What is the required speed limit in residential areas in Illinois unless posted otherwise?

In Illinois, the default speed limit in residential areas is 25 miles per hour unless otherwise posted. This speed limit is set to ensure the safety of residents, particularly children, pets, and pedestrians who may be in close proximity to the roadway. Lower speed limits in residential areas help to reduce the risk of accidents and enhance the quality of life for those who live in such neighborhoods.

While some residential areas might have posted limits that differ from the standard 25 miles per hour, this speed serves as a guideline for drivers to be aware of, promoting safer driving practices in places where people may frequently be present. The other speed limits presented do not apply as a general rule in residential zones, making 25 miles per hour the correct and most applicable answer.