Analysis
NAICS 23721 is the 2022 NAICS industry for land subdivision, part of 2372 (Land Subdivision).
It has only one more detailed code, 237210, which covers exactly the same activities; the definition, index entries and statistics are on that page.
County Business Patterns counts 4,441 US establishments in this code in 2023, employing 24,810 people at an average annual payroll of $90,096 per employee (78th percentile of national industries). 75% 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 11% and employment rose 13%. 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.
Official definition
See industry description for 237210.
Source: US Census Bureau, NAICS 2022 Manual.