Industry codes are standardized numerical or alphanumeric systems used to classify businesses and their activities. These codes help organize economic data, making it easier to analyze trends and compare different sectors. Common examples include the North American Industry Classification System (NAICS) and the Standard Industrial Classification (SIC). By using industry codes, government agencies, researchers, and businesses can efficiently gather and share information about specific industries. This classification system aids in regulatory compliance, economic analysis, and market research, allowing stakeholders to make informed decisions based on accurate data.