Location of Northfield, Wisconsin
|• Total||36.0 sq mi (93.2 km2)|
|• Land||36.0 sq mi (93.1 km2)|
|• Water||0.0 sq mi (0.1 km2)|
|Elevation||1,060 ft (323 m)|
|• Density||16.3/sq mi (6.3/km2)|
|Time zone||Central (CST) (UTC-6)|
|• Summer (DST)||CDT (UTC-5)|
|Area code(s)||715 & 534|
|GNIS feature ID||1583826|
According to the United States Census Bureau, the town has a total area of 36.0 square miles (93.2 km²), of which, 36.0 square miles (93.1 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.11%) is water.
As of the census of 2000, there were 586 people, 224 households, and 180 families residing in the town. The population density was 16.3 people per square mile (6.3/km²). There were 261 housing units at an average density of 7.3 per square mile (2.8/km²). The racial makeup of the town was 98.81% White, 0.17% Native American, 0.34% Asian, 0.17% from other races, and 0.51% from two or more races. Hispanic or Latino of any race were 0.51% of the population.
There were 224 households out of which 25.9% had children under the age of 18 living with them, 70.1% were married couples living together, 5.4% had a female householder with no husband present, and 19.2% were non-families. 17.0% of all households were made up of individuals and 8.5% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.70.
In the town, the population was spread out with 18.8% under the age of 18, 6.5% from 18 to 24, 24.2% from 25 to 44, 30.2% from 45 to 64, and 20.3% who were 65 years of age or older. The median age was 45 years. For every 100 females there were 117.0 males. For every 100 females age 18 and over, there were 124.5 males.
The median income for a household in the town was $35,250, and the median income for a family was $41,042. Males had a median income of $26,875 versus $20,000 for females. The per capita income for the town was $15,356. About 9.0% of families and 10.0% of the population were below the poverty line, including 5.2% of those under age 18 and 22.9% of those age 65 or over.
- William F. Dettinger, Wisconsin State Assemblyman and farmer, was born in the town; Dettinger served as Northfield Town Board chairman.