2020 census

As of the 2020 United States census, there were 20,663 people, 8,203 households, and 5,260 families residing in the city.

2000 census

As of the census^[9] of 2000, there were 9,764 people, 3,601 households, and 2,823 families residing in the city. The population density was 1,076.4 inhabitants per square mile (415.6/km²). There were 3,762 housing units at an average density of 414.7 per square mile (160.1/km²). The racial makeup of the city was 95.2% White, 1.5% Black or African American, 0.34% Native American, 1.05% Asian, 0.37% from other races, and 0.84% from two or more races. 1.05% of the population were Hispanic or Latino of any race.

There were 3,601 households, out of which 42.6% had children under the age of 18 living with them, 63.9% were married couples living together, 11.1% had a female householder with no husband present, and 21.6% were non-families. 19.1% of all households were made up of individuals, and 7.0% had someone living alone who was 65 years of age or older. The average household size was 2.65 and the average family size was 3.03.

In the city, the population was spread out, with 27.9% under the age of 18, 7.1% from 18 to 24, 32.7% from 25 to 44, 21.8% from 45 to 64, and 10.4% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 89.8 males. For every 100 females age 18 and over, there were 86.5 males.

The median income for a household in the city was $48,870, and the median income for a family was $56,038. Males had a median income of $39,380 versus $26,261 for females. The per capita income for the city was $20,730. About 3.5% of families and 4.8% of the population were below the poverty line, including 6.1% of those under age 18 and 8.0% of those age 65 or over.