| C.L.P. PIZZA, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Apr 28, 1987 | Active |
| LANDSCAPE ADVENTURE CORP.Riverhead, NY · Active | Riverhead, NY | Corporation | Mar 27, 1987 | Active |
| WALTER MICHALOWSKI PLUMBING & HEATING, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Mar 19, 1987 | Active |
| RIVERHEAD FINANCIAL AND MANAGEMENT SERVICES, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Mar 17, 1987 | Active |
| RICHARD E. GADZINSKI, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Feb 2, 1987 | Active |
| CONSTRUCTIVE FRAMING, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Jan 7, 1987 | Active |
| RVFCO. INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Nov 20, 1986 | Active |
| PEACHES UNLIMITED INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Oct 8, 1986 | Active |
| NINOW'S MUSIC STORE, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Jun 4, 1986 | Active |
| R & K PRECISION AUTOWORKS INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Feb 27, 1986 | Active |
| R & T BACH CO. INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Dec 10, 1985 | Active |
| HEPPNER & MCLAUGHLIN REALTY CO., INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Oct 30, 1985 | Active |
| MCLAUGHLIN HEPPNER FUNERAL HOME OF RIVERHEAD, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Oct 30, 1985 | Active |
| AQUEBOGUE CORP.Riverhead, NY · Active | Riverhead, NY | Corporation | Oct 17, 1985 | Active |
| COUNTRY LIMOUSINE SERVICE, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Feb 26, 1985 | Active |
| RIVERHEAD MANAGEMENT CO., INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Dec 28, 1984 | Active |
| KANDELL, FARNWORTH & PUBINS, CPA'S, P.C.Riverhead, NY · Active | Riverhead, NY | Corporation | Oct 19, 1984 | Active |
| VERANRAY CORP.Riverhead, NY · Active | Riverhead, NY | Corporation | Jul 2, 1984 | Active |
| G & C HAULING CO., INC.Riverhead, NY · Active | Riverhead, NY | Corporation | May 25, 1984 | Active |
| IN SHORE CONSTRUCTION CO., INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Mar 16, 1984 | Active |
| F.T.H., INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Jan 26, 1984 | Active |
| 1181 EAST MAIN ST., CORP.Riverhead, NY · Active | Riverhead, NY | Corporation | Mar 2, 1983 | Active |
| DECORATIVE CARPENTRY, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | May 5, 1982 | Active |
| HASTINGS & WITSCHI M.D., P.C.Riverhead, NY · Active | Riverhead, NY | Corporation | Nov 9, 1981 | Active |
| DUNKIRK TRUCKING SERVICE, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Jun 23, 1981 | Active |
| ANTHONY B. TOHILL, P.C.Riverhead, NY · Active | Riverhead, NY | Corporation | Jan 8, 1981 | Active |
| JOHNNY'S TV REPAIR OF RIVERHEAD, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Sep 7, 1978 | Active |
| LAKESIDE TRAILER COURT, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Aug 18, 1976 | Active |
| SOUND AVENUE EQUIPMENT COMPANY, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Feb 13, 1976 | Active |
| PODLAS CONSTRUCTION, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Dec 22, 1975 | Active |
| JCA OPTICAL, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Jun 30, 1975 | Active |
| LAKE SHORE ABSTRACT, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Mar 28, 1996 | Active |
| RTE 58 ENTERPRISE INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Nov 8, 2007 | Active |
| JOCOM REALTY CORP.Riverhead, NY · Active | Riverhead, NY | Corporation | Feb 1, 2002 | Active |
| WAYNE'S PRINTING EMPORIUM INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Dec 17, 1979 | Active |
| WORLD ETHNIC ARTS & ENTERTAINMENT, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | May 7, 1985 | Active |
| EAST COAST AUTOMOTIVE TOYS, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Dec 14, 1999 | Active |
| THOMAS ANDREWS PROPERTY MANAGEMENT INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Dec 14, 2012 | Active |
| NICOLE ANDREWS, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Apr 25, 2012 | Active |
| JEFF A. ZAHN ARCHITECT, P.C.Riverhead, NY · Active | Riverhead, NY | Corporation | Feb 17, 2005 | Active |
| BAITS & BARRELS INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Jun 16, 2015 | Active |
| CLP RESTAURANT INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Apr 29, 2011 | Active |
| A M WASHING AND LAUNDRY, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | May 26, 2004 | Active |
| 631 PROPANE INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Nov 12, 2014 | Active |
| SOUTHOLD MEDICAL ARTS BUILDING, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Mar 31, 2006 | Active |
| THE BAGEL PEOPLE, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Jul 16, 1997 | Active |
| EASTERN SUFFOLK NEPHROLOGY, P.C.Riverhead, NY · Active | Riverhead, NY | Corporation | Nov 13, 1997 | Active |
| DEXTER ARCHER, D.V.M., P.C.Riverhead, NY · Active | Riverhead, NY | Corporation | Dec 7, 2000 | Active |
| HARTILL CONSTRUCTION, INC.Riverhead, NY · Active | Riverhead, NY | Corporation | Oct 25, 2004 | Active |
| SCHEMBRI DEVELOPMENT CORP.Riverhead, NY · Active | Riverhead, NY | Corporation | Jun 23, 2004 | Active |