| Business | Phone |
| Bord Of Selectmen's 30 Martin St, Essex 1929 | (978) 768-6531 |
| Essex Ambulance 24 Martin St, Essex 1929 | (978) 768-6363 |
| Essex Counsel On Aging/Sctng 17 Pickering St, Essex 1929 | (978) 768-7932 |
| Essex Shell Fish Dept Essex 1929 | (978) 768-3915 |
| Essex Town Accountant 30 Martin St, Essex 1929 | (978) 768-6980 |
| Essex Town Health Board 30 Martin St, Essex 1929 | (978) 768-7614 |
| Essex Youth Dept 26 Martin St, Essex 1929 | (978) 768-3414 |
| Filtration Plant 44 Centennial Grove Rd, Essex 1929 | (978) 768-6431 |