Districts with most students attending charter schools, 2008-09
| Los Angeles | 59,122 |
| Detroit | 43,035 |
| Philadelphia | 32,579 |
| Houston | 29,889 |
| Chicago | 28,973 |
| Washington, D.C. | 25,729 |
| Miami-Dade | 23,865 |
| New York City | 21,367 |
| New Orleans | 20,068 |
| Broward County | 19,867 |
| Source: National Alliance for Public Charter Schools | |