Sullivan is located in Indiana. Sullivan, Indiana has a population of 4,122. Sullivan is less family-centric than the surrounding county with 23.79% of the households containing married families with children. The county average for households married with children is 27.9%.
The median household income in Sullivan, Indiana is $29,344. The median household income for the surrounding county is $45,031 compared to the national median of $57,652. The median age of people living in Sullivan is 45.1 years.
The average high temperature in July is 86.4 degrees, with an average low temperature in January of 20.4 degrees. The average rainfall is approximately 44.2 inches per year, with 14 inches of snow per year.
