In 1860:
46,300 slave labor camps (camps with 20 or more enslaved persons) existed in the United States.
20,800 slave labor camps (45%) held between 20 and 30 enslaved persons.
2,278 slave labor camps (5%) held 100-500 enslaved persons.
13 slave labor camps held 500-1000 enslaved persons.
1 slave labor camp held over 1000 enslaved persons.
Plantation Life, Enslavement, African American Identity: Vol. I, 1500-1865, Primary Resources in U.S. History and Literature, Toolbox Library, National Humanities Center (source has been edited for clarity)
