Analysis
NAICS 4882 is the 2022 industry group for support activities for rail transportation, part of 488 (Support Activities for Transportation).
It has only one more detailed code, 488210, which covers exactly the same activities; the definition, index entries and statistics are on that page.
Between 2018 and 2023 the number of establishments grew 13% and employment rose 18%. 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 6th of the 6 codes at this level within Support Activities for Transportation, with 3.4% of them.
County Business Patterns counts 1,695 US establishments in this code in 2023, employing 49,372 people at an average annual payroll of $67,688 per employee (49th percentile of national industries). 32% of the establishments have fewer than five employees, which is close to the national mix.