The state of Illinois has a population of 12,947,252, and is formerly abbreviated as IL. Illinois has 4,787,419 households in the state, with an average of 2.63 people living in each of them. Of the 12,947,252 people living in Illinois, 49.32% are male, 50.68% are female, 56.41% are married and 43.59% are single. 62.73% of existing homes are owned by inhabitants, with a median home cost of $176,120 in the state.
Air quality in Illinois is rated at 43.1/100, and water quality at 36/100. There are 210.6 physicians in Illinois per 100,000 of the population. Unemployment rates average 10.50% in the state and the sales tax rate is 8.00%.
Average income per household in Illinois is $55,396. 11.21% of households have income levels less than $15,000 per year. 20.12% of households have income levels between $50,000 and $75,000 annually, and 0.79% earn more than $500,000 per year.