Ranked by number of establishments (Census County Business Patterns, 2023).
| # | Industry | Establishments |
|---|
| 1 | Health Care & Social Assistance | 1,003,398 |
| 2 | Professional, Scientific & Technical Services | 989,182 |
| 3 | Construction (all) | 814,557 |
| 4 | Other Services (except Public Administration) | 807,804 |
| 5 | Accommodation & Food Services | 784,882 |
| 6 | Ambulatory Health Care Services | 701,862 |
| 7 | Specialty Trade Contractors | 521,315 |
| 8 | Real Estate & Rental and Leasing | 469,562 |
| 9 | Finance & Insurance | 469,382 |
| 10 | Administrative & Support & Waste Services | 451,014 |
| 11 | Administrative & Support Services | 421,777 |
| 12 | Real Estate | 414,824 |
| 13 | Wholesale Trade | 382,081 |
| 14 | Religious, Grantmaking, Civic & Professional Orgs | 309,008 |
| 15 | Personal & Laundry Services | 272,787 |
| 16 | Full-Service Restaurants | 258,626 |
| 17 | Full-Service Restaurants | 257,282 |
| 18 | Full-Service Restaurants | 254,873 |
| 19 | Construction of Buildings | 254,630 |
| 20 | Full-Service Restaurants | 250,186 |
| 21 | Full-Service Restaurants | 249,975 |
| 22 | Merchant Wholesalers, Durable Goods | 225,021 |
| 23 | Social Assistance | 199,242 |
| 24 | Legal Services | 181,092 |
| 25 | Credit Intermediation & Related Activities | 176,966 |
| 26 | Truck Transportation | 170,286 |
| 27 | Automotive Repair & Maintenance | 169,572 |
| 28 | Arts, Entertainment & Recreation | 166,356 |
| 29 | Offices of Real Estate Agents & Brokers | 165,585 |
| 30 | Offices of Real Estate Agents & Brokers | 163,894 |
| 31 | Information | 160,704 |
| 32 | Food & Beverage Retailers | 160,298 |
| 33 | Offices of Real Estate Agents & Brokers | 158,902 |
| 34 | Offices of Real Estate Agents & Brokers | 146,621 |
| 35 | Computer Systems Design Services | 145,813 |
| 36 | Accounting, Tax Prep & Bookkeeping Services | 139,959 |
| 37 | Accounting, Tax Prep & Bookkeeping Services | 137,766 |
| 38 | Accounting, Tax Prep & Bookkeeping Services | 137,069 |
| 39 | Offices of Real Estate Agents & Brokers | 136,512 |
| 40 | Offices of Dentists | 136,422 |
| 41 | Offices of Dentists | 136,140 |
| 42 | Accounting, Tax Prep & Bookkeeping Services | 135,960 |
| 43 | Insurance Agencies & Brokerages | 135,939 |
| 44 | Offices of Dentists | 135,665 |
| 45 | Offices of Dentists | 135,354 |
| 46 | Offices of Dentists | 135,333 |
| 47 | Insurance Agencies & Brokerages | 135,100 |
| 48 | Insurance Agencies & Brokerages | 135,077 |
| 49 | Insurance Agencies & Brokerages | 134,902 |
| 50 | Accounting, Tax Prep & Bookkeeping Services | 134,491 |
| 51 | Insurance Agencies & Brokerages | 133,728 |
| 52 | Clothing & Accessories Stores | 122,162 |
| 53 | Merchant Wholesalers, Nondurable Goods | 122,098 |
| 54 | Motor Vehicle & Parts Dealers | 119,780 |
| 55 | Educational Services | 118,004 |
| 56 | Landscaping Services | 117,969 |
| 57 | Architectural, Engineering & Related Services | 117,417 |
| 58 | Landscaping Services | 117,109 |
| 59 | Miscellaneous Store Retailers | 116,482 |
| 60 | Landscaping Services | 115,196 |
| 61 | Securities, Commodity Contracts & Investments | 113,885 |
| 62 | Plumbing, Heating & Air-Conditioning Contractors | 111,207 |
| 63 | Plumbing, Heating & Air-Conditioning Contractors | 109,601 |
| 64 | Landscaping Services | 109,224 |
| 65 | Gasoline Stations | 109,174 |
| 66 | Landscaping Services | 108,024 |
| 67 | Plumbing, Heating & Air-Conditioning Contractors | 106,854 |
| 68 | Plumbing, Heating & Air-Conditioning Contractors | 104,367 |
| 69 | Plumbing, Heating & Air-Conditioning Contractors | 103,359 |
| 70 | Nursing & Residential Care Facilities | 94,771 |
| 71 | Amusement, Gambling & Recreation | 89,540 |
| 72 | Health & Personal Care Stores | 89,276 |
| 73 | General Automotive Repair | 84,859 |
| 74 | Beauty Salons | 84,176 |
| 75 | General Automotive Repair | 84,101 |
| 76 | General Automotive Repair | 83,027 |
| 77 | Beauty Salons | 82,964 |
| 78 | Other Professional, Scientific & Technical Services | 82,894 |
| 79 | General Automotive Repair | 82,292 |
| 80 | Child Day Care Services | 82,162 |
| 81 | General Automotive Repair | 81,617 |
| 82 | Child Day Care Services | 80,120 |
| 83 | Beauty Salons | 79,472 |
| 84 | Beauty Salons | 79,413 |
| 85 | Beauty Salons | 78,669 |
| 86 | Child Day Care Services | 77,713 |
| 87 | Child Day Care Services | 77,629 |
| 88 | Child Day Care Services | 77,383 |
| 89 | Building Material & Garden Equipment Dealers | 72,618 |
| 90 | Accommodation | 70,350 |
| 91 | Performing Arts & Spectator Sports | 68,638 |
| 92 | Janitorial Services | 67,799 |
| 93 | Janitorial Services | 67,295 |
| 94 | Janitorial Services | 66,471 |
| 95 | Janitorial Services | 63,678 |
| 96 | Janitorial Services | 62,592 |
| 97 | New Single-Family Housing Construction | 60,635 |
| 98 | New Single-Family Housing Construction | 59,568 |
| 99 | General Merchandise Stores | 59,516 |
| 100 | New Single-Family Housing Construction | 58,031 |
| 101 | New Single-Family Housing Construction | 55,868 |
| 102 | New Single-Family Housing Construction | 54,735 |
| 103 | Fabricated Metal Product Mfg | 53,790 |
| 104 | Rental & Leasing Services | 52,037 |
| 105 | Support Activities for Transportation | 49,494 |
| 106 | Furniture & Home Furnishings Stores | 44,942 |
| 107 | Sporting Goods, Hobby, Book & Music Stores | 42,352 |
| 108 | Fitness & Recreational Sports Centers | 41,556 |
| 109 | Fitness & Recreational Sports Centers | 40,786 |
| 110 | Fitness & Recreational Sports Centers | 39,562 |
| 111 | Fitness & Recreational Sports Centers | 39,359 |
| 112 | Fitness & Recreational Sports Centers | 39,297 |
| 113 | Heavy & Civil Engineering Construction | 38,612 |
| 114 | Specialized Design Services | 37,685 |
| 115 | Veterinary Services | 34,296 |
| 116 | Veterinary Services | 34,000 |
| 117 | Tax Preparation Services | 33,293 |
| 118 | Veterinary Services | 32,634 |
| 119 | Publishing Industries | 32,332 |
| 120 | Tax Preparation Services | 32,278 |
| 121 | Veterinary Services | 32,125 |
| 122 | Veterinary Services | 32,110 |
| 123 | Food Manufacturing | 31,130 |
| 124 | Tax Preparation Services | 30,886 |
| 125 | Motion Picture & Sound Recording | 30,226 |
| 126 | Waste Management & Remediation Services | 29,237 |
| 127 | Tax Preparation Services | 28,762 |
| 128 | Tax Preparation Services | 28,386 |
| 129 | Miscellaneous Manufacturing | 23,626 |
| 130 | Mining, Quarrying, and Oil & Gas Extraction | 23,360 |
| 131 | Printing & Related Support | 22,301 |
| 132 | Machinery Manufacturing | 21,668 |
| 133 | Warehousing & Storage | 21,521 |
| 134 | Utilities | 20,379 |
| 135 | Electronics & Appliance Stores | 19,048 |
| 136 | Data Processing, Hosting & Related Services | 18,544 |
| 137 | Couriers & Messengers | 16,226 |
| 138 | Nonmetallic Mineral Product Mfg | 15,317 |
| 139 | Chemical Manufacturing | 14,543 |
| 140 | Furniture & Related Product Mfg | 14,378 |
| 141 | Wood Product Manufacturing | 13,900 |
| 142 | Other Information Services | 13,402 |
| 143 | Support Activities for Mining | 12,034 |
| 144 | Transportation Equipment Mfg | 11,691 |
| 145 | Computer & Electronic Product Mfg | 11,262 |
| 146 | Hospitals | 7,523 |
| 147 | Mining (except Oil & Gas) | 6,121 |
| 148 | Electrical Equipment & Appliance Mfg | 5,398 |
| 149 | Oil & Gas Extraction | 5,205 |
| 150 | Primary Metal Manufacturing | 3,570 |
| 151 | Pipeline Transportation | 3,517 |
| 152 | Lessors of Nonfinancial Intangible Assets | 2,701 |
| 153 | Funds, Trusts & Other Financial Vehicles | 2,006 |
| 154 | Water Transportation | 1,790 |