Analysis
NAICS 3351 is the 2022 industry group for electric lighting equipment manufacturing, part of 335 (Electrical Equipment, Appliance, and Component Manufacturing).
It has only one more detailed code, 33513, which covers exactly the same activities; the definition, index entries and statistics are on that page.
County Business Patterns counts 1,021 US establishments in this code in 2023, employing 34,408 people at an average annual payroll of $73,611 per employee (59th percentile of national industries). 36% of the establishments have fewer than five employees, which is close to the national mix.
Its goods appear in 89 statistical lines of the US tariff schedule, mostly under headings 9405 (luminaires and lighting fittings including searchlights and…), 8539 (electrical filament or discharge lamps, including sealed…) and 8513 (portable electric lamps designed to function by their own…). That link is how import data is matched to domestic producers, for example in trade-remedy cases.
Between 2018 and 2023 the number of establishments fell 6% and employment fell 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.