Armstrong is located in Illinois. Armstrong, Illinois has a population of 476. Armstrong is less family-centric than the surrounding county with 6.5% of the households containing married families with children. The county average for households married with children is 24.69%.
The median household income in Armstrong, Illinois is $56,875. The median household income for the surrounding county is $44,930 compared to the national median of $57,652. The median age of people living in Armstrong is 49.3 years.
The average high temperature in July is 86.7 degrees, with an average low temperature in January of 16.1 degrees. The average rainfall is approximately 40.5 inches per year, with 17.9 inches of snow per year.
