| Eastern Iowa Power Cooperative | DMR | Conventional Networked | Various | Multi-County [6] | 2021-08-13 |
| Ag Partners | LTR | Standard | Fonda | Pocahontas | 2022-06-02 |
| Alliant Energy | DMR | Tier 3 Standard | Various | Multi-County [140] | 2024-12-23 |
| Alpha Wireless Communications Company | Motorola | Type II | Fostoria | Clay | 2013-03-03 |
| Alpha-Ancom Connect Plus | DMR | Motorola Connect Plus (TRBO) | | Multi-County [29] | 2023-12-10 |
| AmerenMissouri (P25) | Project 25 | Phase I | St Louis Metro Area/E MO | Multi-County [58] | 2024-11-23 |
| Archer Daniels Midland | DMR | Motorola Connect Plus (TRBO) | Cedar Rapids | Linn | 2019-05-22 |
| Archer Daniels Midland | DMR | Tier 3 Standard | Decatur | Multi-County [2] | 2024-09-07 |
| Archer Daniels Midland Company - Clinton | LTR | Standard | Clinton | Clinton | 2013-05-19 |
| Artistic Waste | Motorola | Type II | Des Moines | Polk | 2012-11-26 |
| Basin Electric Power Cooperative | MPT-1327 | Standard | Bismarck | Multi-County [56] | 2022-11-06 |
| Business Communications | LTR | Standard | Des Moines | Polk | 2011-02-14 |
| Business Radio Sales & Service (LTR) | LTR | Standard | Iowa City | Johnson | 2018-07-20 |
| Business Radio Sales and Service (NXDN 4800) | NXDN | NEXEDGE 4800 | Iowa City | Johnson | 2024-12-30 |
| Business Radio Sales and Service (NXDN 9600) | NXDN | NEXEDGE 9600 | Iowa City | Johnson | 2018-11-05 |
| Cargill | NXDN | NEXEDGE 9600 | Cedar Rapids | Linn | 2024-09-03 |
| Case Corporation | LTR | Standard | Burlington | Des Moines | 2022-11-08 |
| City of Davenport - Public Works | DMR | Motorola Connect Plus (TRBO) | Davenport | Scott | 2024-02-21 |
| College Community Schools | DMR | Motorola Capacity Plus Single Site (TRBO) | Cedar Rapids | Linn | 2024-08-30 |
| Comelec (DMR) | DMR | Motorola Capacity Plus Multi Site (TRBO) | Various | Scott | 2022-01-11 |
| Communications Engineering Company (DMR) | DMR | Motorola Connect Plus (TRBO) | Cedar Rapids | Multi-County [2] | 2024-05-24 |
| Communications Engineering Company (Motorola) | Motorola | Type II | Cedar Rapids | Linn | 2018-05-07 |
| Corn Belt Power Cooperative | DMR | Motorola Connect Plus (TRBO) | Multiple | Multi-County [41] | 2019-12-07 |
| Dairyland Power Cooperative | DMR | Tier 3 Capacity Max | Various | Multi-County [44] | 2024-11-17 |
| Davenport Community School District | DMR | Motorola Capacity Plus Multi Site (TRBO) | Davenport | Scott | 2024-12-13 |
| Deere and Company | LTR | Standard | Des Moines | Polk | 2007-12-02 |
| Deere and Company - DMR (IL/IA) | DMR | Motorola Connect Plus (TRBO) | Multiple | Multi-County [3] | 2024-04-21 |
| Duane Arnold Energy Center | NXDN | NEXEDGE 4800 | Palo | Linn | 2024-06-10 |
| East Central Iowa Rural Electric Cooperative | DMR | Conventional Networked | | Multi-County [2] | 2017-12-15 |
| Electronic Applications | LTR | Standard | Burlington | Des Moines | 2020-07-20 |
| Electronic Engineering | Motorola | Type IIi Hybrid | Des Moines | Polk | 2013-03-25 |
| Electronic Engineering | DMR | Motorola Capacity Plus Single Site (TRBO) | Cedar Rapids | Linn | 2024-09-23 |
| Electronic Engineering (Davenport) | LTR | Standard | Davenport | Multi-County [2] | 2024-06-24 |
| Electronic Engineering (Des Moines) | Motorola | Type IIi Hybrid | Des Moines | Polk | 2017-07-03 |
| Electronic Engineering (Fort Dodge) | Motorola | Type II | Fort Dodge | Webster | 2011-02-17 |
| Electronic Engineering (Mason City) | Motorola | Type II Smartnet | Mason City | Cerro Gordo | 2020-08-08 |
| Electronic Engineering (Ottumwa) | Motorola | Type II Smartnet | Ottumwa | Wapello | 2013-12-01 |
| Electronic Engineering Sioux City | Motorola | Type II | Sioux City | Woodbury | 2015-05-31 |
| Electronic Engineering SMR | Motorola | Type II Smartnet | Ames | Story | 2017-02-25 |
| Electronic Radio Service (DMR) | DMR | Motorola Capacity Plus Single Site (TRBO) | Des Moines | Polk | 2018-05-07 |
| Electronic Radio Services (Motorola) | Motorola | Type IIi Hybrid | Des Moines | Polk | 2018-05-07 |
| Equistar Chemical | NXDN | NEXEDGE 9600 | Clinton | Clinton | 2024-06-02 |
| ESI Talk | NXDN | NEXEDGE 4800 | Multiple | Multi-County [6] | 2021-09-25 |
| Firestone Tire and Rubber (460 MHz) | LTR | Standard | Des Moines | Polk | 2011-02-20 |
| Firestone Tire and Rubber (900 MHz) | LTR | Standard | Des Moines | Polk | 2011-02-20 |
| Flint Hills Resources Shell Rock, LLC | DMR | Motorola Capacity Plus Single Site (TRBO) | Shell Rock | Butler | 2016-05-22 |
| General Mills | DMR | Motorola Connect Plus (TRBO) | Cedar Rapids | Linn | 2017-10-09 |
| General Mills | DMR | Motorola Capacity Plus Single Site (TRBO) | Cedar Rapids | Linn | 2024-09-03 |
| Gerdau Ameristeel | DMR | Motorola Capacity Plus Single Site (TRBO) | Wilton | Muscatine | 2024-09-07 |
| Grain Processing - Muscatine IA | DMR | Motorola Capacity Plus Single Site (TRBO) | Muscatine | Muscatine | 2022-11-10 |
| Graybill Electronics (LTR) | LTR | Standard | Cedar Rapids | Linn | 2018-05-07 |
| Graybill Electronics (NXDN) | NXDN | Icom IDAS Type D | Hiawatha | Linn | 2018-05-07 |
| Harlan Community School District | NXDN | NEXEDGE 4800 | Harland | Shelby | 2023-10-02 |
| Harrah's Council Bluffs | DMR | Hytera XPT | Council Bluffs | Pottawattamie | 2021-10-19 |
| Hilltop Communications / ESItalk | NXDN | NEXEDGE 4800 | Red Wing, MN | Multi-County [19] | 2024-03-05 |
| Horseshoe Council Bluffs | DMR | Hytera XPT | Council Bluffs | Pottawattamie | 2021-10-19 |
| Iowa City | Motorola | Type II Smartnet | Iowa City | Johnson | 2013-12-02 |
| Iowa City | DMR | Motorola Connect Plus (TRBO) | Iowa City | Johnson | 2022-02-13 |
| Iowa Communications | Motorola | Type II | Dubuque | Dubuque | 2011-02-20 |
| Iowa Department of Corrections | DMR | Tier 3 Standard | Various | Multi-County [9] | 2024-05-24 |
| Iowa DMR Users Group | DMR | Conventional Networked | Various | Multi-County [28] | 2022-02-10 |
| Iowa Fertilizer Company | DMR | Motorola Capacity Plus Single Site (TRBO) | Wever | Lee | 2020-08-30 |
| Iowa Premium Beef | DMR | Motorola Capacity Plus Single Site (TRBO) | Toledo | Tama | 2018-06-26 |
| Iowa State Fairgrounds | DMR | Motorola Capacity Plus Single Site (TRBO) | Des Moines | Polk | 2022-08-23 |
| Iowa State University | Motorola | Type II Smartnet | Ames | Story | 2020-07-28 |
| Iowa Statewide Interoperable Communications System (ISICS) | Project 25 | Phase II | Statewide | Multi-County [3] | 2024-12-30 |
| Isle of Capri Casino - Waterloo | DMR | Motorola Capacity Plus Single Site (TRBO) | Waterloo | Black Hawk | 2017-06-14 |
| John Deere | DMR | Tier 3 Standard | Various | Black Hawk | 2024-05-27 |
| JRS Pharma | DMR | Motorola Capacity Plus Multi Site (TRBO) | Cedar Rapids | Linn | 2024-09-06 |
| Kraft Heinz Foods | DMR | Motorola Capacity Plus Single Site (TRBO) | Cedar Rapids | Linn | 2024-09-07 |
| Linn County REC | DMR | Conventional Networked | Marion | Multi-County [5] | 2024-09-04 |
| Linn-Mar School District | DMR | Motorola Capacity Plus Single Site (TRBO) | Marion | Linn | 2024-08-30 |
| LWC Communications - Des Moines | DMR | Motorola Capacity Plus Single Site (TRBO) | Des Moines | Multi-County [8] | 2021-09-11 |
| Maytag | LTR | Standard | Newton | Jasper | 2010-07-26 |
| Meskwaki Bingo-Casino-Hotel | DMR | Motorola Capacity Plus Single Site (TRBO) | Tama | Tama | 2019-02-14 |
| Mid American Energy | MPT-1327 | Standard | Various | Multi-County [23] | 2015-11-11 |
| Mid American Energy Co | DMR | Motorola Capacity Plus Single Site (TRBO) | Bettendorf | Scott | 2024-09-07 |
| Midamerican Energy (Council Bluffs) | DMR | Motorola Capacity Plus Single Site (TRBO) | Council Bluffs | Pottawattamie | 2021-10-18 |
| MidAmerican Energy Company | DMR | Motorola Capacity Plus Single Site (TRBO) | Muscatine | Louisa | 2020-07-28 |
| MotoNet CP+ (DMR) | DMR | Motorola Connect Plus (TRBO) | Various | Multi-County [46] | 2024-12-09 |
| Mt Mercy University | NXDN | Icom IDAS Type C | Cedar Rapids | Linn | 2023-11-06 |
| Nordstrom Distribution Center | NXDN | Icom IDAS Type D | Cedar Rapids | Linn | 2024-09-03 |
| North Central Correctional Facility | DMR | Tier 3 Standard | Rockwell City | Calhoun | 2016-08-15 |
| Northeast Missouri Electric Power Cooperative | DMR | Conventional Networked | Palmyra | Multi-County [10] | 2024-03-30 |
| Oakland Foods | Motorola | Type II | Oakland | Pottawattamie | 2011-02-10 |
| Omaha Regional Interoperability Network (ORION) | Project 25 | Phase II | Omaha | Multi-County [11] | 2024-10-05 |
| Pinnacle Foods - Fort Madison (DMR) | DMR | Motorola Capacity Plus Single Site (TRBO) | Fort Madison | Lee | 2016-09-06 |
| Pleasant Valley Community School District | NXDN | Icom IDAS Type D | Pleasant Valley | Scott | 2020-06-05 |
| POET Biorefining | DMR | Motorola Capacity Plus Single Site (TRBO) | Hanlontown | Worth | 2019-10-28 |
| Prairie Meadows Casino | DMR | Motorola Capacity Plus Single Site (TRBO) | Altoona | Polk | 2018-06-06 |
| Principal Life Insurance | DMR | Motorola Capacity Plus Single Site (TRBO) | Des Moines | Polk | 2016-06-12 |
| Radio Communications | NXDN | NEXEDGE 9600 | Cedar Rapids | Linn | 2024-05-27 |
| Radio Communications Company, Inc. | LTR | Standard | Waterloo | Black Hawk | 2011-02-27 |
| Red Star Yeast | DMR | Motorola Capacity Plus Single Site (TRBO) | Cedar Rapids | Linn | 2024-09-07 |
| SARA Network | Project 25 | Phase II | Various | Multi-County [21] | 2024-12-29 |
| Sears Manufacturing (Davenport IA) | DMR | Motorola Capacity Plus Single Site (TRBO) | Davenport | Scott | 2020-07-19 |
| Siemens Energy Ft. Madison | DMR | Motorola Capacity Plus Single Site (TRBO) | Ft. Madison | Lee | 2024-11-07 |
| Snap on Tools | NXDN | NEXEDGE 4800 | Algona | Kossuth | 2019-10-28 |
| SOLFAN, Inc. | LTR | Standard | Waterloo | Black Hawk | 2024-05-27 |
| STARCOM21 Statewide Illinois | Project 25 | Phase II | Statewide | Multi-County [5] | 2024-12-28 |
| Story County | Motorola | Type IIi Hybrid | Alleman | Story | 2021-06-01 |
| T.I.P. Rural Electric Cooperative | DMR | Conventional Networked | Brooklyn | Multi-County [10] | 2017-08-22 |
| Target Distribution Centers | NXDN | NEXEDGE 4800 | Multiple | Multi-County [14] | 2024-08-24 |
| Tate and Lyle | LTR | Standard | Tara | Webster | 2011-02-10 |
| Tri-State Comm Climbing Hill | LTR | Standard | Climbing Hill | Woodbury | 2014-02-22 |
| Tri-State Comm Sioux City | LTR | Standard | Sioux City | Woodbury | 2015-05-31 |
| University of Iowa Hospitals and Clinics | NXDN | NEXEDGE 9600 | Iowa City | Johnson | 2022-06-20 |
| Waterloo | LTR | Standard | Waterloo | Black Hawk | 2024-05-24 |
| Westcom | Motorola | Type II Smartnet | West Des Moines | Polk | 2021-06-21 |
| WRC Communications | Motorola | Type II | Marshalltown | Marshall | 2013-02-21 |
| WRC Communications - Des Moines | DMR | Motorola Capacity Plus Single Site (TRBO) | Des Moines | Polk | 2016-10-27 |
