| Business | Phone |
| Calvert Career Ctr 330 Dorsey Rd, Prince Frederick 20678 | (410) 535-7450 |
| Calvert Country Special Ed 1350 Dares Beach Rd, Prince Frederick 20678 | (410) 535-7300 |
| Calvert County Public Schools 1305 Dares Beach Rd, Prince Frederick 20678 | (410) 535-1700 |
| Calvert County Special Edctn 1305 Dares Beach Rd, Prince Frederick 20678 | (301) 855-1834 |
| Calvert Elementary School 1450 Dares Beach Rd, Prince Frederick 20678 | (410) 535-7311 |
| Calvert High School 600 Dares Beach Rd, Prince Frederick 20678 | (410) 535-7333 |
| Calvert Middle School 435 Solomons Island Rd N, Prince Frederick 20678 | (410) 535-7355 |