1840
Map Display:
Number of SlavesNumber of Free Persons
Total Population
% of Population in Slavery
Legend
| No Slaves | 0 to 5,000 Persons | 0 to 50,000 Persons | 0 to 5 Percent | |
| 1 to 1,000 Slaves | 5,000 to 10,000 Persons | 50,000 to 100,000 Persons | 5 to 10 Percent | |
| 1,000 to 5,000 Slaves | 10,000 to 20,000 Persons | 100,000 to 200,000 Persons | 10 to 15 Percent | |
| 5,000 to 10,000 Slaves | 20,000 to 30,000 Persons | 200,000 to 300,000 Persons | 15 to 20 Percent | |
| 10,000 to 25,000 Slaves | 30,000 to 40,000 Persons | 300,000 to 400,000 Persons | 20 to 25 Percent | |
| 25,000 to 50,000 Slaves | 40,000 to 50,000 Persons | 400,000 to 500,000 Persons | 25 to 30 Percent | |
| 50,000 to 100,000 Slaves | 50,000 to 60,000 Persons | 500,000 to 600,000 Persons | 30 to 40 Percent | |
| 100,000 to 250,000 Slaves | 60,000 to 70,000 Persons | 600,000 to 700,000 Persons | 40 to 50 Percent | |
| More than 250,000 Slaves | More than 70,000 Persons | More than 700,000 Persons | Greater than 50 Percent |
