| Des Moines | Iowa Assn. of Bus. & Ind. |
| Adel | Adel Partners Chamber of Commerce |
| Albia | Albia Area Chamber of Commerce |
| Algona | Algona Area Chamber of Commerce |
| Altoona | Altoona Area Chamber of Commerce |
| Ames | Ames Chamber of Commerce |
| Anamosa | Anamosa Chamber of Commerce |
| Ankeny | Ankeny Area Chamber of Commerce |
| Arnolds Park | Iowa Great Lakes Area Chamber of Commerce |
| Atlantic | Atlantic Area Chamber of Commerce |
| Audubon | Audubon Chamber of Commerce |
| Bedford | Bedford Area Chamber |
| Bellevue | Bellevue Area Chamber of Commerce |
| Belmond | Belmond Area Chamber of Commerce |
| Boone | Boone Area Chamber of Commerce |
| Britt | Britt Chamber of Commerce |
| Brooklyn | Brooklyn Chamber of Commerce |
| Burlington | Greater Burlington Partnership |
| Carroll | Carroll Chamber of Commerce |
| Cedar Rapids | Cedar Rapids Metro Eco. Alliance |
| Centerville | Centerville-Rathbun Lake Area Chamber of Commerce |
| Chariton | Chariton Area Chamber/Main Street |
| Charles City | Charles City Area Chamber of Commerce |
| Cherokee | Cherokee Chamber of Commerce |
| Clarinda | Clarinda Chamber of Commerce |
| Clarion | Clarion Chamber & Dev. |
| Clear Lake | Clear Lake Area Chamber of Commerce |
| Clinton | Clinton Area Chamber of Commerce |
| Colfax | Colfax Main Street |
| Conrad | Conrad Chamber-Main Street Inc. |
| Corning | Adams Community Chamber of Commerce |
| Council Bluffs | Council Bluffs Area Chamber of Commerce |
| Cresco | Cresco Area Chamber of Commerce |
| Creston | Creston Chamber of Commerce |
| Davenport | Quad Cities Chamber of Commerce |
| Decorah | Decorah Area Chamber of Commerce |
| Denison | Chamber & Dev. Cncl. of Crawford County |
| Des Moines | Greater Des Moines Partnership |
| DeWitt | DeWitt Chamber & Dev. Co. |
| Dubuque | Dubuque Area Chamber of Commerce |
| Dyersville | Dyersville Area Chamber of Commerce |
| Eagle Grove | Eagle Grove Area Chamber of Commerce |
| Eldora | Greater Eldora Chamber of Commerce Inc. |
| Eldridge | Eldridge-North Scott Chamber of Commerce |
| Elkader | Elkader Area Chamber of Commerce |
| Emmetsburg | Emmetsburg Chamber of Commerce |
| Essex | Essex Comm. Club |
| Estherville | Estherville Area Chamber of Commerce |
| Fairfield | Fairfield Area Chamber of Commerce |
| Forest City | Forest City Chamber of Commerce |
| Fort Dodge | Greater Fort Dodge Growth Alliance/Chamber |
| Fort Madison | Fort Madison Area Chamber of Commerce |
| Garner | Garner Chamber of Commerce |
| George | George Chamber of Commerce |
| Glenwood | Glenwood Area Chamber of Commerce |
| Greenfield | Greenfield Chamber/Main Street |
| Grimes | Grimes Chamber & Eco. Dev. |
| Grinnell | Grinnell Area Chamber of Commerce |
| Grundy Center | Grundy Center Chamber & Dev. |
| Guthrie Center | Guthrie Center Chamber of Commerce |
| Guttenberg | Guttenberg Chamber of Commerce |
| Hampton | Greater Franklin County Chamber of Commerce |
| Harlan | Shelby County Chamber of Commerce & Ind. |
| Hartley | Hartley Chamber of Commerce |
| Hawarden | Hawarden Chamber & Eco. Dev. Inc. |
| Holstein | Holstein Chamber of Commerce |
| Hudson | Hudson Chamber of Commerce |
| Hull | Hull Chamber of Commerce |
| Humboldt | Humboldt-Dakota City Chamber of Commerce |
| Ida Grove | Ida Grove Chamber of Commerce |
| Independence | Independence Area Chamber of Commerce |
| Indianola | Indianola Chamber of Commerce |
| Iowa City | Iowa City Area Chamber of Commerce |
| Iowa Falls | Iowa Falls Chamber/Main Street |
| Jefferson | Greene County Chamber & Tourism |
| Jesup | Jesup Chamber of Commerce |
| Johnston | Johnston Chamber of Commerce |
| Kalona | Kalona Area Chamber of Commerce |
| Keokuk | Keokuk Area Chamber of Commerce |
| Knoxville | Knoxville Chamber of Commerce |
| Lake City | Lake City Betterment Assn. |
| Lake Mills | Lake Mills Chamber Dev. Corp. |
| Laurens | Laurens Chamber |
| Le Claire | Le Claire Chamber of Commerce |
| Le Mars | Le Mars Area Chamber of Commerce |
| Lenox | Lenox Area Chamber of Commerce |
| Leon | Leon Chamber of Commerce |
| Manchester | Manchester Area Chamber of Commerce |
| Manning | Manning Chamber of Commerce |
| Maquoketa | Maquoketa Chamber of Commerce |
| Marengo | Marengo Chamber of Commerce |
| Marion | Marion Chamber of Commerce |
| Marshalltown | Marshalltown Area Chamber of Commerce |
| Mason City | Mason City Chamber of Commerce |
| McGregor | McGregor-Marquette Chamber of Commerce |
| Missouri Valley | Missouri Valley Chamber of Commerce |
| Monticello | Monticello Area Chamber of Commerce |
| Mount Ayr | Mount Ayr Chamber of Commerce |
| Mount Pleasant | Mount Pleasant Area Chamber Alliance |
| Mount Vernon | Mount Vernon-Lisbon Comm. Dev. Group |
| Muscatine | Greater Muscatine Chamber of Commerce & Ind. |
| Nevada | Nevada Chamber of Commerce |
| New Hampton | New Horizons Chamber of Commerce |
| Newton | Greater Newton Area Chamber of Commerce |
| Northwood | Northwood Area Chamber of Commerce |
| Norwalk | Norwalk Area Chamber of Commerce |
| Oelwein | Oelwein Chamber & Area Dev. |
| Onawa | Onawa Chamber of Commerce |
| Orange City | Orange City Chamber of Commerce |
| Osage | Osage Chamber of Commerce |
| Osceola | Osceola Chamber-Main Street |
| Oskaloosa | Oskaloosa Area Chamber & Dev. Group |
| Ottumwa | Ottumwa Area Chamber of Commerce |
| Panora | Panora Chamber of Commerce |
| Parkersburg | Parkersburg Chamber of Commerce |
| Pella | Pella Area Comm. & Eco. Alliance |
| Perry | Perry Area Chamber of Commerce |
| Pleasant Hill | Pleasant Hill Chamber of Commerce |
| Pleasantville | Pleasantville Chamber of Commerce |
| Pocahontas | Pocahontas Chamber of Commerce |
| Red Oak | Red Oak Chamber & Ind. Assn. |
| Remsen | Remsen Chamber of Commerce |
| Rock Rapids | Rock Rapids Chamber of Commerce |
| Rock Valley | Rock Valley Chamber of Commerce |
| Rockwell City | Rockwell City Chamber & Dev. |
| Rolfe | Rolfe Betterment Inc. |
| Sac City | Chamber-Main Street Sac City |
| Saint Ansgar | Saint Ansgar Comm. Chamber of Commerce |
| Sheldon | Sheldon Chamber & Dev. Corp. |
| Shenandoah | Shenandoah Chamber & Ind. Assn. |
| Sibley | Sibley Chamber of Commerce |
| Sioux Center | Sioux Center Chamber of Commerce |
| Sioux City | Siouxland Chamber of Commerce |
| Spencer | Spencer Chamber of Commerce |
| Spirit Lake | Spirit Lake Chamber of Commerce |
| Storm Lake | Storm Lake United |
| Story City | Story City Greater Chamber Connection |
| Strawberry Point | Strawberry Point Chamber of Commerce |
| Stuart | Stuart Chamber of Commerce |
| Tipton | Tipton Chamber of Commerce |
| Toledo | Tama-Toledo Area Chamber of Commerce |
| Traer | Traer Chamber of Commerce |
| Tripoli | Tripoli Comm. Club |
| Urbandale | Urbandale Chamber of Commerce |
| Vinton | Vinton Unlimited |
| Washington | Washington Chamber of Commerce |
| Waterloo | Greater Cedar Valley Alliance & Chamber |
| Waukee | Waukee Area Chamber of Commerce |
| Waukon | Waukon Chamber of Commerce |
| Waverly | Waverly Chamber of Commerce |
| Webster City | Webster City Area Dev. & Chamber of Commerce |
| West Bend | West Bend Chamber of Commerce |
| West Des Moines | West Des Moines Chamber of Commerce |
| West Liberty | West Liberty Chamber of Commerce |
| West Union | West Union Chamber of Commerce |
| Williamsburg | Williamsburg Chamber of Commerce |
| Wilton | Wilton Chamber of Commerce |
| Winterset | Madison County Chamber of Commerce |
| Woodbine | Woodbine Main Street Chamber of Commerce |