Fairfield is located in Illinois. Fairfield, Illinois has a population of 4,982. Fairfield is less family-centric than the surrounding county with 30.69% of the households containing married families with children. The county average for households married with children is 31.37%.
The median household income in Fairfield, Illinois is $42,083. The median household income for the surrounding county is $51,540 compared to the national median of $69,021. The median age of people living in Fairfield is 42.6 years.
The average high temperature in July is 88.2 degrees, with an average low temperature in January of 22.1 degrees. The average rainfall is approximately 44.8 inches per year, with 12.2 inches of snow per year.
