Allendale is located in Illinois. Allendale, Illinois 62410has a population of 715. Allendale 62410 is more family-centric than the surrounding county with 40.85% of the households containing married families with children. The county average for households married with children is 33.04%.
The median household income in Allendale, Illinois 62410 is $49,063. The median household income for the surrounding county is $49,716 compared to the national median of $57,652. The median age of people living in Allendale 62410 is 32.1 years.
The average high temperature in July is 86.9 degrees, with an average low temperature in January of 23.9 degrees. The average rainfall is approximately 46.5 inches per year, with 8.6 inches of snow per year.