Allendale is located in Illinois. Allendale, Illinois 62410has a population of 709. Allendale 62410 is more family-centric than the surrounding county with 37.19% of the households containing married families with children. The county average for households married with children is 25.2%.
The median household income in Allendale, Illinois 62410 is $75,234. The median household income for the surrounding county is $49,680 compared to the national median of $69,021. The median age of people living in Allendale 62410 is 30.6 years.
The average high temperature in July is 87.8 degrees, with an average low temperature in January of 22.6 degrees. The average rainfall is approximately 46.8 inches per year, with 11.3 inches of snow per year.