| Airway Heights Corrections Center | Project 25 | Phase I | Various | Spokane | 2020-10-22 |
| Alaska Airlines (SeaTac Airport) | DMR | Motorola Capacity Plus Multi Site (TRBO) | Seattle | King | 2022-06-11 |
| Amazon HQ | DMR | Tier 3 Standard | Seattle | King | 2024-09-16 |
| Avista Utilities | MPT-1327 | Standard | Various | Multi-County [21] | 2022-10-06 |
| Bechtel Corporation, (Hanford) | Motorola | Type II Smartnet | Hanford | Benton | 2010-02-16 |
| Bellevue Collection | DMR | Motorola Capacity Plus Multi Site (TRBO) | Bellevue | King | 2021-07-27 |
| Bellingham / Whatcom County | LTR | MultiNet | Bellingham | Whatcom | 2020-10-24 |
| Benton County 800 | Project 25 | Phase I | Benton County | Multi-County [2] | 2024-01-05 |
| Bill & Melinda Gates Foundation | DMR | Motorola Capacity Plus Multi Site (TRBO) | Seattle | King | 2024-10-24 |
| Boeing P25 | Project 25 | Phase I | Varies | Multi-County [4] | 2022-04-29 |
| Boeing Wide Area | Motorola | Type II SmartZone | Various | Multi-County [4] | 2020-10-22 |
| BP Cherry Point Refinery | Project 25 | Phase I | Ferndale | Whatcom | 2024-02-03 |
| Central Washington University | LTR | Standard | Ellensburg | Kittitas | 2020-10-22 |
| Chelan County Public Utility District | DMR | Tier 3 Standard | Chelan | Chelan | 2020-03-14 |
| City of Kent | NXDN | NEXEDGE 4800 | Kent | King | 2016-07-22 |
| Clark Communications -TRBO DMR | DMR | Motorola Capacity Plus Multi Site (TRBO) | Multiple | Multi-County [6] | 2022-09-24 |
| Columbia Communications | NXDN | NEXEDGE 4800 | Kennewick | Benton | 2018-11-17 |
| Columbia Communications DMR | DMR | Motorola Capacity Plus Single Site (TRBO) | Kennewick | Benton | 2016-08-20 |
| Community Colleges of Spokane | NXDN | NEXEDGE 4800 | Spokane | Spokane | 2022-11-12 |
| CRESA 911 | Project 25 | Phase II | Vancouver | Multi-County [4] | 2024-04-01 |
| CSI Communications | LTR | Standard | Aberdeen | Multi-County [2] | 2023-03-14 |
| Day Wireless (DMR) | DMR | Tier 3 Capacity Max | Various | Multi-County [42] | 2024-11-15 |
| Day Wireless UHF | LTR | Standard | Spokane | Spokane | 2015-09-08 |
| Delta Airlines (SeaTac) | DMR | Motorola Capacity Plus Single Site (TRBO) | Seattle | King | 2020-10-22 |
| Doppler Building | DMR | Motorola Capacity Plus Single Site (TRBO) | Seattle | King | 2023-11-27 |
| Eastern Washington University | NXDN | NEXEDGE 9600 | Cheney | Spokane | 2018-04-19 |
| Energy Northwest | Project 25 | Phase I | Tri-Cities | Multi-County [2] | 2016-08-18 |
| Federal Detention Center SeaTac | Motorola | Type II | Sea Tac | King | 2020-10-22 |
| FleetNet / Silke Communications | NXDN | NEXEDGE 4800 | Various | Multi-County [25] | 2024-09-25 |
| Frontier Digital Network | Project 25 | Phase II | Varies | Multi-County [4] | 2024-09-06 |
| Gonzaga University | NXDN | NEXEDGE 4800 | Spokane | Spokane | 2018-04-19 |
| Grant County Public Utilities | DMR | Tier 3 Standard | Various | Grant | 2016-09-18 |
| Great Wolf Resorts | LTR | Standard | Centralia | Thurston | 2021-02-19 |
| Hewlett Packard (Vancouver) | Motorola | Type II | Vancouver | Clark | 2010-02-20 |
| Huntwood Industries | LTR | Standard | Liberty Lake | Spokane | 2018-04-11 |
| J And R Electronics Davenport UHF | LTR | Standard | Davenport | Lincoln | 2011-03-12 |
| Justice Integrated Wireless Network | Project 25 | Phase II | Various | Multi-County [55] | 2024-09-13 |
| Kaiser Permanente Medical Centers | DMR | Conventional Networked | Various | Multi-County [3] | 2023-03-19 |
| Kapstone Paper and Packaging | DMR | Motorola Capacity Plus Single Site (TRBO) | Longview | Cowlitz | 2021-02-19 |
| King County Metro Transit | Project 25 | Phase II | Seattle | King | 2024-09-08 |
| Kitsap Transit | DMR | Tier 3 Standard | Bremerton | Kitsap | 2023-09-02 |
| Lumen Field (Seahawks and Sounders) | DMR | Motorola Capacity Plus Single Site (TRBO) | Seattle | King | 2023-01-02 |
| MACC 911 | Project 25 | Phase I | Moses Lake | Grant | 2021-02-01 |
| Marysville Public Works | Motorola | Type II Smartnet | Marysville | Snohomish | 2011-10-14 |
| Meadowwood Partnership | LTR | Standard | Liberty Lake | Spokane | 2013-08-19 |
| Mercer Island School District | DMR | Motorola Capacity Plus Multi Site (TRBO) | Mercer Island | King | 2024-10-24 |
| Microsoft Headquarters | DMR | Motorola Capacity Plus Multi Site (TRBO) | Redmond | King | 2023-09-22 |
| Mid Columbia Communications Coop | Motorola | Type II | Tri-Cities | Benton | 2016-07-24 |
| Mobile Talk Wireless | NXDN | NEXEDGE 4800 | Various | Multi-County [3] | 2022-09-23 |
| Mt Baker Recreation | LTR | Standard | Glacier | Whatcom | 2021-02-19 |
| Muckleshoot Casino | DMR | Motorola Capacity Plus Single Site (TRBO) | Auburn | King | 2022-06-09 |
| Northern Quest Casino | DMR | Motorola Capacity Plus Multi Site (TRBO) | Airway Heights | Spokane | 2017-05-04 |
| Northwest Detention Center | DMR | Motorola Capacity Plus Single Site (TRBO) | Tacoma | Pierce | 2024-07-03 |
| Oregon State Radio Project | Project 25 | Phase II | Varies | Multi-County [20] | 2024-11-17 |
| Pacific Lutheran University | DMR | Motorola Capacity Plus Single Site (TRBO) | Parkland | Pierce | 2016-09-21 |
| Pacific NorthWest DMR | DMR | Conventional Networked | Various | Multi-County [27] | 2020-03-05 |
| Pacific Woodtech Products | LTR | Standard | Burlington | Skagit | 2021-02-19 |
| Pangborn Memorial Airport | iDEN | Standard | East Wenatchee | Douglas | 2010-02-16 |
| Phillips 66 Refineries | Project 25 | Phase II | Various | Multi-County [12] | 2024-10-15 |
| Port Of Seattle (P25) | Project 25 | Phase II | Seattle | King | 2021-11-23 |
| Port of Seattle Public Safety | Motorola | Type II SmartZone | Seattle | King | 2024-06-01 |
| Providence Medical Centers | DMR | Conventional Networked | Various | Multi-County [9] | 2021-02-26 |
| Providence Mount Saint Vincent | DMR | Motorola Capacity Plus Single Site (TRBO) | Seattle | King | 2024-10-17 |
| PSRS Tacoma/Puyallup | Project 25 | Phase II | Tacoma | Pierce | 2024-09-06 |
| Puget Sound Emergency Radio Network (PSERN) | Project 25 | Phase II | Seattle | King | 2024-09-06 |
| Puget Sound Energy | MPT-1327 | Standard | Various | Multi-County [14] | 2024-08-19 |
| Renewable Energy Corporation | DMR | Motorola Capacity Plus Single Site (TRBO) | Moses Lake | Grant | 2016-07-25 |
| SEATTLE CHILDRENS RESEARCH INSTITUTE | DMR | Motorola Capacity Plus Multi Site (TRBO) | Seattle | King | 2023-11-09 |
| Shoreline School District 412 | DMR | Motorola Capacity Plus Multi Site (TRBO) | Shoreline | King | 2024-10-24 |
| Silver Reef Casino | DMR | Motorola Capacity Plus Single Site (TRBO) | Ferndale | Whatcom | 2017-01-09 |
| Sno911 | Project 25 | Phase II | Snohomish County | Snohomish | 2024-11-14 |
| Snohomish County Public Safety (SERS) | Motorola | Type II SmartZone | Everett | Snohomish | 2023-10-12 |
| Snohomish County PUD District 1 | DMR | Motorola Capacity Plus Single Site (TRBO) | Snohomish County | Snohomish | 2024-11-14 |
| Snoqualmie Casino (Snoqualmie Entertainment) | DMR | Motorola Capacity Plus Single Site (TRBO) | Snoqualmie | King | 2020-11-01 |
| South Sound 911 | Project 25 | Phase II | Lakewood | Multi-County [2] | 2024-09-06 |
| Spectrum Communications Wenatchee | LTR | Standard | Wenatchee | Chelan | 2011-10-14 |
| Spectrum Communications (Royal City) | LTR | Standard | Royal City | Grant | 2016-01-20 |
| Spokane Regional Emergency Communications System | Project 25 | Phase I | Spokane | Spokane | 2018-01-16 |
| Spokane Transit Authority | Project 25 | Phase II | Spokane | Spokane | 2016-11-26 |
| Spokane Tribe Casino | NXDN | NEXEDGE 4800 | Airway Heights | Spokane | 2018-03-20 |
| Stafford Creek Correctional Facility | Motorola | Type II Smartnet | Aberdeen | Grays Harbor | 2020-10-22 |
| Tacoma Public Schools | DMR | Motorola Capacity Plus Multi Site (TRBO) | Tacoma | Pierce | 2021-07-16 |
| Tacoma Public Utilities | Project 25 | Phase I | Tacoma | Pierce | 2024-09-06 |
| Tacoma Services | Motorola | Type II | Tacoma | Pierce | 2016-10-19 |
| Thurston County 911 (T-COMM 911) | Project 25 | Phase II | Olympia, WA | Thurston | 2024-09-06 |
| TRBOWEST (WA-OR-ID-CA) | DMR | Motorola Connect Plus (TRBO) | Various | Multi-County [48] | 2024-08-13 |
| Tri-County Metropolitan Transit (TriMet) | Project 25 | Phase I | Portland | Multi-County [5] | 2024-11-20 |
| Twin Rivers Correctional Facility P25 | Project 25 | Phase I | Monroe | Snohomish | 2024-02-10 |
| U.S. Oil and Refining Company | DMR | Motorola Capacity Plus Single Site (TRBO) | Tacoma | Pierce | 2021-02-07 |
| United States Air Force (57C) | Project 25 | Phase I | Multiple | Multi-County [21] | 2024-11-07 |
| United States Department of Defense (14C) | Project 25 | Phase I | Various | Multi-County [62] | 2024-09-10 |
| US Army CONUS Enterprise Land Mobile Radio Network (ACE LMR) | Project 25 | Phase II | Various | Multi-County [20] | 2024-10-06 |
| US Department of Energy - Hanford Reservation | EDACS | Standard | Richland | Benton | 2010-02-16 |
| WA State Patrol | Project 25 | Phase II | Various | Multi-County [11] | 2024-09-06 |
| Warden Hutterian Brethren | NXDN | NEXEDGE 4800 | Lind | Grant | 2020-10-22 |
| Washington Department of Transportation (P25) | Project 25 | Phase II | Various | Multi-County [35] | 2024-11-17 |
| Washington State Capitol | Motorola | Type II Smartnet | Olympia | Thurston | 2020-10-22 |
| Washington State Convention Center | DMR | Motorola Capacity Plus Single Site (TRBO) | Seattle | King | 2021-01-21 |
| Washington State University | LTR | Standard | Pullman | Whitman | 2020-10-22 |
| Weyerhaeuser | LTR | Standard | Longview | Cowlitz | 2004-01-09 |
| Whisler Communications | LTR | Standard | Hoquiam | Grays Harbor | 2021-02-19 |
| Wiztronics Inc | NXDN | NEXEDGE 4800 | Various | Multi-County [13] | 2024-02-24 |
| Yakima City Services | Motorola | Type IIi Hybrid | Yakima | Yakima | 2020-10-22 |
