| Business | Phone |
| Edgar Murray Grade School 1044 High School Dr, St Clair 63077 | (636) 629-1121 |
| Edgar Murray Grade School 905 Bardot St, St Clair 63077 | (636) 629-0973 |
| Franklin Cnty Special Ed 1773 W Springfield Rd, St Clair 63077 | (636) 629-3571 |
| St Clair Elementary School 905 Bardot St, St Clair 63077 | (636) 629-1707 |
| St Clair Jr High School 925 High School Dr, St Clair 63077 | (636) 629-0588 |
| St Clair School District 905 Bardot St, St Clair 63077 | (636) 629-7670 |
| St Clair Senior High School 1015 High School Dr, St Clair 63077 | (636) 629-3103 |
| St Clair Superintendent's Ofc 905 Bardot St, St Clair 63077 | (636) 629-3500 |
| St Clare Catholic School 305 E Springfield Rd, St Clair 63077 | (636) 629-0413 |
| St Clare Catholic School Kndgn 165 E Springfield Rd, St Clair 63077 | (636) 629-0601 |