| BLUE MT LODGEMount Vernon, OR · Active | Mount Vernon, OR | Other | Apr 2, 2024 | Active |
| ROLLIN'TECH LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Apr 18, 2024 | Active |
| HUMPHREY FAMILY RANCH, LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | May 16, 2024 | Active |
| WES' CLEANING SERVICE LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | May 21, 2024 | Active |
| KIMBALL RANCH LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | May 24, 2024 | Active |
| FOULWATER BAY PRESSMount Vernon, OR · Active | Mount Vernon, OR | Other | Jun 24, 2024 | Active |
| GRANT COUNTY BASEBALL, LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Sep 19, 2024 | Active |
| VF PROPERTY MANAGEMENT LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Sep 17, 2024 | Active |
| CROWNED ROSE ENTERPRISES LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Dec 5, 2024 | Active |
| INFINITY WURXS LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Jan 3, 2025 | Active |
| RIXEN RANCH LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Jan 15, 2025 | Active |
| MOUNT VERNON MINI STORAGEMount Vernon, OR · Active | Mount Vernon, OR | Other | Apr 7, 2025 | Active |
| TRIPLE H BARTDENDING LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | May 1, 2025 | Active |
| CANYON MOUNTAIN TRADERSMount Vernon, OR · Active | Mount Vernon, OR | Other | May 7, 2025 | Active |
| HIDDEN SPRINGS FARMMount Vernon, OR · Active | Mount Vernon, OR | Other | May 12, 2025 | Active |
| HIGH COUNTRY XCAVATINGMount Vernon, OR · Active | Mount Vernon, OR | Other | Jun 16, 2025 | Active |
| TIMBER BASIN FENCE COMPANY LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Jul 21, 2025 | Active |
| A.A.A. THUNDERBOLT FIRE SERVICE, INC.Mount Vernon, OR · Active | Mount Vernon, OR | Corporation | Apr 30, 1991 | Active |
| RISING7LIVESTOCK LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Nov 25, 2025 | Active |
| TYS MOBILE SERVICES, LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Jan 7, 2026 | Active |
| MOON MOUNTAIN COFFEE LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Feb 10, 2026 | Active |
| J&M JOINT VENTURE LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Mar 10, 2026 | Active |
| R&N ELITE PROPERTY MANAGEMENT LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Mar 16, 2026 | Active |
| AMY MYHRE LCSW LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Mar 27, 2026 | Active |
| VALLEY VIEW BROADCASTING, INC.Mount Vernon, OR · Active | Mount Vernon, OR | Nonprofit | Jun 15, 2001 | Active |
| CNJ CONSTRUCTION LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Apr 9, 2026 | Active |
| MARK HANSEN CONTRACTING LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Jun 1, 2026 | Active |
| DAWSON RESTORATIVE MASSAGEMount Vernon, OR · Active | Mount Vernon, OR | Other | Jul 6, 2026 | Active |
| ARIES PROFORMANCEMount Vernon, OR · Active | Mount Vernon, OR | Other | Jul 17, 2026 | Active |
| NORLAND HEAVY IRON REPAIR LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Sep 1, 2026 | Active |
| JAMULAREXMount Vernon, OR · Active | Mount Vernon, OR | Other | Sep 29, 2026 | Active |
| M.D. COMMUNICATIONS, L.L.C.Mount Vernon, OR · Active | Mount Vernon, OR | LLC | Mar 8, 2005 | Active |
| L & L EXCAVATING, INC.Mount Vernon, OR · Active | Mount Vernon, OR | Corporation | Jan 3, 1992 | Active |
| FIELDS PEAK KENNELS, L.L.C.Mount Vernon, OR · Active | Mount Vernon, OR | LLC | Jun 21, 2005 | Active |
| MCKENNA RANCHESMount Vernon, OR · Active | Mount Vernon, OR | Other | Jun 4, 1992 | Active |
| FRONTIER RENTAL, INC.Mount Vernon, OR · Active | Mount Vernon, OR | Corporation | May 19, 2006 | Active |
| SUPERIOR HOME BUILDERS CORP.Mount Vernon, OR · Active | Mount Vernon, OR | Corporation | Feb 13, 2001 | Active |
| HUGHES INCORPORATEDMount Vernon, OR · Active | Mount Vernon, OR | Corporation | Apr 23, 2007 | Active |
| DAKOM LOGGING, INC.Mount Vernon, OR · Active | Mount Vernon, OR | Corporation | Dec 21, 1995 | Active |
| TIRICO RANCH, INC.Mount Vernon, OR · Active | Mount Vernon, OR | Corporation | Oct 9, 1986 | Active |
| KIM LEMONS LIVESTOCK, INC.Mount Vernon, OR · Active | Mount Vernon, OR | Corporation | Feb 9, 1996 | Active |
| HOME TELEPHONE COMPANYMount Vernon, OR · Active | Mount Vernon, OR | Corporation | Jan 11, 1954 | Active |
| SMUCKER QUALITY HOMES, INC.Mount Vernon, OR · Active | Mount Vernon, OR | Corporation | Sep 6, 1996 | Active |
| LIVING WORD CHRISTIAN CENTER, INCORPORATEDMount Vernon, OR · Active | Mount Vernon, OR | Nonprofit | Jan 4, 1955 | Active |
| MARK HANSEN CONTRACTINGMount Vernon, OR · Active | Mount Vernon, OR | Other | Jan 20, 2009 | Active |
| BROKEN LEG RANCHMount Vernon, OR · Active | Mount Vernon, OR | Other | Mar 27, 2009 | Active |
| SUNRISE CONSTRUCTION SPECIALTIES, LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Feb 24, 2010 | Active |
| STOUT LOGGING, INC.Mount Vernon, OR · Active | Mount Vernon, OR | Corporation | Mar 19, 1987 | Active |
| WIDOWS CREEK RANCH, LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | May 25, 2011 | Active |
| MARTIN LIVESTOCK SYSTEMS LLCMount Vernon, OR · Active | Mount Vernon, OR | LLC | Sep 2, 2011 | Active |