Northfield is a city in Dakota and Rice counties in the State of Minnesota. The city is mostly in Rice County, with a small portion in Dakota County. The population was 20,007 during the 2010 census.
According to the United States Census Bureau, the city has a total area of 8.61 square miles (22.30 km); 8.56 square miles (22.17 km) is land and 0.05 square miles (0.13 km) is water. The peak elevation is about 912 feet.
Roughly speaking, the town is centered around the Cannon River and rises both to the east and the west away from this bisecting river body.
Interstate 35 is 6 mi (9.7 km) west of Northfield. Minnesota State Highways 3, 19, and 246 are three of the main routes in Northfield.
As of the census of 2010, there were 20,007 people, 6,272 households, and 3,946 families residing in the city. The population density was 2,337.3 inhabitants per square mile (902.4/km). There were 6,832 housing units at an average density of 798.1 per square mile (308.1/km). The racial makeup of the city was 88.8% White, 1.3% African American, 0.2% Native American, 3.5% Asian, 4.0% from other races, and 2.2% from two or more races. Hispanic or Latino of any race were 8.4% of the population.
There were 6,272 households of which 32.8% had children under the age of 18 living with them, 50.0% were married couples living together, 9.3% had a female householder with no husband present, 3.6% had a male householder with no wife present, and 37.1% were non-families. 30.7% of all households were made up of individuals and 13.1% had someone living alone who was 65 years of age or older. The average household size was 2.44 and the average family size was 3.04.
The median age in the city was 26.4 years. 19.8% of residents were under the age of 18; 29% were between the ages of 18 and 24; 19.1% were from 25 to 44; 20.1% were from 45 to 64; and 12% were 65 years of age or older. The gender makeup of the city was 47.4% male and 52.6% female.
As of the census of 2000, there were 17,147 people, 4,909 households, and 3,210 families residing in the city. The population density was 2,452.2 people per square mile (947.1/km²). There were 5,119 housing units at an average density of 732.1 per square mile (282.8/km²). The racial makeup of the city was 92.57% White, 0.90% African American, 0.34% Native American, 2.36% Asian, 0.05% Pacific Islander, 1.78% from other races, and 1.99% from two or more races. Hispanic or Latino of any race were 5.73% of the population.
There were 4,909 households out of which 35.4% had children under the age of 18 living with them, 52.7% were married couples living together, 9.6% had a female householder with no husband present, and 34.6% were non-families. 27.5% of all households were made up of individuals and 9.6% 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 3.08.
In the city, the population was spread out with 20.2% under the age of 18, 32.1% from 18 to 24 (a figure heavily influenced by the student population of St. Olaf and Carleton College), 21.0% from 25 to 44, 16.1% from 45 to 64, and 10.5% who were 65 years of age or older. The median age was 23 years. For every 100 females, there were 91.3 males. For every 100 females age 18 and over, there were 87.7 males.
The median income for a household in the city was $49,972, and the median income for a family was $61,055. Males had a median income of $40,008 versus $28,456 for females. The per capita income for the city was $18,619. About 2.8% of families and 7.2% of the population were below the poverty line, including 5.3% of those under age 18 and 7.4% of those age 65 or over.
Northfield Minnesota neighborhoods include: 246 Curve to Holden Farms, Alta/320th, Canon park, Carleton College, Dutch Creek Greenvale Twp, Eastern Saint Olaf Ave, Fareway-Central-Park, First Timberlane Drive, Hidden Valley, Hills of Meadowview, Jonathan Hills, Koester Court, Lia and Her Courts, Liberty Park, Little Chicago, Oak Hills South, Oak Lawn Drive, Our Place, Prairie Hills, Presidential, Riley Afton, Sciota Township, Sibley Dr / Prairie St, South Bridgewater, South Northfield, Spring Creek, St. Olaf, Sumner St E, Waterford Township, Webster Twp, Woodley East