This map represents the percentage of the Black population living below the poverty line in 1999 in Montgomery County. The poverty line is determined for families and individuals and not households, which are all occupants in one housing unit. The poverty line in 1999 was $13,290 for a 3-person family, and $17,028 for a 4-person family. The higher percentages of Blacks living under the poverty line is in close proximity to the city line. As Montgomery County is a more affluent county in Maryland, it is not surprising there are not much higher percentages of Blacks below the poverty line throughout.