|Table of contents| 3 Cities and towns Geography\nAccording to
the U.S. Census Bureau, the county has a total area of 1,871 km²
(723 mi²). 1,839 km² (710 mi²) of it is land and 33 km² (13 mi²)
of it is water. The total area is 1.74% water. Demographics\nAs
of the census2 of 2000, there are 322,895 people, 125,327
households, and 73,692 families residing in the county. The
population density is 176/km² (455/mi²). There are 131,069
housing units at an average density of 71/km² (185/mi²). The
racial makeup of the county is 77.40% White, 12.29% Black or
African American, 0.36% Native American, 6.30% Asian, 0.04%
Pacific Islander, 1.04% from other races, and 2.57% from two or
more races. 2.74% of the population are Hispanic or Latino of
any race. There are 125,327 households out of which 29.20% have
children under the age of 18 living with them, 46.40% are
married couples living together, 9.30% have a female householder
with no husband present, and 41.20% are non-families. 29.50% of
all households are made up of i