
To assist those scanner radio enthusiasts who monitor Route 3, this mile marker directory should assist you in determining which support agencies (Police, Fire, EMS) to monitor, should only a mile marker be given as the location.
| Mile Marker | Municipality | County |
| 0.0 - 4.9 | Clifton | Passaic |
| 4.9 - 6.8 | Rutherford | Bergen |
| 6.8 - 8.5 | East Rutherford | Bergen |
| 8.5 - 10.2 | Secaucus | Hudson |
| 10.2 - 10.8 | North Bergen | Hudson |