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Washtenaw County, Michigan

Washtenaw County is a county located in the U.S. State of Michigan. As of 2000, the population is 322,895. Its county seat is Ann Arbor6.

Geography According 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 As of the census 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% 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 individuals and 5.90% have someone living alone who is 65 years of age or older. The average household size is 2.41 and the average family size is 3.02.

In the county the population is spread out with 22.10% under the age of 18, 17.10% from 18 to 24, 32.10% from 25 to 44, 20.60% from 45 to 64, and 8.10% who are 65 years of age or older. The median age is 31 years. For every 100 females there are 98.90 males. For every 100 females age 18 and over, there are 97.10 males.

The median income for a household in the county is $51,990, and the median income for a family is $70,393. Males have a median income of $49,304 versus $33,598 for females. The per capita income for the county is $27,173. 11.10% of the population and 5.10% of families are below the poverty line. Out of the total people living in poverty, 8.60% are under the age of 18 and 5.80% are 65 or older.

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