- Developed in the 1930s, the Standard Industrial Classification (SIC) code is a 4-digit scheme that organizes 1,004 industries. Some 400 of these are services.
- Developed in 1997, the North American Industrial Classification System (NAICS), is a six-digit scheme that organizes 1,170 industries, of which 565 are services. Many of the NAICS industries emerged over the past 20 years.
For more information, see:
- 2007 NAICS Definition. 611620 Sports and Recreation.
"This industry comprises establishments, such as camps and schools, primarily engaged in offering instruction in athletic activities to groups of individuals. 0vernight and day sports instruction." Includes cross references to additional NAICS codes.
- 2007 NAICS Definition.713940 Fitness and Recreational Sports Centers.
"This industry comprises establishments primarily engaged in operating fitness and recreational sports facilities featuring exercise and other active physical fitness conditioning or recreational sports activities, such as swimming, skating, or racquet sports."