Springfield Sangamon Growth Alliance Share: Developers Springfield Sangamon Growth Alliance Visit Website Request Info 531 E. Washington St. - 5th Floor Springfield, IL 62701 (217) 679-3500 LinkedIn Facebook About Map About A public and private sector partnership dedicated to advancing economic growth of Sangamon County. Created the "Thrive In SPI" community marketing campaign. What's Nearby? Distance: 5 10 15 20 25 50 mi.
