| Business | Phone |
| Central Elementary School 400 Clinton St, Ottawa 61350 | (815) 433-3761 |
| Deer Park School District 82 2350 E 1025th Rd, Ottawa 61350 | (815) 434-6930 |
| Jefferson Elementary School 1709 Columbus St, Ottawa 61350 | (815) 434-0726 |
| La Salle County Supt-Schools 119 W Madison St 102, Ottawa 61350 | (815) 434-0780 |
| La Salle-Putman Special Ed 1009 Boyce Memorial Dr, Ottawa 61350 | (815) 433-6433 |
| Lincoln Elementary School 1105 W Madison St, Ottawa 61350 | (815) 434-1250 |
| Marquette High School 1000 Paul St, Ottawa 61350 | (815) 433-0125 |
| Mc Kinnley Elementary School 1320 State St, Ottawa 61350 | (815) 433-1907 |
| Ottawa Opportunity School 114 E Jefferson St, Ottawa 61350 | (815) 433-2731 |
| Ottawa Superintendent's Ofc 320 W Main St, Ottawa 61350 | (815) 433-1133 |
| Ottawa Township High School 211 E Main St, Ottawa 61350 | (815) 433-1323 |
| Rutland School District 230 3231 N State Route 71, Ottawa 61350 | (815) 433-2949 |
| H R Imaging 4105 Progress Dr, Ottawa 61350 | (815) 434-7872 |
| St Columba School 1110 La Salle St, Ottawa 61350 | (815) 433-1199 |
| St Francis Parish Ctr 814 Sanger St, Ottawa 61350 | (815) 433-1198 |
| St Patrick's School 801 W Jefferson St, Ottawa 61350 | (815) 434-4889 |
| W P Shepherd Junior High Schl 701 E Mckinley Rd, Ottawa 61350 | (815) 434-7925 |
| Wallace Grade School 1463 N 33rd Rd, Ottawa 61350 | (815) 433-2986 |