| Floor # | Companies | Business |
| 110 |
Outdoor Observatory | Tourism |
| 109 |
Mechanical floor | |
| 108 |
Mechanical floor | |
| 107 |
Showtime Pictures, Indoor Observatory with Food court which included Nathan's Famous Hot Dogs and Sbarro Pizzeria | Business services, Tourism, Food |
| 106 |
Atlantic Bank of New York | Banks/Financial |
| 105 |
AON Corporation | Insurance |
| 104 |
AON Corporation, Sandler O'Neill and Partners | Insurance, Investment |
| 103 |
AON Corporation | Insurance |
| 102 |
AON Corporation | Insurance |
| 101 |
AON Corporation | Insurance |
| 100 |
AON Corporation | Insurance |
| 99 |
AON Corporation | Insurance |
| 98 |
AON Corporation | Insurance |
| 97 |
Fiduciary Trust Company International | Banks/Financial |
| 96 |
Fiduciary Trust Company International | Banks/Financial |
| 95 |
Fiduciary Trust Company International | Banks/Financial |
| 94 |
Fiduciary Trust Company International | Banks/Financial |
| 93 |
Regus Business Centers | Facility management |
| 92 |
AON Corporation | Insurance |
| 91 |
Gibbs and Hill, Raytheon Company, Washington Group International, | Engineers, Manufacturing |
| 90 |
Fiduciary Trust Company International | Banks/Financial |
| 89 |
Keefe, Bruyette & Woods | Investment |
| 88 |
Keefe, Bruyette & Woods | Investment |
| 87 |
Corporation Service Company, New York State Department of Taxation and Finance | Legal Services, Government |
| 86 |
New York State Department of Taxation and Finance | Government |
| 85 |
Harris Beach, Keefe, Bruyette & Woods | Attorneys, Investment |
| 84 |
EuroBrokers | Financial |
| 83 |
IQ Financial Systems, Chuo Mitsui Trust & Banking | Financial, Financial |
| 82 |
Fuji Bank | Banks/Financial |
| 81 |
Fuji Bank | Banks/Financial |
| 80 |
Fuji Bank | Banks/Financial |
| 79 |
Fuji Bank | Banks/Financial |
| 78 |
Skylobby, First Commercial Bank, Baseline Financial Services | Banks/Financial, Financial |
| 77 |
Baseline Financial Services | Financial |
| 76 |
Mechanical floor | |
| 75 |
Mechanical floor | |
| 74 |
Morgan Stanley | Investment |
| 73 |
Morgan Stanley | Investment |
| 72 |
Morgan Stanley | Investment |
| 71 |
Morgan Stanley | Investment |
| 70 |
Morgan Stanley | Investment |
| 69 |
Morgan Stanley | Investment |
| 68 |
Morgan Stanley | Investment |
| 67 |
Morgan Stanley | Investment |
| 66 |
Morgan Stanley | Investment |
| 65 |
Morgan Stanley | Investment |
| 64 |
Morgan Stanley | Investment |
| 63 |
Morgan Stanley | Investment |
| 62 |
Morgan Stanley | Investment |
| 61 |
Morgan Stanley | Investment |
| 60 |
Morgan Stanley | Investment |
| 59 |
Morgan Stanley | Investment |
| 58 |
Bridge Information Systems | Financial Information Provider |
| 57 |
Bridge Information Systems | Financial Information Provider |
| 56 |
Morgan Stanley | Investment |
| 55 |
Guy Carpenter, Garban Intercapital | Reinsurance, Investment |
| 54 |
Guy Carpenter | Reinsurance |
| 53 |
Guy Carpenter | Reinsurance |
| 52 |
Guy Carpenter | Reinsurance |
| 51 |
Guy Carpenter | Reinsurance |
| 50 |
Guy Carpenter | Reinsurance |
| 49 |
Guy Carpenter, Seabury & Smith | Reinsurance, Insurance |
| 48 |
Fireman's Fund Insurance Company, Guy Carpenter | Insurance, Reinsurance |
| 47 |
Guy Carpenter | Reinsurance |
| 46 |
Morgan Stanley | Investment |
| 45 |
Morgan Stanley | Investment |
| 44 |
Skylobby, Morgan Stanley | Investment |
| 43 |
Morgan Stanley | Investment |
| 42 |
Mechanical floor | |
| 41 |
Mechanical floor | |
| 40 |
Sitailong International USA, Thacher Proffitt & Wood, LLP | Not available, Attorneys |
| 39 |
Thacher Proffitt & Wood, LLP | Attorneys |
| 38 |
Thacher Proffitt & Wood, LLP | Attorneys |
| 37 |
— | — |
| 36 |
Frenkel and Company | Insurance |
| 35 |
ABN AMRO, Frenkel and Company | Mortgage brokers, Insurance |
| 34 |
Oppenheimer Funds | Investment |
| 33 |
Oppenheimer Funds | Investment |
| 32 |
Oppenheimer Funds | Investment |
| 31 |
Oppenheimer Funds | Investment |
| 30 |
Hartford Steam Boiler, New York Stock Exchange | Insurance, Financial |
| 29 |
Weatherly Securities Corp., New York Stock Exchange | Investment, Financial |
| 28 |
Big A Travel Agency, Hua Nan Commercial Bank Ltd., Law Office of Joseph Bellard, New York Stock Exchange | Travel, Banks/Financial, Attorneys, Financial |
| 27 |
— | — |
| 26 |
Sun Microsystems | Computer services |
| 25 |
Sun Microsystems | Computer services |
| 24 |
Allstate Insurance Company, China Chamber of Commerce, December First Productions, Globe Tour and Travel, SCOR U.S. Corporation, Sinolion, TD Waterhouse Group | Insurance, Organizations, Not available, Travel, Insurance, Not available, Investment |
| 23 |
SCOR U.S. Corporation, Unistrat Corporation of America | Insurance, Consultants |
| 22 |
Antal International, Mancini Duffy, Sinochem American Holdings, Washington Mutual | Employment agency, Architects, Investment, Banks/Financial |
| 21 |
Adecco SA, Career Engine, Charoen Pokphand USA, Mancini Duffy | Employment agency, Research, Transport/Utility, Architects |
| 20 |
Thacher Proffitt & Wood, LLP, New York Shipping Association | Attorneys, Transportation |
| 19 |
New York Shipping Association, Waterfront Commission of New York Harbor | Transportation, |
| 18 |
Alliance Consulting, Caserta and Company, Chen, Lin, Li, and Jiang, Intera Group, Pines Investment, Professional Assistance and Consulting, Showtime Pictures, Weiland International, Abad, Castilla and Mallonga | Consultants, Not available, Investment, Employment agency, Investment, Consultants, Showtime Pictures, Investment, Attorneys |
| 17 |
New York Institute of Finance | Consultants |
| 16 |
National Development and Research Institute | Research |
| 15 |
Candia Shipping, James T. Ratner, Law Office of, John J. McMullen & Associates, John W. Loofbourrow Associates, Mancini Duffy, Orient International | Wholesalers, Attorneys, Engineers, Investment, Architects, Not available |
| 14 |
Charna Chemicals, Paging Network of New York, Patinka International (USA), Union Bank of California International | Manufacturing, Telecommunication, Business services, Banks/Financial |
| 13 |
— | — |
| 12 |
EuroBrokers, Verizon Communications | Investment, Telecommunication |
| 11 |
Verizon Communications | Telecommunication |
| 10 |
Verizon Communications | Telecommunication |
| 9 |
Verizon Communications | Telecommunication |
| 8 |
Mechanical floor | |
| 7 |
Mechanical floor | |
| 6 |
— | — |
| 5 |
— | — |
| 4 |
— | — |
| 3 |
— | — |
| 2 |
— | — |
| 1 |
Colortek Kodak Imaging Center | Business services |
| L |
Nichols Foundation | Government/Schools |
| C |
Johnston and Murphy | Not available |
| B |
Xerox Document Company | Manufacturing |
| NA |
Continental Insurance Company | Insurance |
| SOURCES: CoStar Group Inc.; Skyscrapers, An Architectural Type of Modern Urbanism; compiled from AP wire reports. |