As of the census of 2000, there were 4,149 people, 1,638 households, and 1,272 families residing in the city. The population density was 357.0 people per square mile (137.9/km²). There were 1,721 housing units at an average density of 148.1/sq mi (57.2/km²). The racial makeup of the city was 98.99% White, 0.10% Black or African American, 0.22% Native American, 0.07% Asian, 0.24% from other races, and 0.39% from two or more races. 0.46% of the population were Hispanic or Latino of any race.
There were 1,638 households out of which 32.1% had children under the age of 18 living with them, 67.6% were married couples living together, 7.3% had a female householder with no husband present, and 22.3% were non-families. 20.9% of all households were made up of individuals and 11.1% had someone living alone who was 65 years of age or older. The average household size was 2.53 and the average family size was 2.93.
In the city the population was spread out with 22.9% under the age of 18, 7.1% from 18 to 24, 28.0% from 25 to 44, 26.7% from 45 to 64, and 15.3% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 93.7 males. For every 100 females age 18 and over, there were 89.2 males.
The median income for a household in the city was $37,923, and the median income for a family was $42,534. Males had a median income of $32,444 versus $26,513 for females. The per capita income for the city was $17,476. About 3.8% of families and 4.3% of the population were below the poverty line, including 6.0% of those under age 18 and 1.7% of those age 65 or over.