Northfield is located in Iowa. Northfield, Iowa has a population of 788.
The median household income in Northfield, Iowa is $57,973. The median household income for the surrounding county is $47,524 compared to the national median of $57,652. The median age of people living in Northfield is 38.5 years.
The average high temperature in July is 85.3 degrees, with an average low temperature in January of 15.2 degrees. The average rainfall is approximately 37.9 inches per year, with 30.9 inches of snow per year.