Big Sister matches girls (Little Sisters) between the ages of 7 and 15 with a caring adult woman mentor. While our Little Sisters come from a wide range of ethnic, socio-economic, and family backgrounds, our average Little Sister is 12 years old, living with a single mother in Dorchester of Roxbury, and is African-American or Hispanic. In 2009, we served a total of 2,725 girls across all of our mentoring programs. | Little Sisters by Age | | 7 | 2% | | 8 | 5% | | 9 | 9% | | 10 | 12% | | 11 | 14% | | 12 | 16% | | 13 | 13% | | 14 | 11% | | 15 | 8% | | 16 | 5% | | 17 | 3% | | 18+ | 4% |
| | Little Sisters by Ethnicity | | African American/Black | 36% | | Hispanic | 24% | | Caucasian | 16% | | Multi-racial | 12% | | Asian | 7% | | Other | 6% |
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| Little Sisters by Region | | Boston | 68% | | West Suburbs/Cambridge | 12% | | North Shore | 12% | | South Shore | 7% | | Other Service Area | 1% |
| | Little Sisters by Living Situation | | One Parent (Female) | 49% | | Two Parents | 33% | | Other Guardian | 6% | | Grandparents | 4% | | One Parent (Male) | 4% | | Other Relative | 3% | | Foster Home | 1% | | Group Home | <1% |
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| Little Sisters by Boston Neighborhood (68%) | | Roxbury | 17% | | Dorchester | 15% | | South End | 7% | | East Boston | 5% | | Mattapan | 4% | | Brighton | 3% | | South Boston | 3% | | Hyde Park | 2% | | Fenway | 2% | | Allston | 2% | | Charlestown | 2% | | Jamaica Plain | 2% | | Roslindale | 1% | Chinatown | 1% | | Back Bay | 1% | | West Roxbury | <1% | | North End | <1% | | Beacon Hill | <1% |
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