Analysis
NAICS 81392 is the 2022 NAICS industry for professional organizations, part of 8139 (Business, Professional, Labor, Political, and Similar Organizations).
It has only one more detailed code, 813920, which covers exactly the same activities; the definition, index entries and statistics are on that page.
County Business Patterns counts 6,529 US establishments in this code in 2023, employing 86,514 people at an average annual payroll of $101,242 per employee (85th percentile of national industries). 62% of the establishments have fewer than five employees, which marks it as a small-business industry.
Between 2018 and 2023 the number of establishments fell 12% and employment fell 2%. The 2018 count used NAICS 2017, so part of a large move can come from codes being redefined rather than from businesses opening or closing.
By establishments it ranks 4th of the 5 codes at this level within Business, Professional, Labor, Political, and Similar Organizations, with 12% of them.
Official definition
See industry description for 813920.
Source: US Census Bureau, NAICS 2022 Manual.