WASHINGTON — The U.S. Green Building Council (USGBC) released its annual list of the Top 10 States for LEED green building with Massachusetts leading the country in 2020 with the most certified square feet per capita. Across the top states, more than 60% of certifications were office, health care, higher education, and K-12 projects. This year, USGBC also released a ranking of states with the most LEED professionals with California taking the top spot. Collectively, the 2020 rankings represent 1,171 certified LEED buildings and spaces as well as more than 100,000 green building workers.