County	Zone 5a
Buchanan County	Zone 4b and 5a
Buena Vista County	Zone 5a
Butler County	Zone 5a
Calhoun County	Zone 5a
Carroll County	Zone 5a
Cass County	Zone 5a and 5b
Cedar County	Zone 5a and 5b
Cerro Gordo County	Zone 5a
Cherokee County	Zone 5a
Chickasaw County	Zone 4b and 5a
Clay County	Zone 5a
Clayton County	Zone 4b and 5a
Clinton County	Zone 5a and 5b
Crawford County	Zone 5a and 5b
Dallas County	Zone 5a and 5b
Davis County	Zone 5b and 6a
Decatur County	Zone 5b and 6a
Delaware County	Zone 4b and 5a
Des Moines County	Zone 5b and 6a
Dickinson County	Zone 5a
Dubuque County	Zone 5a
Emmet County	Zone 5a
Fayette County	Zone 4b and 5a
Floyd County	Zone 5a
Franklin County	Zone 5a
Fremont County	Zone 5b and 6a
Greene County	Zone 5a and 5b
Grundy County	Zone 5a
Guthrie County	Zone 5a and 5b
Hamilton County	Zone 5a
Hancock County	Zone 5a
Hardin County	Zone 5a
Harrison County	Zone 5a and 5b
Henry County	Zone 5b and 6a
Howard County	Zone 4b and 5a
Humboldt County	Zone 5a
Ida County	Zone 5a
Iowa County	Zone 5a and 5b
Jackson County	Zone 5a and 5b
Jasper County	Zone 5a and 5b
Jefferson County	Zone 5b and 6a
Johnson County	Zone 5a and 5b
Jones County	Zone 5a
Keokuk County	Zone 5b
Kossuth County	Zone 5a
Lee County	Zone 6a
Linn County	Zone 5a and 5b
Louisa County	Zone 5b and 6a
Lucas County	Zone 5b
Lyon County	Zone 4b and 5a
Madison County	Zone 5b
Mahaska County	Zone 5b
Marion County	Zone 5b and 6a
Marshall County	Zone 5a and 5b
Mills County	Zone 5b and 6a
Mitchell County	Zone 4b and 5a
Monona County	Zone 5a and 5b
Monroe County	Zone 5b
Montgomery County	Zone 5a and 5b
Muscatine County	Zone 5b
Osceola County	Zone 4b and 5a
Page County	Zone 5b and 6a
Palo Alto County	Zone 5a
Plymouth County	Zone 5a
Pocahontas County	Zone 5a
Polk County	Zone 5a and 5b
Pottawattamie County	Zone 5a, 5b and 6a
Poweshiek County	Zone 5a and 5b
Ringgold County	Zone 5b
Sac County	Zone 5a
Scott County	Zone 5a and 5b
Shelby County	Zone 5a and 5b
Sioux County	Zone 5a
Story County	Zone 5a and 5b
Tama County	Zone 5a
Taylor County	Zone 5b
Union County	Zone 5b
Van Buren County	Zone 5b and 6a
Wapello County	Zone 5b and 6a
Warren County	Zone 5b
Washington County	Zone 5b
Wayne County	Zone 5b
Webster County	Zone 5a
Winnebago County	Zone 5a
Winneshiek County	Zone 4b and 5a
Woodbury County	Zone 5a
Worth County	Zone 4b and 5a
Wright County	Zone 5a

USDA hardiness zones for Iowa cities and towns

Iowa Cities/Towns	2024 Hardiness Zones
Ackley	Zone 5a
Ackworth	Zone 5b
Adair	Zone 5b
Adel	Zone 5a and 5b
Afton	Zone 5b
Agency	Zone 5b
Ainsworth	Zone 5b
Akron	Zone 5a
Albert City	Zone 5a
Albia	Zone 5b
Albion	Zone 5a
Alburnett	Zone 5a
Alden	Zone 5a
Alexander	Zone 5a
Algona	Zone 5a
Alleman	Zone 5b
Allerton	Zone 5b
Allison	Zone 5a
Alta	Zone 5a
Alta Vista	Zone 5a
Alton	Zone 5a
Altoona	Zone 5b
Alvord	Zone 5a
Amana	Zone 5b
Ames	Zone 5a and 5b
Anamosa	Zone 5a
Anderson	Zone 5b
Andover	Zone 5a
Andrew	Zone 5a
Anita	Zone 5b
Ankeny	Zone 5b
Anthon	Zone 5a
Aplington	Zone 5a
Arcadia	Zone 5a
Archer	Zone 5a
Aredale	Zone 5a
Arion	Zone 5a and 5b
Arispe	Zone 5b
Arlington	Zone 4b and 5a
Armstrong	Zone 5a
Arnolds Park	Zone 5a
Arthur	Zone 5a
Asbury	Zone 5a
Ashton	Zone 5a
Aspinwall	Zone 5a
Atalissa	Zone 5b
Athelstan	Zone 5b
Atkins	Zone 5a
Atlantic	Zone 5a and 5b
Auburn	Zone 5a
Audubon	Zone 5a
Aurelia	Zone 5a
Aurora	Zone 5a
Avoca	Zone 5b
Ayrshire	Zone 5a
Badger	Zone 5a
Bagley	Zone 5a
Baldwin	Zone 5a
Balltown	Zone 5a
Bancroft	Zone 5a
Bankston	Zone 5a
Barnes City	Zone 5b
Barnum	Zone 5a
Bartlett	Zone 5b
Bassett	Zone 5a
Batavia	Zone 5b
Battle Creek	Zone 5a
Baxter	Zone 5b
Bayard	Zone 5a
Beacon	Zone 5b
Beaconsfield	Zone 5b
Beaman	Zone 5a
Beaver	Zone 5a
Beaverdale	Zone 6a
Bedford	Zone 5b
Belle Plaine	Zone 5a
Bellevue	Zone 5a
Belmond	Zone 5a
Bennett	Zone 5a and 5b
Bentley	Zone 5b
Benton	Zone 5b
Berkley	Zone 5a
Bernard	Zone 5a
Bertram	Zone 5a and 5b
Bettendorf	Zone 5b
Bevington	Zone 5b
Birmingham	Zone 5b
Blairsburg	Zone 5a
Blairstown	Zone 5a
Blakesburg	Zone 5b
Blanchard	Zone 5b
Blencoe	Zone 5a
Blockton	Zone 5b
Bloomfield	Zone 5b and 6a
Blue Grass	Zone 5b
Bode	Zone 5a
Bolan	Zone 5a
Bonaparte	Zone 6a
Bondurant	Zone 5b
Boone	Zone 5a and 5b
Bouton	Zone 5a
Boxholm	Zone 5a
Boyden	Zone 5a
Braddyville	Zone 5b
Bradford	Zone 5a
Bradgate	Zone 5a
Brandon	Zone 5a
Brayton	Zone 5a
Breda	Zone 5a
Bridgewater	Zone 5b
Brighton	Zone 5b
Bristow	Zone 5a
Britt	Zone 5a
Bronson	Zone 5a
Brooklyn	Zone 5a
Brunsville	Zone 5a
Buck Grove	Zone 5b
Buckeye	Zone 5a
Buffalo	Zone 5b
Buffalo Center	Zone 5a
Burchinal	Zone 5a
Burlington	Zone 6a
Burr Oak	Zone 4b
Burt	Zone 5a
Bussey	Zone 5b
Calamus	Zone 5b
California Junction	Zone 5b
Callender	Zone 5a
Calmar	Zone 5a
Calumet	Zone 5a
Camanche	Zone 5b
Cambridge	Zone 5b
Cantril	Zone 5b and 6a
Carbon	Zone 5b
Carlisle	Zone 5b
Carpenter	Zone 5a
Carroll	Zone 5a
Carson	Zone 5b
Carter Lake	Zone 5b and 6a
Cascade	Zone 5a
Casey	Zone 5b
Castalia	Zone 5a
Castana	Zone 5a and 5b
Cedar Falls	Zone 5a
Cedar Rapids	Zone 5a and 5b
Center Junction	Zone 5a
Center Point	Zone 5a
Centerville	Zone 5b
Central City	Zone 5a
Centralia	Zone 5a
Chapin	Zone 5a
Chariton	Zone 5b
Charles City	Zone 5a
Charlotte	Zone 5a
Charter Oak	Zone 5a
Chatsworth	Zone 5a
Chelsea	Zone 5a
Cherokee	Zone 5a
Chester	Zone 4b
Chillicothe	Zone 5b
Churdan	Zone 5a
Cincinnati	Zone 5b
Clare	Zone 5a
Clarence	Zone 5a
Clarinda	Zone 5b
Clarion	Zone 5a
Clarksville	Zone 5a
Clayton	Zone 5a
Clear Lake	Zone 5a
Clearfield	Zone 5b
Cleghorn	Zone 5a
Clemons	Zone 5a
Clermont	Zone 5a
Climbing Hill	Zone 5a
Clinton	Zone 5a and 5b
Clio	Zone 5b
Clive	Zone 5b
Clutier	Zone 5a
Coalville	Zone 5a
Coburg	Zone 5b
Coggon	Zone 5a
Coin	Zone 5b
Colesburg	Zone 5a
Colfax	Zone 5b
College Springs	Zone 5b
Collins	Zone 5b
Colo	Zone 5b
Columbus City	Zone 5b
Columbus Junction	Zone 5b
Colwell	Zone 5a
Conesville	Zone 5b
Conrad	Zone 5a
Conroy	Zone 5a
Conway	Zone 5b
Coon Rapids	Zone 5a
Coppock	Zone 5b
Coralville	Zone 5b
Corley	Zone 5b
Corning	Zone 5b
Correctionville	Zone 5a
Corwith	Zone 5a
Corydon	Zone 5b
Cotter	Zone 5b
Coulter	Zone 5a
Council Bluffs	Zone 5b and 6a
Craig	Zone 5a
Crawfordsville	Zone 5b
Crescent	Zone 5b and 6a
Cresco	Zone 4b
Creston	Zone 5b
Cromwell	Zone 5b
Crystal Lake	Zone 5a
Cumberland	Zone 5a and 5b
Cumming	Zone 5b
Curlew	Zone 5a
Cushing	Zone 5a
Cylinder	Zone 5a
Dakota City	Zone 5a
Dallas Center	Zone 5a and 5b
Dana	Zone 5a
Danbury	Zone 5a
Danville	Zone 6a
Davenport	Zone 5b
Davis City	Zone 5b
Dawson	Zone 5a
Dayton	Zone 5a
De Soto	Zone 5b
De Witt	Zone 5b
Decatur City	Zone 5b
Decorah	Zone 4b and 5a
Dedham	Zone 5a
Deep River	Zone 5b
Defiance	Zone 5a
Delaware	Zone 4b and 5a
Delhi	Zone 5a
Delmar	Zone 5a
Deloit	Zone 5a
Delphos	Zone 5b
Delta	Zone 5b
Denison	Zone 5a and 5b
Denmark	Zone 6a
Denver	Zone 5a
Derby	Zone 5b
Des Moines	Zone 5b
Dexter	Zone 5b
Diagonal	Zone 5b
Diamondhead Lake	Zone 5a and 5b
Dickens	Zone 5a
Dike	Zone 5a
Dixon	Zone 5b
Dolliver	Zone 5a
Donahue	Zone 5b
Donnellson	Zone 6a
Doon	Zone 5a
Douds	Zone 5b and 6a
Dougherty	Zone 5a
Dow City	Zone 5a
Dows	Zone 5a
Drakesville	Zone 5b
Dubuque	Zone 5a
Dumont	Zone 5a
Duncan	Zone 5a
Duncombe	Zone 5a
Dundee	Zone 4b and 5a
Dunkerton	Zone 5a
Dunlap	Zone 5b
Durango	Zone 5a
Durant	Zone 5b
Dyersville	Zone 5a
Dysart	Zone 5a
Eagle Grove	Zone 5a
Earlham	Zone 5b
Earling	Zone 5b
Earlville	Zone 5a
Early	Zone 5a
East Amana	Zone 5a and 5b
East Peru	Zone 5b
Eddyville	Zone 5b
Edgewood	Zone 4b
Elberon	Zone 5a
Eldon	Zone 5b and 6a
Eldora	Zone 5a
Eldridge	Zone 5b
Elgin	Zone 5a
Elk Horn	Zone 5a
Elk Run Heights	Zone 5a
Elkader	Zone 4b
Elkhart	Zone 5b
Elkport	Zone 5a
Elliott	Zone 5b
Ellston	Zone 5b
Ellsworth	Zone 5a
Elma	Zone 5a
Ely	Zone 5a and 5b
Emerson	Zone 5b
Emmetsburg	Zone 5a
Epworth	Zone 5a
Essex	Zone 5b
Estherville	Zone 5a
Evansdale	Zone 5a
Everly	Zone 5a
Exira	Zone 5a
Exline	Zone 5b
Fairbank	Zone 5a
Fairfax	Zone 5a and 5b
Fairfield	Zone 5b
Farley	Zone 5a
Farmersburg	Zone 5a
Farmington	Zone 6a
Farnhamville	Zone 5a
Farragut	Zone 5b
Fayette	Zone 4b and 5a
Fenton	Zone 5a
Ferguson	Zone 5a
Fertile	Zone 5a
Floris	Zone 5b
Floyd	Zone 5a
Fonda	Zone 5a
Fontanelle	Zone 5b
Forest City	Zone 5a
Fort Atkinson	Zone 5a
Fort Dodge	Zone 5a
Fort Madison	Zone 6a
Fostoria	Zone 5a
Franklin	Zone 6a
Fraser	Zone 5a
Fredericksburg	Zone 5a
Frederika	Zone 5a
Fredonia	Zone 5b
Fremont	Zone 5b
Fruitland	Zone 5b
Frytown	Zone 5b
Galt	Zone 5a
Galva	Zone 5a
Garden City	Zone 5a
Garden Grove	Zone 5b
Garnavillo	Zone 5a
Garner	Zone 5a
Garrison	Zone 5a
Garwin	Zone 5a
Geneva	Zone 5a
George	Zone 5a
Gibson	Zone 5b
Gilbert	Zone 5b
Gilbertville	Zone 5a
Gillett Grove	Zone 5a
Gilman	Zone 5a
Gilmore City	Zone 5a
Gladbrook	Zone 5a
Glenwood	Zone 5b and 6a
Glidden	Zone 5a
Goldfield	Zone 5a
Goodell	Zone 5a
Goose Lake	Zone 5a
Gowrie	Zone 5a
Graettinger	Zone 5a
Graf	Zone 5a
Grafton	Zone 5a
Grand Junction	Zone 5a and 5b
Grand Mound	Zone 5b
Grand River	Zone 5b
Grandview	Zone 5b
Granger	Zone 5b
Grant	Zone 5b
Granville	Zone 5a
Gravity	Zone 5b
Gray	Zone 5a
Greeley	Zone 4b
Green Mountain	Zone 5a
Greene	Zone 5a
Greenfield	Zone 5b
Greenville	Zone 5a
Grimes	Zone 5b
Grinnell	Zone 5b
Griswold	Zone 5b
Grundy Center	Zone 5a
Gruver	Zone 5a
Guernsey	Zone 5a and 5b
Guthrie Center	Zone 5a
Guttenberg	Zone 5a
Halbur	Zone 5a
Hamburg	Zone 5b
Hamilton	Zone 5b
Hampton	Zone 5a
Hancock	Zone 5b
Hanlontown	Zone 5a
Hansell	Zone 5a
Harcourt	Zone 5a
Hardy	Zone 5a
Harlan	Zone 5b
Harper	Zone 5b
Harpers Ferry	Zone 5a
Harris	Zone 5a
Hartford	Zone 5b
Hartley	Zone 5a
Hartwick	Zone 5a
Harvey	Zone 5b
Hastings	Zone 5b
Havelock	Zone 5a
Haverhill	Zone 5a
Hawarden	Zone 5a
Hawkeye	Zone 5a
Hayesville	Zone 5b
Hayfield	Zone 5a
Hazleton	Zone 5a
Hedrick	Zone 5b
Henderson	Zone 5b
Hepburn	Zone 5b
Hiawatha	Zone 5a and 5b
High Amana	Zone 5a and 5b
Hills	Zone 5b
Hillsboro	Zone 6a
Hinton	Zone 5a
Holiday Lake	Zone 5a
Holland	Zone 5a
Holstein	Zone 5a
Holy Cross	Zone 5a
Homestead	Zone 5a and 5b
Hopkinton	Zone 5a
Hornick	Zone 5a
Hospers	Zone 5a
Houghton	Zone 6a
Hubbard	Zone 5a
Hudson	Zone 5a
Hull	Zone 5a
Humboldt	Zone 5a
Humeston	Zone 5b
Hutchins	Zone 5a
Huxley	Zone 5b
Ida Grove	Zone 5a
Imogene	Zone 5b
Independence	Zone 5a
Indianola	Zone 5b
Inwood	Zone 5a
Ionia	Zone 5a
Iowa City	Zone 5b
Iowa Falls	Zone 5a
Ireton	Zone 5a
Irvington	Zone 5a
Irwin	Zone 5a
Jackson Junction	Zone 5a
Jacksonville	Zone 5a and 5b
Jamaica	Zone 5a
Janesville	Zone 5a
Jefferson	Zone 5b
Jesup	Zone 5a
Jewell Junction	Zone 5a
Johnston	Zone 5b
Joice	Zone 5a
Jolley	Zone 5a
Kalona	Zone 5b
Kamrar	Zone 5a
Kanawha	Zone 5a
Kellerton	Zone 5b
Kelley	Zone 5b
Kellogg	Zone 5b
Kensett	Zone 5a
Kent	Zone 5b
Keokuk	Zone 6a
Keomah Village	Zone 5b
Keosauqua	Zone 5b
Keota	Zone 5b
Keswick	Zone 5b
Keystone	Zone 5a
Kimballton	Zone 5a and 5b
Kingsley	Zone 5a
Kinross	Zone 5b
Kirkman	Zone 5a and 5b
Kirkville	Zone 5b
Kiron	Zone 5a
Klemme	Zone 5a
Knierim	Zone 5a
Knoxville	Zone 5b
La Motte	Zone 5a
La Porte City	Zone 5a
Lacona	Zone 5b
Ladora	Zone 5a and 5b
Lake City	Zone 5a
Lake Mills	Zone 5a
Lake Panorama	Zone 5a
Lake Park	Zone 5a
Lake View	Zone 5a
Lakeside	Zone 5a
Lakota	Zone 5a
Lambs Grove	Zone 5b
Lamoni	Zone 5b
Lamont	Zone 5a
Lanesboro	Zone 5a
Lansing	Zone 5a
Larchwood	Zone 5a
Larrabee	Zone 5a
Latimer	Zone 5a
Laurel	Zone 5a and 5b
Laurens	Zone 5a
Lawler	Zone 5a
Lawton	Zone 5a
Le Claire	Zone 5b
Le Grand	Zone 5a
Le Mars	Zone 5a
Leando	Zone 5b and 6a
Ledyard	Zone 5a
Lehigh	Zone 5a
Leighton	Zone 5b
Leland	Zone 5a
Lenox	Zone 5b
Leon	Zone 5b
Lester	Zone 5a
Letts	Zone 5b
Lewis	Zone 5a and 5b
Libertyville	Zone 5b
Lidderdale	Zone 5a
Lime Springs	Zone 4b
Lincoln	Zone 5a
Linden	Zone 5a
Lineville	Zone 5b
Linn Grove	Zone 5a
Lisbon	Zone 5a
Liscomb	Zone 5a
Little Cedar	Zone 5a
Little Rock	Zone 5a
Little Sioux	Zone 5a
Livermore	Zone 5a
Lockridge	Zone 5b
Logan	Zone 5a and 5b
Lohrville	Zone 5a
Lone Rock	Zone 5a
Lone Tree	Zone 5b
Long Grove	Zone 5b
Lorimor	Zone 5b
Lost Nation	Zone 5a
Loveland	Zone 5b
Lovilia	Zone 5b
Low Moor	Zone 5b
Lowden	Zone 5a
Lu Verne	Zone 5a
Luana	Zone 5a
Lucas	Zone 5b
Luther	Zone 5a and 5b
Luxemburg	Zone 5a
Luzerne	Zone 5a
Lynnville	Zone 5b
Lytton	Zone 5a
Macedonia	Zone 5b
Macksburg	Zone 5b
Madrid	Zone 5a and 5b
Magnolia	Zone 5b
Maharishi Vedic City	Zone 5b
Malcom	Zone 5a
Mallard	Zone 5a
Maloy	Zone 5b
Malvern	Zone 5b
Manchester	Zone 5a
Manilla	Zone 5a
Manly	Zone 5a
Manning	Zone 5a
Manson	Zone 5a
Mapleton	Zone 5a
Maquoketa	Zone 5a
Marathon	Zone 5a
Marble Rock	Zone 5a
Marcus	Zone 5a
Marengo	Zone 5a and 5b
Marion	Zone 5a and 5b
Marne	Zone 5b
Marquette	Zone 5a
Marshalltown	Zone 5a
Martelle	Zone 5a
Martensdale	Zone 5b
Martinsburg	Zone 5b
Marysville	Zone 5b
Mason City	Zone 5a
Masonville	Zone 5a
Massena	Zone 5b
Matlock	Zone 5a
Maurice	Zone 5a
Maxwell	Zone 5b
Maynard	Zone 5a
Maysville	Zone 5b
McCallsburg	Zone 5a
McCausland	Zone 5b
McClelland	Zone 5b and 6a
McGregor	Zone 5a
McIntire	Zone 4b and 5a
Mechanicsville	Zone 5a
Mediapolis	Zone 5b
Melbourne	Zone 5a and 5b
Melcher-Dallas	Zone 5b
Melrose	Zone 5b
Melvin	Zone 5a
Menlo	Zone 5b
Meriden	Zone 5a
Merrill	Zone 5a
Meservey	Zone 5a
Meyer	Zone 5a
Middle Amana	Zone 5b
Middletown	Zone 6a
Miles	Zone 5a
Milford	Zone 5a
Miller	Zone 5a
Millersburg	Zone 5b
Millerton	Zone 5b
Milo	Zone 5b
Milton	Zone 5b and 6a
Minburn	Zone 5a
Minden	Zone 5b
Mineola	Zone 5b and 6a
Mingo	Zone 5b
Missouri Valley	Zone 5b
Mitchell	Zone 5a
Mitchellville	Zone 5b
Modale	Zone 5b
Mona	Zone 5a
Mondamin	Zone 5b
Monmouth	Zone 5a
Monona	Zone 5a
Monroe	Zone 5b
Montezuma	Zone 5b
Monticello	Zone 5a
Montour	Zone 5a
Montrose	Zone 6a
Moorhead	Zone 5b
Moorland	Zone 5a
Moravia	Zone 5b
Morley	Zone 5a
Morning Sun	Zone 5b
Morrison	Zone 5a
Moulton	Zone 5b
Mount Auburn	Zone 5a
Mount Ayr	Zone 5b
Mount Pleasant	Zone 5b
Mount Sterling	Zone 6a
Mount Union	Zone 5b
Mount Vernon	Zone 5a
Moville	Zone 5a
Murray	Zone 5b
Muscatine	Zone 5b
Mystic	Zone 5b
Nashua	Zone 5a
Nemaha	Zone 5a
Neola	Zone 5b
Nevada	Zone 5a and 5b
New Albin	Zone 5a
New Hampton	Zone 5a
New Hartford	Zone 5a
New Haven	Zone 5a
New Liberty	Zone 5b
New London	Zone 5b
New Market	Zone 5b
New Providence	Zone 5a
New Sharon	Zone 5b
New Vienna	Zone 5a
New Virginia	Zone 5b
Newell	Zone 5a
Newhall	Zone 5a
Newton	Zone 5b
Nichols	Zone 5b
Nodaway	Zone 5b
Nora Springs	Zone 5a
North Buena Vista	Zone 5a
North English	Zone 5b
North Liberty	Zone 5b
North Washington	Zone 5a
Northboro	Zone 5b
Northwood	Zone 4b and 5a
Norwalk	Zone 5b
Norway	Zone 5a
Numa	Zone 5b
Oakland	Zone 5b
Oakland Acres	Zone 5b
Oakville	Zone 5b
Ocheyedan	Zone 5a
Odebolt	Zone 5a
Oelwein	Zone 5a
Ogden	Zone 5a
Okoboji	Zone 5a
Olds	Zone 5b
Olin	Zone 5a
Ollie	Zone 5b
Onawa	Zone 5a
Onslow	Zone 5a
Orange City	Zone 5a
Orchard	Zone 5a
Orient	Zone 5b
Orleans	Zone 5a
Osage	Zone 5a
Osceola	Zone 5b
Oskaloosa	Zone 5b
Ossian	Zone 5a
Osterdock	Zone 5a
Otho	Zone 5a
Oto	Zone 5a
Otranto	Zone 5a
Ottosen	Zone 5a
Ottumwa	Zone 5b and 6a
Owasa	Zone 5a
Oxford	Zone 5b
Oxford Junction	Zone 5a
Oyens	Zone 5a
Pacific Junction	Zone 5b
Packwood	Zone 5b
Palmer	Zone 5a
Palo	Zone 5a and 5b
Panama	Zone 5b
Panora	Zone 5a
Panorama Park	Zone 5b
Park View	Zone 5b
Parkersburg	Zone 5a
Parnell	Zone 5b
Paton	Zone 5a
Patterson	Zone 5b
Paullina	Zone 5a
Pella	Zone 5b and 6a
Peosta	Zone 5a
Percival	Zone 5b
Perry	Zone 5a
Persia	Zone 5b
Peterson	Zone 5a
Pierson	Zone 5a
Pilot Mound	Zone 5a
Pioneer	Zone 5a
Pisgah	Zone 5a and 5b
Plainfield	Zone 5a
Plano	Zone 5b
Pleasant Hill	Zone 5b
Pleasant Plain	Zone 5b
Pleasanton	Zone 5b
Pleasantville	Zone 5b
Plover	Zone 5a
Plymouth	Zone 5a
Pocahontas	Zone 5a
Polk City	Zone 5b
Pomeroy	Zone 5a
Popejoy	Zone 5a
Portland	Zone 5a
Portsmouth	Zone 5b
Postville	Zone 5a
Prairie City	Zone 5b
Prairieburg	Zone 5a
Prescott	Zone 5b
Preston	Zone 5a
Primghar	Zone 5a
Princeton	Zone 5b
Promise City	Zone 5b
Protivin	Zone 4b
Pulaski	Zone 5b
Quasqueton	Zone 5a
Quimby	Zone 5a
Radcliffe	Zone 5a
Rake	Zone 5a
Ralston	Zone 5a
Randalia	Zone 4b and 5a
Randall	Zone 5a
Randolph	Zone 5b
Rathbun	Zone 5b
Raymond	Zone 5a
Readlyn	Zone 5a
Reasnor	Zone 5b
Red Oak	Zone 5b
Redding	Zone 5b
Redfield	Zone 5a and 5b
Reinbeck	Zone 5a
Rembrandt	Zone 5a
Remsen	Zone 5a
Renwick	Zone 5a
Rhodes	Zone 5b
Riceville	Zone 5a
Richland	Zone 5b
Rickardsville	Zone 5a
Ricketts	Zone 5a
Ridgeway	Zone 4b
Rinard	Zone 5a
Ringsted	Zone 5a
Rippey	Zone 5a
River Sioux	Zone 5a
Riverdale	Zone 5b
Riverside	Zone 5b
Riverton	Zone 5b
Robins	Zone 5a
Rochester	Zone 5b
Rock Falls	Zone 5a
Rock Rapids	Zone 5a
Rock Valley	Zone 5a
Rockford	Zone 5a
Rockwell	Zone 5a
Rockwell City	Zone 5a
Rodman	Zone 5a
Rodney	Zone 5a
Roland	Zone 5a
Rolfe	Zone 5a
Rome	Zone 6a
Rose Hill	Zone 5b
Roseville	Zone 5a
Rossie	Zone 5a
Rowan	Zone 5a
Rowley	Zone 5a
Royal	Zone 5a
Rudd	Zone 5a
Runnells	Zone 5b
Russell	Zone 5b
Ruthven	Zone 5a
Rutland	Zone 5a
Ryan	Zone 5a
Sabula	Zone 5a and 5b
Sac City	Zone 5a
Sageville	Zone 5a
Salem	Zone 6a
Salix	Zone 5a
Sanborn	Zone 5a
Sandyville	Zone 5b
Saylorville	Zone 5b
Scarville	Zone 5a
Schaller	Zone 5a
Schleswig	Zone 5a
Scranton	Zone 5a
Searsboro	Zone 5b
Sergeant Bluff	Zone 5a
Sexton	Zone 5a
Seymour	Zone 5b
Shambaugh	Zone 5b
Shannon City	Zone 5b
Sharpsburg	Zone 5b
Sheffield	Zone 5a
Shelby	Zone 5b
Sheldahl	Zone 5b
Sheldon	Zone 4b and 5a
Shell Rock	Zone 5a
Shellsburg	Zone 5a
Shenandoah	Zone 5b
Sherrill	Zone 5a
Shueyville	Zone 5a
Sibley	Zone 4b and 5a
Sidney	Zone 5b and 6a
Sigourney	Zone 5b
Silver City	Zone 5b
Sioux Center	Zone 5a
Sioux City	Zone 5a
Sioux Rapids	Zone 5a
Slater	Zone 5a and 5b
Smithland	Zone 5a
Soldier	Zone 5a and 5b
Solon	Zone 5b
Somers	Zone 5a
South Amana	Zone 5a and 5b
South English	Zone 5b
Spencer	Zone 5a
Spillville	Zone 4b
Spirit Lake	Zone 5a
Spragueville	Zone 5a
Spring Hill	Zone 5b
Springbrook	Zone 5a
Springville	Zone 5a
St. Ansgar	Zone 5a
St. Anthony	Zone 5a
St. Benedict	Zone 5a
St. Charles	Zone 5b
St. Donatus	Zone 5a
St. Joseph	Zone 5a
St. Lucas	Zone 5a
St. Marys	Zone 5b
St. Olaf	Zone 5a
St. Paul	Zone 6a
Stacyville	Zone 5a
Stanhope	Zone 5a
Stanley	Zone 4b
Stanton	Zone 5b
Stanwood	Zone 5a
State Center	Zone 5a
Steamboat Rock	Zone 5a
Stockport	Zone 5b
Stockton	Zone 5b
Stone City	Zone 5a
Storm Lake	Zone 5a
Story City	Zone 5a and 5b
Stout	Zone 5a
Stratford	Zone 5a
Strawberry Point	Zone 4b
Struble	Zone 5a
Stuart	Zone 5b
Sully	Zone 5b
Sumner	Zone 5a
Sun Valley Lake	Zone 5b
Superior	Zone 5a
Sutherland	Zone 5a
Swaledale	Zone 5a
Swan	Zone 5b
Swea City	Zone 5a
Swisher	Zone 5a
Tabor	Zone 6a
Tama	Zone 5a
Templeton	Zone 5a
Tennant	Zone 5b
Terril	Zone 5a
Thayer	Zone 5b
Thompson	Zone 5a
Thor	Zone 5a
Thornburg	Zone 5b
Thornton	Zone 5a
Thurman	Zone 5b
Tiffin	Zone 5b
Tingley	Zone 5b
Tipton	Zone 5a
Titonka	Zone 5a
Toeterville	Zone 5a
Toledo	Zone 5a
Toronto	Zone 5a
Traer	Zone 5a
Treynor	Zone 5b
Tripoli	Zone 5a
Truesdale	Zone 5a
Truro	Zone 5b
Turin	Zone 5a
Twin Lakes	Zone 5a
Udell	Zone 5b
Underwood	Zone 5b
Union	Zone 5a
Unionville	Zone 5b
University Heights	Zone 5b
University Park	Zone 5b
Urbana	Zone 5a
Urbandale	Zone 5b
Ute	Zone 5a
Vail	Zone 5a
Valeria	Zone 5b
Van Horne	Zone 5a
Van Meter	Zone 5b
Van Wert	Zone 5b
Varina	Zone 5a
Ventura	Zone 5a
Victor	Zone 5a
Villisca	Zone 5b
Vincent	Zone 5a
Vining	Zone 5a
Vinton	Zone 5a
Volga	Zone 4b
Wadena	Zone 5a
Wahpeton	Zone 5a
Walcott	Zone 5b
Walford	Zone 5a
Walker	Zone 5a
Wall Lake	Zone 5a
Wallingford	Zone 5a
Walnut	Zone 5a
Wapello	Zone 5b
Washburn	Zone 5a
Washington	Zone 5b
Washta	Zone 5a
Waterloo	Zone 5a
Waterville	Zone 5a
Watkins	Zone 5a
Waucoma	Zone 5a
Waukee	Zone 5a and 5b
Waukon	Zone 5a
Waverly	Zone 5a
Wayland	Zone 5b
Webb	Zone 5a
Webster	Zone 5b
Webster City	Zone 5a
Weldon	Zone 5b
Wellman	Zone 5b
Wellsburg	Zone 5a
Welton	Zone 5a and 5b
Wesley	Zone 5a
West Amana	Zone 5a and 5b
West Bend	Zone 5a
West Branch	Zone 5b
West Burlington	Zone 6a
West Chester	Zone 5b
West Des Moines	Zone 5b
West Liberty	Zone 5b
West Okoboji	Zone 5a
West Point	Zone 6a
West Union	Zone 5a
Westfield	Zone 5a
Westgate	Zone 5a
Weston	Zone 5b
Westphalia	Zone 5b
Westside	Zone 5a
Westwood	Zone 5b
What Cheer	Zone 5b
Wheatland	Zone 5a and 5b
Whiting	Zone 5a
Whittemore	Zone 5a
Whitten	Zone 5a
Willey	Zone 5a
Williams	Zone 5a
Williamsburg	Zone 5a and 5b
Williamson	Zone 5b
Wilton	Zone 5b
Windsor Heights	Zone 5b
Winfield	Zone 5b
Winterset	Zone 5b
Winthrop	Zone 5a
Wiota	Zone 5a and 5b
Woden	Zone 5a
Woodbine	Zone 5a and 5b
Woodburn	Zone 5b
Woodward	Zone 5a and 5b
Woolstock	Zone 5a
Worthington	Zone 5a
Wyoming	Zone 5a
Yale	Zone 5a
Yetter	Zone 5a
Yorktown	Zone 5b
Zearing	Zone 5a
Zwingle	Zone 5a