| Train Dispatchers American Train Dispatchers | | Cleveland, OH | 2,718 |
| Train Dispatchers System Committee | Burlington Northern Rr | Fort Worth, TX | 572 |
| Train Dispatchers System Committee | Csxt | Jacksonville, FL | 307 |
| Train Dispatchers System Committee | Amtrak | Bronx, NY | 189 |
| Train Dispatchers System Committee | Louisiana & Arkansas Rr | Cameron, MO | 86 |
| Train Dispatchers System Committee | | Chicago, IL | 83 |
| Train Dispatchers System Committee | Gca Csxt-east System Committee | Mechanicville, NY | 73 |
| Train Dispatchers System Committee | Scom Mbcr | Barre, MA | 69 |
| Train Dispatchers System Committee | Kiamichi System Committee | Powderly, TX | 52 |
| Train Dispatchers System Committee | New Jersey Rail Transit | Pompton Plains, NJ | 43 |
| Train Dispatchers System Committee | Norfolk & Western Railway | Decatur, IL | 41 |
| Train Dispatchers System Committee | Mrl | Lolo, MT | 36 |
| Train Dispatchers System Committee | Northeast Illinois Regional Commute | Alsip, IL | 34 |
| Train Dispatchers System Committee | Soo Line | Eagan, MN | 29 |
| Train Dispatchers System Committee | Indiana Harbor Belt Rr System Comm | Demotte, IN | 20 |
| Train Dispatchers System Committee | Indiana Harbor Belt Railway | Chesterton, IN | 17 |
| Train Dispatchers System Committee | Conrail System | Whiting, NJ | 15 |
| Train Dispatchers System Committee | N J Transit Power Supervisors | Wanaque, NJ | 15 |
| Train Dispatchers System Committee | Grand Trunk Western Rr | Waterford, MI | 14 |
| Train Dispatchers System Committee | Chicago South Shore-south Bend | Laporte, IN | 9 |
| Train Dispatchers System Committee | Terminal Rr Asn Of Saint Louis | Wood River, IL | 9 |
| Train Dispatchers System Committee | Norfolk Southern | Lilburn, GA | 9 |
| Train Dispatchers System Committee | Sunrail System Committe | Orange City, FL | 9 |
| Train Dispatchers System Committee | Belt Rr Of Chicago | Frankfort, IL | 8 |
| Train Dispatchers System Committee | Louisville And Indiana Railroad System Commitee | Jeffersonville, IN | 8 |
| Train Dispatchers System Committee | Alaska Rr | Anchorage, AK | 7 |
| Train Dispatchers System Committee | Tri Rail System Committee Atda | Homestead, FL | 7 |
| Train Dispatchers System Committee | Peoria & Pekin Union Railroad | Creve Coeur, IL | 5 |
| Train Dispatchers System Committee | Southern Railway Co | Morris, AL | 0 |
| Train Dispatchers System Committee | Duluth Missabe & Iron Range | Cleveland, OH | 0 |
| Train Dispatchers System Committee | New York Chicago & St Louis Rr | North Huntington, PA | 0 |
| Train Dispatchers System Committee | Trans-hudson Port Authority | Red Bank, NJ | 0 |
