Alton is located in Illinois. Alton, Illinois 62002has a population of 27,037. Alton 62002 is less family-centric than the surrounding county with 20.03% of the households containing married families with children. The county average for households married with children is 29.92%.
The median household income in Alton, Illinois 62002 is $37,495. The median household income for the surrounding county is $56,536 compared to the national median of $57,652. The median age of people living in Alton 62002 is 38 years.
The average high temperature in July is 88.9 degrees, with an average low temperature in January of 23 degrees. The average rainfall is approximately 41.5 inches per year, with 12.1 inches of snow per year.
