MRSC posts in the following newspapers to fulfill the legal notice requirement of participating public agencies in these counties:
| County | Newspaper |
| Adams | Othello Outlook (Othello) |
| Benton | Tri-City Herald (Kennewick) |
| Chelan | The Wenatchee World (Wenatchee) |
| Clallam | Peninsula Daily News (Port Angeles) |
| Clark | The Columbian (Vancouver) |
| Columbia | Dayton Chronicle (Dayton) |
| Cowlitz | The Daily News (Longview) |
| Douglas | The Wenatchee World (Wenatchee) |
| Ferry | Ferry County View (Republic) |
| Franklin | Franklin County Graphic (Connell) |
| Grant | The Columbia Basin Herald (Moses Lake) |
| Grays Harbor | The Daily World (Aberdeen) |
| Island | Whidbey News-Times (Coupeville) |
| Jefferson | The Leader (Port Townsend) |
| King | The Seattle Times (Seattle) |
| Kitsap | Kitsap Sun (Bremerton) |
| Kittitas | The Daily Record (Ellensburg) |
| Klickitat | The Goldendale Sentinel (Goldendale) |
| Lincoln | The Odessa Record (Odessa) & The Davenport Times |
| Lewis | The Chronicle (Centralia) |
| Mason | Shelton-Mason County Journal (Shelton) |
| Okanogan | The Omak – Okanogan Chronicle (Omak) |
| Pacific | Willapa Harbor Herald (Raymond) |
| Pend Oreille | The Miner (Newport) |
| Pierce | The News Tribune (Tacoma) |
| San Juan | The Journal of the San Juan Islands |
| Skagit | Skagit Valley Herald (Mount Vernon) |
| Skamania | The Skamania County Pioneer (Stevenson) |
| Snohomish | The Daily Herald (Everett) |
| Spokane | The Spokesman Review (Spokane) |
| Stevens | The Statesman Examiner (Colville) |
| Thurston | The Olympian (Olympia) |
| Wahkiakum | The Wahkiakum County Eagle (Cathlamet) |
| Walla Walla | The Waitsburg Times (Waitsburg) |
| Whatcom | The Bellingham Herald (Bellingham) |
| Whitman/Asotin | Whitman County Gazette (Colfax) |
| Yakima | The Yakima Herald (Yakima) |
| Statewide | Seattle Daily Journal of Commerce |
| Statewide | Office of Minority & Women’s Business Enterprises |