| Des Moines Police Dispatch 1 | Polk | Public Safety | 356 |
| Cerro Gordo County Sheriff, Mason City Police and Fire | Cerro Gordo | Public Safety | 72 |
| Davenport and Quad Cities Metro Police, Fire / EMS | Scott | Public Safety | 50 |
| Clinton County Sheriff and Fire, Clinton City Police | Clinton | Public Safety | 48 |
| Polk County, Dallas County, and Warren County Public Safety and ISP | Dallas | Public Safety | 36 |
| Cedar, Louisa, and Muscatine Counties Public Safety | Cedar | Public Safety | 33 |
| Linn County Public Safety | Linn | Public Safety | 27 |
| Marion County Public Safety | Marion | Public Safety | 24 |
| South East Iowa, West Central Illinois Public Safety | Des Moines | Public Safety | 19 |
| Council Bluffs Public Safety | Pottawattamie | Public Safety | 19 |
| Dallas County Sheriff, Fire and EMS, Perry Police | Dallas | Public Safety | 15 |
| Westcom Police Dispatch | Polk | Public Safety | 13 |
| Mills County Sheriff, Fire and EMS | Mills | Public Safety | 12 |
| Council Bluffs Fire and EMS | Pottawattamie | Public Safety | 12 |
| Poweshiek County Public Safety | Poweshiek | Public Safety | 11 |
| Cass County Public Safety, Iowa State Patrol | Cass | Public Safety | 10 |
| Jasper County Law Enforcement | Jasper | Public Safety | 10 |
| Johnson County Fire/EMS | Johnson | Public Safety | 10 |
| Butler, Grundy, Hardin, and Franklin County Public Safety | Butler | Public Safety | 9 |
| Algona Police and Fire | Kossuth | Public Safety | 9 |
| Waterloo-Cedar Falls Public Safety | Black Hawk | Public Safety | 7 |
| Lee, Clark and Hancock Counties Public Safety | Lee | Public Safety | 7 |
| Des Moines Area Amateur Repeaters | Polk | Amateur Radio | 7 |
| Pottawattamie County Public Safety | Pottawattamie | Public Safety | 7 |
| Wright County Public Safety - Digital | Wright | Public Safety | 7 |
| Maquoketa Area Public Safety | Jackson | Public Safety | 6 |
| Steel Highway Fort Madison Area Rail | Lee | Rail | 6 |
| Marshall County Public Safety Dispatch | Marshall | Public Safety | 6 |
| Black Hawk County Fire and EMS | Black Hawk | Public Safety | 5 |
| Des Moines County Public Safety | Des Moines | Public Safety | 5 |
| Westcom Fire and EMS Dispatch | Dallas | Public Safety | 4 |
| Des Moines County Public Safety / Henderson IL County | Des Moines | Public Safety | 4 |
| Greene County Public Safety (Digital) | Greene | Public Safety | 4 |
| Le Mars Fire and Rescue | Plymouth | Public Safety | 4 |
| Des Moines Fire/EMS | Polk | Public Safety | 4 |
| Clinton City Fire and Police | Clinton | Public Safety | 3 |
| Chickasaw County Sheriff, Fire, EMS and Roads | Chickasaw | Public Safety | 2 |
| South Central Iowa Counties Public Safety | Clarke | Public Safety | 2 |
| Omaha Area NOAA Weather Radio KIH61 | Harrison | Other | 2 |
| Howard and Mitchell County Public Safety | Howard | Public Safety | 2 |
| Jefferson County Fire / EMS | Jefferson | Public Safety | 2 |
| Louisa County Public Safety | Louisa | Public Safety | 2 |
| Sioux Falls Area NOAA Weather Radio WXM28 | Lyon | Other | 2 |
| Pocahontas County Area Public Safety | Pocahontas | Public Safety | 2 |
| Polk County Fire and EMS | Polk | Public Safety | 2 |
| Quad Cities Area Railroads | Scott | Rail | 2 |
| Des Moines Area NOAA Weather Radio WXL57 | Adair | Other | 1 |
| Iowa Dept of Public Safety Dispatch - Area A | Appanoose | Public Safety | 1 |
| Waterloo Area NOAA Weather Radio WXL94 | Black Hawk | Other | 1 |
| Quad Cities Area NOAA Weather Radio WXJ73 | Cedar | Other | 1 |
| Northwest Iowa Railroad | Dickinson | Rail | 1 |
| Fayette County Fire | Fayette | Public Safety | 1 |
| Savanna Area Rail/Marine | Jackson | Rail | 1 |
| Mahaska County Fire Dispatch | Mahaska | Public Safety | 1 |
| Pottawattamie County Fire and EMS | Pottawattamie | Public Safety | 1 |
| Union County Public Safety | Union | Public Safety | 1 |
| Warren County Public Safety | Warren | Public Safety | 1 |
| Webster County Area Railroads | Webster | Rail | 1 |
| Winneshiek Fire | Winneshiek | Public Safety | 1 |
| Allamakee Fire | Allamakee | Public Safety | 0 |
| Audubon County Fire | Audubon | Public Safety | 0 |
| Benton County Area Railroads | Benton | Rail | 0 |
| Benton County SARA | Benton | Public Safety | 0 |
| NWS Des Moines Area MICRN Severe Weather Net | Boone | Other | 0 |
| Waverly Fire | Bremer | Public Safety | 0 |
| Albert City Fire | Buena Vista | Public Safety | 0 |
| Sioux Rapids Fire | Buena Vista | Public Safety | 0 |
| Alta Fire | Buena Vista | Public Safety | 0 |
| Alta Fire | Buena Vista | Public Safety | 0 |
| Lohrville Fire and Ambulance | Calhoun | Public Safety | 0 |
| Aurelia Fire | Cherokee | Public Safety | 0 |
| Clayton County/Grant County CP & BNSF Rail | Clayton | Rail | 0 |
| Grand Mound Area Rail | Clinton | Rail | 0 |
| Manilla Fire | Crawford | Public Safety | 0 |
| Floris Fire | Davis | Public Safety | 0 |
| Garden Grove Fire | Decatur | Public Safety | 0 |
| Decatur County EMS | Decatur | Public Safety | 0 |
| Greeley Fire | Delaware | Public Safety | 0 |
| Edgewood Ambulance | Delaware | Public Safety | 0 |
| Burlington Junction Railway/ BNSF Railway | Des Moines | Rail | 0 |
| Dickinson County Fire and Rescue | Dickinson | Public Safety | 0 |
| Emmet County 911 | Emmet | Public Safety | 0 |
| N0NHB 146.6550 MHz Repeater | Fremont | Amateur Radio | 0 |
| West Central Iowa Public Safety | Greene | Public Safety | 0 |
| Guthrie Center Fire | Guthrie | Public Safety | 0 |
| Yale Community Fire | Guthrie | Public Safety | 0 |
| Panora EMS | Guthrie | Public Safety | 0 |
| Bagley Fire | Guthrie | Public Safety | 0 |
| Stratford Fire Rescue | Hamilton | Public Safety | 0 |
| Hancock and Winnebago Counties Public Safety | Hancock | Public Safety | 0 |
| Mills Tower Rail | Hardin | Rail | 0 |
| Henry County Fire Dispatch | Henry | Public Safety | 0 |
| Mt Pleasant Area - BNSF Ottumwa Sub | Henry | Rail | 0 |
| Bellevue Area Rail | Jackson | Rail | 0 |
| Bellevue Fire/EMS | Jackson | Public Safety | 0 |
| Jasper County Fire and EMS | Jasper | Public Safety | 0 |
| Keota Fire | Keokuk | Public Safety | 0 |
| Sigourney Fire | Keokuk | Public Safety | 0 |
| Sigourney Ambulance | Keokuk | Public Safety | 0 |
| Lee County Public Safety | Lee | Public Safety | 0 |