Potomac is located in Illinois. Potomac, Illinois has a population of 630. Potomac is more family-centric than the surrounding county with 28.66% of the households containing married families with children. The county average for households married with children is 24.69%.
The median household income in Potomac, Illinois is $45,250. 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 Potomac is 33 years.
The average high temperature in July is 85.6 degrees, with an average low temperature in January of 18 degrees. The average rainfall is approximately 40.5 inches per year, with 18.9 inches of snow per year.
