Analysis
NAICS 3364 is the 2022 industry group for aerospace product and parts manufacturing, part of 336 (Transportation Equipment Manufacturing).
It has only one more detailed code, 33641, which covers exactly the same activities; the definition, index entries and statistics are on that page.
County Business Patterns counts 1,907 US establishments in this code in 2023, employing 428,728 people at an average annual payroll of $108,008 per employee (88th percentile of national industries). 24% of the establishments have fewer than five employees, which points to larger operations.
By establishments it ranks 3rd of the 7 codes at this level within Transportation Equipment Manufacturing, with 16.3% of them.
Between 2018 and 2023 the number of establishments fell 1% and employment rose 5%. 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.