What Is a SIC Code? Standard Industrial Classification (SIC) codes are four-digit numerical codes used to categorize U.S. companies by the industries in which they operate.

Discover the best portfolio management software tools. Learn how the best companies compare in terms of costs, features, support, and so much more.

US News ranks the best jobs without a college degree in America by scoring 7 factors like salary, work life balance, long term growth and stress level.