SIC and NAICS code list, free to download, with the crosswalk between them
Every industry code with its full name, in plain CSV and JSON: the 1987 Standard Industrial Classification (SIC), NAICS as published in 2017 and 2022, and a crosswalk from each SIC code to the NAICS 2022 codes that replaced it. Public domain, no sign-up, no email.
The SIC list on OSHA's website cuts long titles off mid-phrase. This one has them whole, and every change is listed.
Released under CC0: use it for anything, no credit needed. The classifications themselves are U.S. government works, in the public domain in the United States. Sources and method.
Look up a code or a word
Type a SIC or NAICS code (1711, 238220) or a word (plumbing, bakery). Each result shows its place in the hierarchy and the codes it lines up with in the other system.
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SIC or NAICS: which one do you need?
| SIC | NAICS | |
|---|---|---|
| Full name | Standard Industrial Classification | North American Industry Classification System |
| Code shape | 2 digits (major group), 3 (industry group), 4 (industry) | 2 to 6 digits: sector, subsector, industry group, NAICS industry, national industry |
| Created | The late 1930s, for U.S. federal statistics | Adopted by the U.S. in 1997 with Canada and Mexico |
| Last revision | 1987, and no later | 2022; a 2027 revision is proposed |
| Still seen in | Some agencies' records, such as SEC filings | Current government statistics and most newer systems |
| Use it when | The source you hold is tagged with SIC | You want the current system, or finer detail |
The two do not line up one to one. At the finest level each lists about a thousand industries, but the boundaries differ: some SIC industries split across several NAICS codes while others merge. That is why the crosswalk below lists pairs, not a single answer per code.
A short history of SIC and NAICS
- Mid-1930s. The Central Statistical Board creates the Interdepartmental Committee on Industrial Classification to give federal agencies one way to classify industries.
- 1938 to 1939. The committee approves a list of manufacturing industries in 1938 and completes the system in 1939, naming it the Standard Industrial Classification.
- 1945 and 1949. The manufacturing list is revised after World War II; the non-manufacturing list is updated in 1949.
- 1957 to 1987. Manufacturing and non-manufacturing are combined in one manual in 1957 and updated regularly through 1987, the last SIC revision.
- Early 1990s. Weaknesses in SIC show, and the North American Free Trade Agreement makes a shared system with Canada and Mexico worth building. The Office of Management and Budget convenes the Economic Classification Policy Committee, which works with Statistics Canada and Mexico's INEGI.
- 1997. The Office of Management and Budget adopts NAICS, first used in that year's economic census, and recognizes hundreds of new industries.
- 2002, 2007, 2012, 2017, 2022. NAICS is revised every five years. The Census Bureau publishes a concordance between each edition and the next, which is how the crosswalk below is built.
- 2027. In July 2026 the Office of Management and Budget asked for public comment on proposed changes, which would apply to establishment data for periods beginning on or after January 1, 2027. The final changes are still to be published; this page and the files will be updated when they are.
Sources: the Census Bureau's history of classifying businesses; the Federal Register notice of July 13, 2026 (docket USBC-2026-0133). Links under Sources and method.
What the codes are used for
- Government statistics. The Census Bureau has used NAICS since the 1997 economic census, and publishes its industry statistics by NAICS code.
- Securities filings. The SIC code in a company's EDGAR filings indicates its type of business, and the SEC's Division of Corporation Finance uses it to assign review of the filings.
- Workplace safety. OSHA still publishes the 1987 SIC manual on its website.
- Sizing a market. A code lets you ask how many businesses do a given kind of work, and in which places, using the same words as the statistics.
- Filtering a list. Any list of businesses tagged with a code can be cut to the industries you serve. A contractor-insurance seller starts from the construction codes; a payments seller from restaurants and retail.
- Joining data. When one source uses SIC and another NAICS, the crosswalk is how you line them up.
Three habits that save trouble
- Choose the depth on purpose. Two digits size a whole field; four-digit SIC or six-digit NAICS names a trade. A list tagged to four digits still rolls up to two by taking the first two digits (in NAICS, manufacturing, retail and transportation each span two or three two-digit prefixes: 31-33, 44-45, 48-49).
- Stay in one edition. A code can be renamed, split or retired between editions. Check which edition a source uses before you join anything; the NAICS file shows which codes changed.
- Expect gaps for new businesses. A business that has just formed may not yet carry a code in any database, or carries a broad one. Plan for a share of records with no code rather than treating them as errors.
The SIC to NAICS crosswalk
The Census Bureau publishes official concordances: one from SIC 1987 to NAICS 2002, and one for each NAICS revision to the next (2002 to 2007, 2007 to 2012, 2012 to 2017, 2017 to 2022). We chained them to bring every SIC code forward to NAICS 2022. The result lists 2,366 pairs. Every SIC industry except the "nonclassifiable" code has at least one.
Each pair carries a one_to_one flag. It is true when the code stayed a single code through every step (1,301 of the pairs), and false when a split or a merge happened somewhere along the way, so treat those as candidates rather than answers. If you need the unchained official table, the original SIC 1987 to NAICS 2002 concordance is in the ZIP as published.
Try it: SIC 1711, Plumbing, Heating and Air-Conditioning, or restaurants.
Why we compiled the names again
The SIC list on OSHA's website is where most online copies come from, and it cuts long titles off mid-phrase: industry group 608 reads "Foreign Banking And Branches And Agencies Of". We restored 64 names that its list cuts off or leaves out, from the printed 1987 manual and corrected 27 more that differ from it, such as "Ecept Precious Metal" for group 396. Each one is in the corrections file, with OSHA's original text beside ours. Found one we got wrong? Tell us with the code and what the manual shows.
The top level of each list
All 83 SIC major groups
- 01 Agricultural Production-Crops
- 02 Agriculture Production Livestock And Animal Specialties
- 07 Agricultural Services
- 08 Forestry
- 09 Fishing, Hunting, And Trapping
- 10 Metal Mining
- 12 Coal Mining
- 13 Oil And Gas Extraction
- 14 Mining And Quarrying Of Nonmetallic Minerals, Except Fuels
- 15 Building Construction-General Contractors And Operative Builders
- 16 Heavy Construction Other Than Building Construction-Contractors
- 17 Construction-Special Trade Contractors
- 20 Food And Kindred Products
- 21 Tobacco Products
- 22 Textile Mill Products
- 23 Apparel And Other Finished Products Made From Fabrics And Similar Materials
- 24 Lumber And Wood Products, Except Furniture
- 25 Furniture And Fixtures
- 26 Paper And Allied Products
- 27 Printing, Publishing, And Allied Industries
- 28 Chemicals And Allied Products
- 29 Petroleum Refining And Related Industries
- 30 Rubber And Miscellaneous Plastics Products
- 31 Leather And Leather Products
- 32 Stone, Clay, Glass, And Concrete Products
- 33 Primary Metal Industries
- 34 Fabricated Metal Products, Except Machinery And Transportation Equipment
- 35 Industrial And Commercial Machinery And Computer Equipment
- 36 Electronic And Other Electrical Equipment And Components, Except Computer Equipment
- 37 Transportation Equipment
- 38 Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks
- 39 Miscellaneous Manufacturing Industries
- 40 Railroad Transportation
- 41 Local And Suburban Transit And Interurban Highway Passenger Transportation
- 42 Motor Freight Transportation And Warehousing
- 43 United States Postal Service
- 44 Water Transportation
- 45 Transportation By Air
- 46 Pipelines, Except Natural Gas
- 47 Transportation Services
- 48 Communications
- 49 Electric, Gas, And Sanitary Services
- 50 Wholesale Trade-durable Goods
- 51 Wholesale Trade-nondurable Goods
- 52 Building Materials, Hardware, Garden Supply, And Mobile Home Dealers
- 53 General Merchandise Stores
- 54 Food Stores
- 55 Automotive Dealers And Gasoline Service Stations
- 56 Apparel And Accessory Stores
- 57 Home Furniture, Furnishings, And Equipment Stores
- 58 Eating And Drinking Places
- 59 Miscellaneous Retail
- 60 Depository Institutions
- 61 Nondepository Credit Institutions
- 62 Security And Commodity Brokers, Dealers, Exchanges, And Services
- 63 Insurance Carriers
- 64 Insurance Agents, Brokers, And Service
- 65 Real Estate
- 67 Holding And Other Investment Offices
- 70 Hotels, Rooming Houses, Camps, And Other Lodging Places
- 72 Personal Services
- 73 Business Services
- 75 Automotive Repair, Services, And Parking
- 76 Miscellaneous Repair Services
- 78 Motion Pictures
- 79 Amusement And Recreation Services
- 80 Health Services
- 81 Legal Services
- 82 Educational Services
- 83 Social Services
- 84 Museums, Art Galleries, And Botanical And Zoological Gardens
- 86 Membership Organizations
- 87 Engineering, Accounting, Research, Management, And Related Services
- 88 Private Households
- 89 Miscellaneous Services
- 91 Executive, Legislative, And General Government, Except Finance
- 92 Justice, Public Order, And Safety
- 93 Public Finance, Taxation, And Monetary Policy
- 94 Administration Of Human Resource Programs
- 95 Administration Of Environmental Quality And Housing Programs
- 96 Administration Of Economic Programs
- 97 National Security And International Affairs
- 99 Nonclassifiable Establishments
All 20 NAICS sectors (2022 names)
- 11 Agriculture, Forestry, Fishing and Hunting
- 21 Mining, Quarrying, and Oil and Gas Extraction
- 22 Utilities
- 23 Construction
- 31-33 Manufacturing
- 42 Wholesale Trade
- 44-45 Retail Trade
- 48-49 Transportation and Warehousing
- 51 Information
- 52 Finance and Insurance
- 53 Real Estate and Rental and Leasing
- 54 Professional, Scientific, and Technical Services
- 55 Management of Companies and Enterprises
- 56 Administrative and Support and Waste Management and Remediation Services
- 61 Educational Services
- 62 Health Care and Social Assistance
- 71 Arts, Entertainment, and Recreation
- 72 Accommodation and Food Services
- 81 Other Services (except Public Administration)
- 92 Public Administration
Sources and method
- SIC names: the 1987 Standard Industrial Classification Manual (Office of Management and Budget), checked against OSHA's published list.
- NAICS names: the U.S. Census Bureau's 2-6 digit code files for 2017 and 2022, which the NAICS file matches code for code.
- Crosswalk: the Census Bureau's SIC to NAICS and NAICS to NAICS concordances, chained forward as described above.
- History: the Census Bureau's account of classifying businesses and OMB's July 13, 2026 request for comments on NAICS 2027.
- SEC use of SIC codes: the SEC's SIC code list.
- Everything is validated by a script that checks counts, parent links, cut-off names and the crosswalk; the script and the tests are in the ZIP.
If you sell to newly formed businesses
GoodLeads provides the owner of a newly formed U.S. business, by name and mailing address and a verified phone or email where we find one, the morning after the state posts the filing. Records carry SIC and NAICS codes once we have classified them, so a code from this page turns into a free count: give any code, get the equivalents in the other systems and a live count, then price a list before you pay.