As of 2021 there were 116,380 people employed as First-Line Supervisors of Landscaping, Lawn Service, and Groundskeeping Workers within the United States.
This represents around 0.08% of the employed workforce across the country.
Put another way, around 1 in 1 thousand people are employed as First-Line Supervisors of Landscaping, Lawn Service, and Groundskeeping Workers.