| 601 | Women Making Music, Inc.Active | Nonprofit | Aug 29, 1994 | Active |
| 602 | Rongey Family L.p.Active | Partnership | May 6, 1994 | Active |
| 603 | The Walker Lake AssociationActive | Nonprofit | Mar 30, 1994 | Active |
| 604 | Willits Eaa Chapter 1027, Inc.Active | Nonprofit | Oct 19, 1993 | Active |
| 605 | Willits Community Television, Inc.Active | Nonprofit | Oct 12, 1993 | Active |
| 606 | Renewable Energy Development InstituteActive | Nonprofit | Aug 25, 1993 | Active |
| 607 | Willits Police Officer's AssociationActive | Nonprofit | Jun 29, 1993 | Active |
| 608 | Willits True Value Lumber And Hardware, A Limited PartnershipActive | Partnership | Dec 29, 1992 | Active |
| 609 | Caicos Investments, Inc.Active | Corporation | Aug 11, 1992 | Active |
| 610 | Agape Bible Church Of WillitsActive | Nonprofit | Aug 4, 1992 | Active |
| 611 | Coastal Forestlands, Inc.Active | Corporation | Jul 1, 1992 | Active |
| 612 | Coastal Forestlands, Ltd., A California Limited PartnershipActive | Partnership | Jul 1, 1992 | Active |
| 613 | T.b.m. Properties, A California Limited PartnershipActive | Partnership | Dec 26, 1991 | Active |
| 614 | Willits Environmental CenterActive | Nonprofit | Oct 9, 1990 | Active |
| 615 | Northern Aggregates, Inc.Active | Corporation | Apr 27, 1990 | Active |
| 616 | Friends Of Sherwood SchoolActive | Nonprofit | Jul 11, 1988 | Active |
| 617 | Friends Of The Willits Library, Inc.Active | Nonprofit | Oct 23, 1987 | Active |
| 618 | Willits Redwood Company, Inc.Active | Corporation | May 13, 1987 | Active |
| 619 | Rtl Construction & Rentals, Inc.Active | Corporation | Apr 24, 1987 | Active |
| 620 | Ponderosa And Sun Realty, Inc.Active | Corporation | Jan 12, 1987 | Active |
| 621 | Sp & M Investments, Inc.Active | Corporation | Oct 3, 1986 | Active |
| 622 | Willits Hospital, Inc.Active | Nonprofit | Oct 1, 1986 | Active |
| 623 | Waters Construction, Inc.Active | Corporation | Jun 25, 1986 | Active |
| 624 | Semper Innovare, Inc.Active | Corporation | Jan 3, 1986 | Active |
| 625 | Brooktrails Lodge-motel Complex Ltd., A California Limited PartnershipActive | Partnership | Nov 25, 1985 | Active |
| 626 | Indigenous Community InitiativesActive | Nonprofit | Nov 14, 1985 | Active |
| 627 | Cave Investments, Inc.Active | Corporation | Oct 4, 1985 | Active |
| 628 | Sound Sense, A California Limited PartnershipActive | Partnership | Jun 19, 1985 | Active |
| 629 | Advanced Industrial GroupActive | Partnership | Jun 13, 1985 | Active |
| 630 | Harwood Investment CompanyActive | Partnership | May 28, 1985 | Active |
| 631 | Roots Of Motive Power, Inc.Active | Nonprofit | May 22, 1985 | Active |
| 632 | Extermagon, Inc.Active | Corporation | May 8, 1985 | Active |
| 633 | Stevens Sherwood Ranch, A California Limited PartnershipActive | Partnership | Feb 19, 1985 | Active |
| 634 | Willits Community Services CorporationActive | Nonprofit | Dec 29, 1984 | Active |
| 635 | City Of Willits Public Facilities CorporationActive | Nonprofit | Feb 6, 1984 | Active |
| 636 | Bemcore Enterprises, Inc.Active | Corporation | Jun 29, 1983 | Active |
| 637 | Mendocino Construction Services, Inc.Active | Corporation | Apr 7, 1983 | Active |
| 638 | North Coast Drivers, Inc.Active | Nonprofit | Feb 3, 1982 | Active |
| 639 | Harrah Industries, Inc.Active | Corporation | Apr 7, 1980 | Active |
| 640 | Willits Redwood Little League, Inc.Active | Nonprofit | Mar 31, 1980 | Active |
| 641 | William W. Bowen, M.d., Inc.Active | Corporation | Nov 8, 1979 | Active |
| 642 | Willits Community Theatre And Performing Arts Center, Inc.Active | Nonprofit | Mar 22, 1979 | Active |
| 643 | Soroptimist International Of Willits, California, Soroptimist International Of The Americas, Inc.Active | Nonprofit | Oct 3, 1977 | Active |
| 644 | Lakeport Mortuary, Inc.Active | Corporation | Sep 29, 1977 | Active |
| 645 | Spring Creek Road AssociationActive | Nonprofit | Aug 23, 1977 | Active |
| 646 | Advanced Manufacturing And Development, Inc.Active | Corporation | Dec 16, 1976 | Active |
| 647 | Willits Post No. 174, The American Legion, Department Of CaliforniaActive | Nonprofit | May 26, 1976 | Active |
| 648 | Willowbrook-skyview Road AssociationActive | Nonprofit | Jul 31, 1975 | Active |
| 649 | Don Pedro Ranch CorporationActive | Corporation | Jul 1, 1975 | Active |
| 650 | Sherwood Ranch Property Owners' AssociationActive | Nonprofit | May 22, 1975 | Active |