| SILVIES VALLEY RANCH WATER COMPANY, LLCSeneca, OR · Active | Seneca, OR | LLC | Mar 19, 2014 | Active |
| SAVANT TECHNOLOGY LLCSeneca, OR · Active | Seneca, OR | LLC | Mar 24, 2015 | Active |
| J. C. OLIVER, INC.Seneca, OR · Active | Seneca, OR | Corporation | May 1, 1976 | Active |
| GREAT BASIN DESIGN, LLCSeneca, OR · Active | Seneca, OR | LLC | Feb 16, 2016 | Active |
| SILVIES HIDEOUT AND LINKS LLCSeneca, OR · Active | Seneca, OR | LLC | Jul 19, 2016 | Active |
| SILVIES RETREAT LLCSeneca, OR · Active | Seneca, OR | LLC | Jul 19, 2016 | Active |
| SILVIES CAMP CREEK RANCH LLCSeneca, OR · Active | Seneca, OR | LLC | Jul 20, 2016 | Active |
| SOUTHWORTH BROS., INC.Seneca, OR · Active | Seneca, OR | Corporation | Dec 23, 1977 | Active |
| THE RETREAT & LINKS AT SILVIES VALLEY RANCHSeneca, OR · Active | Seneca, OR | Other | Mar 30, 2017 | Active |
| ROCKING HEART SPASeneca, OR · Active | Seneca, OR | Other | Mar 30, 2018 | Active |
| CROWN CATTLE COMPANYSeneca, OR · Active | Seneca, OR | Other | May 7, 2003 | Active |
| SENECA 96 RANCH LLCSeneca, OR · Active | Seneca, OR | LLC | Apr 12, 2019 | Active |
| BEAR VALLEY 96 RANCH LLCSeneca, OR · Active | Seneca, OR | LLC | Apr 12, 2019 | Active |
| BIG TREE BREWING COMPANY LLCSeneca, OR · Active | Seneca, OR | LLC | Sep 17, 2019 | Active |
| A2 OPERATIONS, INC.Seneca, OR · Active | Seneca, OR | Corporation | Dec 2, 2019 | Active |
| BEAR VALLEY STORESeneca, OR · Active | Seneca, OR | Other | Dec 13, 2019 | Active |
| SWINGING SPADE CUSTOM LEATHER, LLCSeneca, OR · Active | Seneca, OR | LLC | Apr 18, 2023 | Active |
| DABBIN DANK LLCSeneca, OR · Active | Seneca, OR | LLC | Jun 1, 2023 | Active |
| THE RETREAT, LINKS & SPA AT SILVIES VALLEY RANCHSeneca, OR · Active | Seneca, OR | Other | Jun 5, 2023 | Active |
| JOHN DAY DELIVERY LLCSeneca, OR · Active | Seneca, OR | LLC | Oct 27, 2023 | Active |
| SENECA PRESCHOOLSeneca, OR · Active | Seneca, OR | Nonprofit | Jul 29, 2004 | Active |
| MILLIE GOAT, LLCSeneca, OR · Active | Seneca, OR | LLC | Dec 13, 2024 | Active |
| SENECA TIMBERS RV PARKSeneca, OR · Active | Seneca, OR | Other | Mar 17, 2025 | Active |
| LIVESTOCK PROTECTION CONTRACTING & CONSULTING LLCSeneca, OR · Active | Seneca, OR | LLC | Jan 9, 2026 | Active |
| JS PUBLISHINGSeneca, OR · Active | Seneca, OR | Other | Jan 22, 2026 | Active |
| LACEY ELLIOTT LLCSeneca, OR · Active | Seneca, OR | LLC | Mar 5, 2026 | Active |
| 4J RANCHES, LLCSeneca, OR · Active | Seneca, OR | LLC | Dec 30, 2005 | Active |
| WINDY POINT CATTLE COMPANY, INC.Seneca, OR · Active | Seneca, OR | Corporation | Feb 28, 2006 | Active |
| GRANT COUNTY SHOOTING SPORTS CLUB, INC.Seneca, OR · Active | Seneca, OR | Nonprofit | Jul 28, 1993 | Active |
| PETERSON BUSINESS PROMOTIONS, LLCSeneca, OR · Active | Seneca, OR | LLC | Oct 15, 2007 | Active |
| SILVIES VALLEY RANCH, LLCSeneca, OR · Active | Seneca, OR | LLC | Oct 15, 2007 | Active |
| NATURE'S ADVOCATE, LLCSeneca, OR · Active | Seneca, OR | LLC | Oct 15, 2007 | Active |
| SILVIES VALLEY RANCHSeneca, OR · Active | Seneca, OR | Other | Nov 1, 2007 | Active |
| SILVIES VALLEY VETERINARY ASSOCIATESSeneca, OR · Active | Seneca, OR | Other | Nov 1, 2007 | Active |
| NATURE'S ADVOCATESeneca, OR · Active | Seneca, OR | Other | Nov 2, 2007 | Active |
| RANCH HANDS WOOL COMPANYSeneca, OR · Active | Seneca, OR | Other | Nov 9, 2007 | Active |
| FRIENDS OF ST. CHARLES MISSION OF SENECASeneca, OR · Active | Seneca, OR | Nonprofit | Dec 24, 2007 | Active |
| HARNEY ENHANCEMENTS COMPANY LLCSeneca, OR · Active | Seneca, OR | LLC | Feb 20, 2008 | Active |
| OREGON VEGETATION MANAGEMENT ASSOCIATIONSeneca, OR · Active | Seneca, OR | Nonprofit | Jan 16, 1987 | Active |
| C.V.S., INC.Seneca, OR · Active | Seneca, OR | Corporation | Feb 12, 1987 | Active |
| GRANT COUNTY FAMILY HERITAGE FOUNDATIONSeneca, OR · Active | Seneca, OR | Nonprofit | Nov 30, 1999 | Active |
| SENECA INVESTMENTS LLCSeneca, OR · Active | Seneca, OR | LLC | Feb 7, 2011 | Active |
| MELVIN'S FIR STREET MARKET INCSeneca, OR · Active | Seneca, OR | Corporation | May 13, 2011 | Active |
| SCOTTY CREEK CATTLE RANCHSeneca, OR · Active | Seneca, OR | Other | Sep 11, 2012 | Active |
| SENECA ENHANCEMENTS COMPANY LLCSeneca, OR · Active | Seneca, OR | LLC | Mar 19, 2013 | Active |
| LAKE CREEK YOUTH RECREATIONAL CAMP INC.Seneca, OR · Active | Seneca, OR | Nonprofit | Dec 22, 1971 | Active |
| DRC CATTLE CO. LLCSeneca, OR · Active | Seneca, OR | LLC | Aug 20, 2002 | Active |
| DRC LAND CO. LLCSeneca, OR · Active | Seneca, OR | LLC | Aug 20, 2002 | Active |