 | Horace Mann | springfield, illinois, united states | 1.2K | insurance | 1945 | |
 | Marine Bank | springfield, illinois, united states | 144 | banking | 1960 | |
| springfield clinic | springfield, illinois, united states | 1.6K | hospitals and health care | 1939 | |
 | Illinois State Police Investigations | Springfield, illinois, united states | 280 | law enforcement | 1949 | |
 | Systemax | Springfield, illinois, united states | 85 | marketing and advertising | 1982 | |
 | Illinois State Dental Society | Springfield, illinois, united states | 26 | hospital and health care | 1865 | |
 | Illinois Times | Springfield, illinois, united states | 21 | publishing | 1975 | |
 | White Fox Social Media | Springfield, illinois, united states | 2 | marketing and advertising | 2013 | |
 | Illinois Press Association | Springfield, illinois, united states | 18 | publishing | 1865 | |
| Illinois Secretary of State Police | Springfield, illinois, united states | 30 | law enforcement | 1913 | |
 | Blh Computers Inc | Springfield, illinois, united states | 4 | information technology and services | - | |
 | Clean Impact Commercial Cleaning | Springfield, illinois, united states | 7 | facilities services | 2018 | |
| Capitol Retirement Village | Springfield, illinois, united states | 5 | financial services | - | |
| Springfield Overhead Doors Inc | Springfield, illinois, united states | 1 | construction | - | |
 | Illinois Tax Increment | Springfield, illinois, united states | 3 | non-profit organizations | - | |
 | gallaghers steak house | springfield, illinois, united states | - | entertainment | - | |
 | illinois institute for continuing legal education | springfield, illinois, united states | - | legal services | 1961 | |
| crawford, murphy & tilly, inc. | springfield, illinois, united states | - | civil engineering | 1946 | |
 | delano law offices, llc | springfield, illinois, united states | - | law practice | 1967 | |
| infinity professional services group inc | springfield, illinois, united states | - | legal services | 2011 | |
