Most Popular 'Chicago Fire' Cast Members, Ranked by Instagram Followers

Chicago Fire is one of the biggest shows on TV, and its stars are especially popular on social media.

The beloved NBC series centers around the personal and professional lives of the firefighters, rescue team and paramedics of the Chicago Fire Department at Firehouse 51.

Along the way, several of the cast members have amassed an impressive following on social media.

We’ve put together all the stars past and present of the main cast of Chicago Fire, and ranked them from lowest to highest following.