Gridley is located in Illinois. Gridley, Illinois has a population of 1,166. Gridley is more family-centric than the surrounding county with 34% households with children. The county percentage for households with children is 28%.
The median household income in Gridley, Illinois is $69,145. The median household income for the surrounding county is $70,782 compared to the national median of $66,222. The median age of people living in Gridley is 40.5 years.
The average high temperature in July is 85.6 degrees, with an average low temperature in January of 14 degrees. The annual precipitation is 36.5.