CHICAGO – Here are some fast facts about how buying health insurance will change in Illinois as President Barack Obama’s health overhaul takes effect and the first insurance exchange starts operating later this year:

Q. How many people are uninsured in Illinois and how many of those are projected to get insurance under the exchange?

A. Nearly 1.8 million Illinois residents are uninsured. An estimated 486,000 Illinois residents will get coverage from commercial insurers through the exchange in 2014, growing to 1 million customers by 2016.