| Business | Phone |
| Western Illinois School Bnft 705 Park Ave E, Princeton 61356 | (815) 875-1510 |
| Special Education District 526 S Bureau Valley Pkwy D, Princeton 61356 | (815) 875-2645 |
| St Louis Catholic School 631 Park Ave W, Princeton 61356 | (815) 872-8521 |
| Douglas Elementary School 220 E Lasalle St, Princeton 61356 | (815) 872-9741 |
| Jefferson Elementary School 725 W Putnam St, Princeton 61356 | (815) 875-4417 |
| Lincoln Elementary School 501 S Euclid Ave, Princeton 61356 | (815) 875-1164 |
| Logan Junior High School 302 W Central Ave, Princeton 61356 | (815) 875-6415 |
| Princeton Elementary School 220 E Lasalle St, Princeton 61356 | (815) 875-6075 |
| Princeton School District Ofc 506 E Dover Rd, Princeton 61356 | (815) 875-3162 |
| Princeton School Supt 103 S Euclid Ave, Princeton 61356 | (815) 875-3308 |