As of the census of 2000, there were 44,942 people, 15,898 households, and 12,177 families residing in the city. The population density is 1,330 people per square mile (512/km²). There are 16,169 housing units at an average density of 477.6/sq mi (184.4/km²). The racial makeup of the city is 93.46% White, 0.86% African American, 0.63% Native American, 2.54% Asian, 0.02% Pacific Islander, 0.75% from other races, and 1.75% from two or more races. 1.72% of the population are Hispanic or Latino of any race. By 2003 the US census estimated that the population had grown to 50,425 [1].

There are 15,898 households out of which 41.1% have children under the age of 18 living with them, 61.1% are married couples living together, 11.1% have a female householder with no husband present, and 23.4% are non-families. 17.0% of all households are made up of individuals and 3.3% have someone living alone who is 65 years of age or older. The average household size is 2.82 and the average family size is 3.19.

In the city the population is spread out with 29.1% under the age of 18, 8.7% from 18 to 24, 34.8% from 25 to 44, 22.0% from 45 to 64, and 5.3% who are 65 years of age or older. The median age is 33 years. For every 100 females there are 100.2 males. For every 100 females age 18 and over, there are 98.1 males.

The median income for a household in the city is $59,219, and the median income for a family is $63,831. Males have a median income of $40,620 versus $30,452 for females. The per capita income for the city is $22,777. 3.0% of the population and 2.1% of families are below the poverty line. Out of the total population, 3.0% of those under the age of 18 and 3.7% of those 65 and older are living below the poverty line.