Directory of Class III and regional railroads in the United States
670
Total Railroads
657
Short Lines
45
States
6
Class I
7
Class II
657
Short Line
670 railroads
| Mark | Railroad Name | Class | State(s) |
|---|---|---|---|
| NCSR | New Castle Southern Railroad | Short Line | |
| JCAX | New Century AirCenter Railroad | Short Line | |
| NECR | New England Central Railroad | Short Line | |
| NEGS | New England Southern Railroad | Short Line | |
| NHCR | New Hampshire Central Railroad | Short Line | |
| NHN | New Hampshire Northcoast Corporation | Short Line | |
| NHRR | New Hope and Ivyland Railroad | Short Line | |
| NJRC | New Jersey Rail Carriers, LLC | Short Line | |
| NJSL | New Jersey Seashore Lines | Short Line | |
| NOGC | New Orleans and Gulf Coast Railway | Short Line | |
| NOPB | New Orleans Public Belt Railroad | Short Line | |
| NYA | New York and Atlantic Railway | Short Line | |
| NYLE | New York and Lake Erie Railroad | Short Line | |
| NYOG | New York and Ogdensburg Railway | Short Line | |
| NYNJ | New York New Jersey Rail, LLC | Short Line | |
| NYSW | New York, Susquehanna and Western Railway | Short Line | |
| NSR | Newburgh and South Shore Railroad | Short Line | |
| NBER | Nittany and Bald Eagle Railroad | Short Line | |
| NPB | Norfolk and Portsmouth Belt Line Railroad | Short Line | |
| NS | Norfolk Southern Railway | Class I | |
| NCVA | North Carolina and Virginia Railroad | Short Line | |
| NLA | North Louisiana & Arkansas Railroad | Short Line | |
| NSHR | North Shore Railroad | Short Line | |
| NDCR | Northampton Switching Company | Short Line | |
| NETC | Northeast Texas Connector | Short Line | |
| NLR | Northern Lines Railway | Short Line | |
| NOW | Northern Ohio and Western Railway | Short Line | |
| NPR | Northern Plains Railroad | Short Line | |
| NOKL | Northwestern Oklahoma Railroad | Short Line | |
| OGRE | Oakland Global Rail Enterprise | Short Line | |
| ORC | Ogeechee Railway | Short Line | |
| OHCR | Ohio Central Railroad | Short Line | |
| OSCR | Ohio South Central Railroad | Short Line | |
| OSRR | Ohio Southern Railroad | Short Line | |
| OCTL | Oil Creek and Titusville Lines, Inc. | Short Line | |
| OAR | Old Augusta Railroad | Short Line | |
| OLYO | Olympia and Belmore Railroad | Short Line | |
| OLB | Omaha, Lincoln and Beatrice Railway | Short Line | |
| ONCT | Ontario Central Railroad | Short Line | |
| OMID | Ontario Midland Railroad | Short Line | |
| OPT | Orange Port Terminal Railway | Short Line | |
| OERR | Oregon Eastern Railroad | Short Line | |
| OIRR | Oregon Independence Railroad | Short Line | |
| OPR | Oregon Pacific Railroad | Short Line | |
| ONR | Ottawa Northern Railroad | Short Line | |
| OTVR | Otter Tail Valley Railroad | Short Line | |
| OUCH | Ouachita Railroad | Short Line | |
| OVRR | Ozark Valley Railroad | Short Line | |
| PHL | Pacific Harbor Line, Inc. | Short Line | |
| PAL | Paducah and Louisville Railway | Class II |
Source: Wikipedia "List of United States railroads". 670 railroads indexed.