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Dun & Bradstreet (DnB) company data uses US SIC for company classification (although that's obsoleted by NAICS). SIC is available in many places, even as RDF.

However, D&B have also elaborated a SIC extension (adding 4 digits to the original 4). Does anyone know if it's available somewhere? Given it's only nomenclature data I hope it won't need a commercial license, but I've heard DnB even license the use of the DUNS number...


Thanks for the Padukah dataset! However, I can't figure out what coding system it uses. Eg Row 14 has these codes:

  • 75204 Pet Washing & Grooming
  • 29103 Reptiles
  • 599930 Pet Shops

Can you relate it to either:

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Here is a link to a dataset of businesses from Paducah, KY, which include a SIC designation.

I'm not exactly sure what's going on with these industry codes. I looked into it briefly and since it's a six-digit code I'm wondering if it's not reflecting the NAICS 2017 revision or some other weird industry code. I didn't name the columns so I'm not sure what the history of it is. I used the dataset for other purposes whenever I originally obtained it. If you do happen to be able to verify what exactly the codes are indicating let me know.

NAICS 2017 revision

  • Thanks! But Can you relate it to either SIC or NAICS? See extra question above – Vladimir Alexiev Mar 21 at 16:12
  • The attached screenshot (attached to my original answer) is what that portion of data looks like. I'm sure there is a way to take a SIC number code and "translate" it into the most similar NAICS. There may be a script online or a resource that lists which SIC counts as a specific NAICS category such that many SIC may correspond to one NAICS et cetera. I have much, much more data available like that connected to the link provided, but instead of only for Paducah, KY it's for the entire US. – ThomasPepperz Mar 21 at 16:34
  • The above are neither SIC nor NAICS codes, that's my point. Check the 3 codes I've picked against SIC and NAICS, and you'll see. Calling a field "SIC" doesn't make it so ;-) – Vladimir Alexiev Mar 23 at 11:15
  • I think they may be the 2017 revised NAICS codes now that I look at it (I didn't label the columns and never used the data for the industry codes). I'm attaching a screen shot or two of what I think they may actually be. – ThomasPepperz Mar 23 at 15:58

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