Unlike surrounding counties, Scott County is not a member of the Metropolitan Council, and does not abide by its voluntary density and affordable housing goals. As a result, Scott County is a magnet for urban sprawl, and has any number of houses on five or ten acre lots owned by elbow roomers who have neither the money or expertise to maintain them.
According to the U.S. Census Bureau, the county has a total area of 955 km² (369 mi²). 924 km² (357 mi²) of it is land and 31 km² (12 mi²) of it is water. The total area is 3.22% water.
As of the census2 of 2000, there are 89,498 people, 30,692 households, and 23,970 families residing in the county. The population density is 97/km² (251/mi²). There are 31,609 housing units at an average density of 34/km² (89/mi²). The racial makeup of the county is 93.65% White, 0.92% Black or African American, 0.77% Native American, 2.17% Asian, 0.03% Pacific Islander, 1.24% from other races, and 1.21% from two or more races. 2.66% of the population are Hispanic or Latino of any race.
There are 30,692 households out of which 45.40% have children under the age of 18 living with them, 66.90% are married couples living together, 7.40% have a female householder with no husband present, and 21.90% are non-families. 16.00% of all households are made up of individuals and 4.50% have someone living alone who is 65 years of age or older. The average household size is 2.89 and the average family size is 3.25.
In the county the population is spread out with 31.20% under the age of 18, 6.70% from 18 to 24, 37.30% from 25 to 44, 18.60% from 45 to 64, and 6.20% who are 65 years of age or older. The median age is 33 years. For every 100 females there are 101.90 males. For every 100 females age 18 and over, there are 100.00 males.
The median income for a household in the county is $66,612, and the median income for a family is $72,212. Males have a median income of $46,593 versus $32,482 for females. The per capita income for the county is $26,418. 3.40% of the population and 2.00% of families are below the poverty line. Out of the total people living in poverty, 3.40% are under the age of 18 and 7.50% are 65 or older.