SICUnited States (legacy)1987

Standard Industrial Classification

The classic US Standard Industrial Classification (1987) — officially superseded by NAICS but still widely required by OSHA filings, SEC EDGAR, banking and insurance systems. Codes are 4-digit, with finer 6/8-digit detail shown as coded inclusions.

Browse structure Search SIC

ISIC NAICS NAICS Canada SCIAN SIC UK SIC NACE NIC ANZSIC JSIC ICNEA

How a SIC code is built

Each digit narrows the activity from the broadest sector down to a specific national industry. Here's how 0116 decomposes:

A · 0116

DivisionAgriculture, Forestry, & Fishing

Major GroupAgricultural Production - Crops

011

Industry GroupCash Grains

0116

IndustrySoybeans

Structure at a glance

Level	Digits	Count	Example
Division	Letter	10	A Agriculture
Major Group	2-digit	83	01 Agricultural Production
Industry Group	3-digit	416	011 Cash Grains
Industry	4-digit	1,005	0116 Soybeans

Browse divisions

AAgriculture, Forestry, and Fishing BMining CConstruction DManufacturing ETransportation, Communications, Electric, Gas, and Sanitary Services FWholesale Trade GRetail Trade HFinance, Insurance, and Real Estate IServices JPublic Administration

History

Introduced in the 1930s and last revised in 1987 by the US OMB, SIC was replaced by NAICS in 1997 — yet remains embedded in decades of regulatory and financial infrastructure.

Usage & importance

Required or referenced by OSHA record-keeping, SEC EDGAR company filings, bank underwriting and countless legacy databases. Converts to NAICS through the official Census bridge.

Revision timeline

1937

First SIC

Original US standard

1987

SIC 1987

Final revision (current data)

1997

NAICS era

Officially superseded — still in legacy use

Convert SIC codes to any other system

Verified crosswalks between SIC and the other ten systems, both sides clickable.

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