| 1 | P. F. Abel Refuse Disposal, Inc.Not reported | Corporation | Not reported | Not reported |
| 2 | Ace Printing CompanyNot reported | Corporation | Not reported | Not reported |
| 3 | Kloidt's Flower Shoppe, Inc.Not reported | Corporation | Not reported | Not reported |
| 4 | Adelphia Sales & Service IncNot reported | Corporation | Not reported | Not reported |
| 5 | Children's Developmental Center Corp.Not reported | Corporation | Not reported | Not reported |
| 6 | Ajax Boat ClubNot reported | Nonprofit | Not reported | Not reported |
| 7 | Albright Bros. Inc.Not reported | Corporation | Not reported | Not reported |
| 8 | Allied Fire CompanyNot reported | Nonprofit | Not reported | Not reported |
| 9 | Andy's Markets, Inc.Not reported | Corporation | Not reported | Not reported |
| 10 | The Art Printing Company Inc of LancasterNot reported | Corporation | Not reported | Not reported |
| 11 | Irwin Backer & Co., Inc.Not reported | Corporation | Not reported | Not reported |
| 12 | F K Bartch IncNot reported | Corporation | Not reported | Not reported |
| 13 | Beacon Shoe Manufacturing CorpNot reported | Corporation | Not reported | Not reported |
| 14 | Bearpaw Rod and Gun ClubNot reported | Nonprofit | Not reported | Not reported |
| 15 | Benton Industries IncNot reported | Corporation | Not reported | Not reported |
| 16 | Beulah Land Rod and Gun ClubNot reported | Nonprofit | Not reported | Not reported |
| 17 | Bible Believers FellowshipNot reported | Nonprofit | Not reported | Not reported |
| 18 | Bicentennial Seal, Inc.Not reported | Corporation | Not reported | Not reported |
| 19 | Brosnik Organization, Inc.Not reported | Corporation | Not reported | Not reported |
| 20 | Brubaker Enterprises, Inc.Not reported | Corporation | Not reported | Not reported |
| 21 | C and D Realty Co., Inc.Not reported | Corporation | Not reported | Not reported |
| 22 | Camp Manor FieldNot reported | Nonprofit | Not reported | Not reported |
| 23 | Carlin Steel Company Inc.Not reported | Corporation | Not reported | Not reported |
| 24 | Casa Di Sardi, Inc.Not reported | Corporation | Not reported | Not reported |
| 25 | Central Building AssociationNot reported | Nonprofit | Not reported | Not reported |
| 26 | Civic Progressive Club of Columbia PennsylvaniaNot reported | Nonprofit | Not reported | Not reported |
| 27 | Coastwide Shopping Center Inc.Not reported | Corporation | Not reported | Not reported |
| 28 | Colmar Craftsman ClubNot reported | Nonprofit | Not reported | Not reported |
| 29 | Columbia Aero ClubNot reported | Nonprofit | Not reported | Not reported |
| 30 | Columbia Animal Hospital, Inc.Not reported | Corporation | Not reported | Not reported |
| 31 | Columbia Area Buying Club, IncorporatedNot reported | Nonprofit | Not reported | Not reported |
| 32 | Columbia Downtown Development CorporationNot reported | Nonprofit | Not reported | Not reported |
| 33 | Columbia Area Tourist BureauNot reported | Nonprofit | Not reported | Not reported |
| 34 | Columbia Athletic Association, Inc.Not reported | Corporation | Not reported | Not reported |
| 35 | Columbia Bowl Inc.Not reported | Corporation | Not reported | Not reported |
| 36 | Columbia Boys' Athletic AssociationNot reported | Nonprofit | Not reported | Not reported |
| 37 | Columbia Cable Construction Company Inc.Not reported | Corporation | Not reported | Not reported |
| 38 | Columbia Catholic Housing for the Elderly, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 39 | Columbia Child Day Care Center, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 40 | Columbia Circle ClubNot reported | Nonprofit | Not reported | Not reported |
| 41 | Columbia Construction Company, Inc.Not reported | Corporation | Not reported | Not reported |
| 42 | Columbia Fire Company No 1 Marching ClubNot reported | Nonprofit | Not reported | Not reported |
| 43 | Columbia Fish and Game AssociationNot reported | Nonprofit | Not reported | Not reported |
| 44 | Columbia Fraternal AssociationNot reported | Nonprofit | Not reported | Not reported |
| 45 | Columbia Friendship AssociationNot reported | Nonprofit | Not reported | Not reported |
| 46 | Columbia Garment Company, Inc.Not reported | Corporation | Not reported | Not reported |
| 47 | Lancaster General Health - Columbia CenterNot reported | Nonprofit | Not reported | Not reported |
| 48 | Columbia Hunting AssociationNot reported | Nonprofit | Not reported | Not reported |
| 49 | Columbia Junior Chamber of CommerceNot reported | Nonprofit | Not reported | Not reported |
| 50 | Columbia Malleable Castings CorporationNot reported | Corporation | Not reported | Not reported |