As of the census of 2000, there were 9,020 people, 3,426 households, and 2,500 families residing in the city. The population density was 853.6/km² (2,208.8/mi²). There were 3,592 housing units at an average density of 339.9/km² (879.6/mi²). The racial makeup of the city was 93.07% White, 0.27% African American, 0.45% Native American, 2.26% Asian, 2.51% from other races, and 1.44% from two or more races. Hispanic or Latino of any race were 4.73% of the population.
There were 3,426 households out of which 34.5% had children under the age of 18 living with them, 62.8% were married couples living together, 7.9% had a female householder with no husband present, and 27.0% were non-families. 24.8% of all households were made up of individuals and 15.3% had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 3.11.
In the city the population was spread out with 28.2% under the age of 18, 8.0% from 18 to 24, 25.5% from 25 to 44, 19.0% from 45 to 64, and 19.3% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 89.7 males. For every 100 females age 18 and over, there were 84.7 males.
The median income for a household in the city was $42,767, and the median income for a family was $50,449. Males had a median income of $39,597 versus $23,292 for females. The per capita income for the city was $20,639. About 4.1% of families and 6.1% of the population were below the poverty line, including 4.5% of those under age 18 and 12.7% of those age 65 or over.