Analysis
NAICS 5415 is the 2022 industry group for computer systems design and related services, part of 541 (Professional, Scientific, and Technical Services).
It has only one more detailed code, 54151, which covers exactly the same activities; the definition, index entries and statistics are on that page.
County Business Patterns counts 145,813 US establishments in this code in 2023, employing 2,050,626 people at an average annual payroll of $122,296 per employee (92nd percentile of national industries). 73% of the establishments have fewer than five employees, which marks it as a small-business industry.
Between 2018 and 2023 the number of establishments grew 4% and employment rose 8%. 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 3rd of the 9 codes at this level within Professional, Scientific, and Technical Services, with 14.7% of them.