Illinois is the top state for LEED, with 161 certified projects totaling 3.43 square feet certified per person, according to the U.S. Green Building Council’s (USGBC) latest ranking of the top 10 states for LEED. Maryland and Massachusetts came in a close second and third place, with 3.06 and 3.03 square feet certified per person, respectively. Washington and Colorado round out the top five, followed by Nevada, California, Texas, Virginia and Utah. Washington, D.C., earned an honorable mention for achieving 19.3 square feet certified per person. Among the top 10 states, there were 1,633 total projects certified in 2015 totaling 275 million square feet. 

The USGBC also released data on the number of projects certified since Jan. 1. One hundred sixty-six projects have been certified at all levels, with the majority (65) achieving LEED Gold. Overall, 28 million square feet have been certified since the beginning of 2016, and the most projects fall under the LEED-NC, LEED-CI Retail, LEED-EB:OM and LEED-CS rating systems.