Frederick is located in Illinois. Frederick, Illinois has a population of 407. Frederick is more family-centric than the surrounding county with 31% households with children. The county percentage for households with children is 24%.
The median household income in Frederick, Illinois is $81,736. The median household income for the surrounding county is $56,746 compared to the national median of $66,222. The median age of people living in Frederick is 45.6 years.
The average high temperature in July is 86.5 degrees, with an average low temperature in January of 14.6 degrees. The annual precipitation is 38.36.