About 700 railroads operate common carrier freight service in the United States. There are about of railroad track in the United States, nearly all standard gauge.
Reporting marks are listed in parentheses.Railinc, Search MARKs , accessed February 2009
A&R Terminal Railroad (ART) Aberdeen and Rockfish Railroad (AR) Aberdeen, Carolina and Western Railway (ACWR) Acadiana Railway (AKDN) Adams-Warnock Railway (AWRY) Adrian and Blissfield Rail Road (ADBF) Affton Terminal Services Railroad (AT) Ag Valley Railroad (AVRR) Aiken Railway (AIKR) Akron Barberton Cluster Railway (AB) Alabama and Gulf Coast Railway (AGR) (GWI) Alabama and Tennessee River Railway (ATN) (OmniTRAX) Alabama Export Railroad (ALE) Alabama Southern Railroad (ABS) Alabama Warrior Railway (ABWR) Alamo Gulf Coast Railroad (AGCR) Alamo North Texas Railroad (ANTX) Alaska Railroad (ARR) Albany and Eastern Railroad (AERC) Albany Port Railroad (APD) Alexander Railroad (ARC) Aliquippa and Ohio River Railroad (AOR) Allegheny Valley Railroad (AVR) Allentown and Auburn Railroad (ALLN) Alton and Southern Railway (ALS) AN Railway (AN) Angelina and Neches River Railroad (ANR) Ann Arbor Railroad (AA) Apache Railway (APA) Appalachian and Ohio Railroad (AO) Arcade and Attica Railroad (ARA) Arizona and California Railroad (ARZC) Arizona Central Railroad (AZCR) Arizona Eastern Railway (AZER) Arkansas–Oklahoma Railroad (AOK) Arkansas and Missouri Railroad (AM) Arkansas Midland Railroad (AKMD) (GWI) Arkansas Southern Railroad (ARS) (Watco) Arkansas, Louisiana and Mississippi Railroad (ALM) (GWI) Ashland Railway (ASRY) Ashtabula, Carson and Jefferson Railroad (ACJR) AT&L Railroad (ATLT) Atlantic and Western Railway (ATW) (GWI) Atlantic Railways (ATL) Austin Western Railroad (AWRR) (Watco) Autauga Northern Railroad (AUT) (Watco) B&H Rail Corporation (BH) Baja California Railroad (BJRR) Ballard Terminal Railroad (BDTL) Baton Rouge Southern Railroad (BRS) (Watco) Batten Kill Railroad (BKRR) Bauxite and Northern Railway (BXN) (GWI) Bay Colony Railroad (BCLR) Bay Line Railroad (BAYL) (GWI) Bayway Terminal Switching Company (BAWT) Beech Mountain Railroad (BEEM) Bee Line Railroad (BLEX) Bellingham International Railroad (BIRR) Belt Railway of Chicago (BRC) Belvidere and Delaware River Railway (BDRV) Bessemer and Lake Erie Railroad (BLE) BG&CM Railroad (BGCM) Big 4 Terminal Railroad (BFT) Big Spring Rail System (BSR) Bighorn Divide and Wyoming Railroad (BDW) Birmingham Terminal Railway (BHRR) Belpre Industrial Parkersburg Railroad (BIP) Black River and Western Corporation (BRW) Blacklands Railroad (BLR) Blackwell Northern Gateway Railroad (BNG) Bloomer Line (BLOL) Blue Rapids Railway (BLRR) Blue Ridge Southern Railroad (BLU) BNSF Railway (BNSF) Bogalusa & Northern Railway (BNR) Boise Valley Railroad (BVRR) Boone and Scenic Valley Railroad (BSVY) Border Pacific Railroad (BOP) Brandywine Valley Railroad (BVRY) Branford Steam Railroad (BRFD) Bridgeport Switching Company (BPSC) Brownsville and Rio Grande International Railroad (BRG) Buckingham Branch Railroad (BB) Bucyrus Industrial Railroad (BIR) Buffalo and Pittsburgh Railroad (BPRR) Buffalo Southern Railroad (BSOR) Burlington Junction Railway (BJRY) Burns Harbor Shortline Railroad (BHS) Butte, Anaconda and Pacific Railway (BAP) Caldwell County Railroad (CWCY) California Northern Railroad (CFNR) Camden and Southern Railroad (CSR) Camp Chase Railway (CAMY) Canadian National Railway (CN) Caney Fork and Western Railroad (CFWR) Canton Railroad (CTN) Cape Fear Railways (CF) Cape May Seashore Lines (CMSL) Carolina Coastal Railway (CLNA) Carolina Piedmont Railroad (CPDR) Cascade and Columbia River Railroad (CSCD) CaterParrott Railnet (CPR) Cedar Rapids and Iowa City Railway (CIC) Central California Traction Company (CCT) Central Indiana and Western Railroad (CEIW) Central Montana Rail, Inc. (CM) Central New England Railroad (CNZR) Central New York Railroad (CNYK) Central Oregon and Pacific Railroad (CORP) Central Railroad of Indiana (CIND) (GWRR) Central Railroad of Indianapolis (CERA) Central Washington Railroad (CWRR) CGB Shortline Railroad (CGRX) CG Railway (CGR) Charlotte Southern Railroad (CHS) Charlotte Western Railroad (CER) Chattahoochee Industrial Railroad (CIRR) Chattooga and Chickamauga Railway (CCKY) Chesapeake and Albemarle Railroad (CA) Chesapeake and Indiana Railroad (CKIN) Chessie Logistics (CLCY) Chestnut Ridge Railroad (CHR) Chicago–Chemung Railroad (CCUO) Chicago Junction Railway (CJRY) Chicago Port & Rail (CPRL) Chicago Port Railroad (CPC) Chicago Rail Link (CRL) Chicago South Shore and South Bend Railroad (CSS) Chicago, Fort Wayne and Eastern Railroad (CFE) Chicago, St. Paul & Pacific Railroad (CSP) Cicero Central Railroad (CECR) Cimarron Valley Railroad (CVR) Cincinnati Eastern Railroad (CCET) City of Prineville Railway (COP) Clackamas Valley Railroad (CVLY) Clarendon and Pittsford Railroad (CLP) Cleveland and Cuyahoga Railroad (CCRL) Cleveland Port Railroad (CHB) Cleveland Terminal & Valley Railroad (CTV) Cleveland Works Railway (CWRO) Clinton Terminal Railroad (CTR) Cloquet Terminal Railroad (CTRR) CMC Railroad (CMC) Colorado Pacific Railroad (CXR) Colorado Pacific Rio Grande Railroad (CXRG) Coffeen and Western Railroad (CAEG) Colorado and Wyoming Railway (CW) Columbia and Cowlitz Railway (CLC) Columbia Basin Railroad (CBRW) Columbia Shipyards Railroad (CSBP) Columbia Terminal Railroad (CT) Columbia-Walla Walla Railway (CWW) Columbus and Chattahoochee Railroad (CCH) Columbus and Greenville Railway (CAGY) Columbus and Ohio River Rail Road (CUOH) Commonwealth Railway (CWRY) Conecuh Valley Railroad (COEH) Connecticut Southern Railroad (CSOR) Coopersville and Marne Railway (CPMY) Coos Bay Rail Link (CBRL) Copper Basin Railway (CBRY) Cornhusker Railroad (CNRR) CPKC Railway (CPKC) Crab Orchard and Egyptian Railway (COER) CSX Transportation (CSXT) D&I Railroad (DAIR) D&W Railroad (DWRV) Dakota Northern Railroad (DN) Dakota Southern Railway (DSRC) Dakota, Missouri Valley and Western Railroad (DMVW) Dallas, Garland and Northeastern Railroad (DGNO) Dardanelle and Russellville Railroad (DR) Davenport Industrial Railroad (DIR) De Queen and Eastern Railroad (DQE) Decatur & Eastern Illinois Railroad (DREI) Decatur Junction Railway (DT) Delaware and Raritan River Railroad (DRRR) Delaware–Lackawanna Railroad (DL) Delray Connecting Railroad (DC) Delmarva Central Railroad (DCR) Delta Southern Railroad (DSRR) Delta Valley and Southern Railway (DVS) Denver Rock Island Railroad (DRIR) Depew, Lancaster and Western Railroad (DLWR) Deseret Power Railroad (DPRW) Detroit Connecting Railroad (DCON) DFW & Southern Railway (DFWS) Dover and Delaware River Railroad (DD) Dover & Rockaway River Railroad (DRRV) Drake Switching Company (DSC) Dubois County Railroad (DCRR) Dutchtown Southern Railroad (DUSR) East Brookfield and Spencer Railroad (EBSR) East Camden and Highland Railroad (EACH) East Chicago Rail Terminal (ECRT) East Cooper and Berkeley Railroad (ECBR) East Erie Commercial Railroad (EEC) East Jersey Railroad (EJR) East Ohio Valley Railway (EOVR) East Penn Railroad (ESPN) East Tennessee Railway (ETRY) East Terminal Railway (ECTR) East Troy Electric Railroad (METW) Eastern Alabama Railway (EARY) Eastern Idaho Railroad (EIRR) Eastern Kentucky Railway Company (EKRC) Eastern Maine Railway (EMRY) Effingham Railroad (EFRR) El Dorado and Wesson Railway (EDW) Elizabethtown Industrial Railroad (EZR) Elkhart and Western Railroad (EWR) Ellis and Eastern Company (EE) Elwood, Joliet & Southern Railroad (EJSR) Escanaba and Lake Superior Railroad (ELS) Evansville Western Railway (EVWR) Everett Railroad (EV) Fairfield Southern Company (FS) Falls Road Railroad (FRR) Farmrail Corporation (FMRC) FFG&C Railroad (FFGC) Finger Lakes Railway (FGLK) First Coast Railroad (FCRD) Flats Industrial Railroad (FIR) Florida Central Railroad (FCEN) Florida East Coast Railway (FEC) Florida Gulf & Atlantic Railroad (FGAR) Florida Midland Railroad (FMID) Florida Northern Railroad (FNOR) Fore River Transportation Corporation (FRVT) Fort Smith Railroad (FSR) Fort Worth and Western Railroad (FWWR) Fox Valley & Lake Superior Rail System (FOXY) Fredonia Valley Railroad (FVRR) Fulton County Railroad (FC) Fulton County Railway (FCR) Galveston Railroad (GVSR) Garden City Western Railway (GCW) Gardendale Railroad (GRD) Gary Railway (GRW) Gateway Industrial Railroad (GIRR) Geaux Geaux Railroad (GOGR) Georgetown Railroad (GRR) Georgia and Florida Railway (GFRR) Georgia Central Railway (GC) Georgia Northeastern Railroad (GNRR) Georgia Southern Railway (GS) Georgia Southwestern Railroad (GSWR) Georgia Woodlands Railroad (GWRC) Gettysburg and Northern Railroad (GET) GG Railroad (GGRR) Golden Isles Terminal Railroad (GITM) Golden Triangle Railroad (GTRA) Goose Lake Railway (GLRY) Grafton and Upton Railroad (GU) Grainbelt Corporation (GNBC) Grand Elk Railroad (GDLK) Grand Rapids Eastern Railroad (GR) Grand River Railway (GRRL) Great Basin & Northern Railroad (GBN) Great Lakes Central Railroad (GLC) Great Northwest Railroad (GRNW) Great Walton Railroad (GRWR) Great Western Railway of Colorado (GWR) Green Mountain Railroad (GMRC) Greenville and Western Railway (GRLW) Grenada Railway (GRYR) Gulf & Ship Island Railroad (GSIR) Gulf Coast Switching (GCSX) Hainesport Secondary Railroad (HSCR) Hamilton Northwestern Railroad (HNW) Hampton and Branchville Railroad (HB) Hartwell Railroad (HRT) Heart of Georgia Railroad (HOG) Heritage Railroad (HR) Herrin Railroad (HRRL) Hilton & Albany Railroad (HAL) Hondo Railway (HRR) Hood River Railroad (DBA Mount Hood Railroad) (MH) Hoosier Southern Railroad (HOS) Housatonic Railroad (HRRC) Huntsville and Madison County Railroad Authority (HMCR) Huron and Eastern Railway (HESR) Hussey Terminal Railroad (HTRC) Idaho Northern and Pacific Railroad (INPR) Illinois and Midland Railroad (IMRR) Illinois Railway (IR) Illinois Western Railroad (ILW) Indiana and Ohio Railway (IORY) Indiana Eastern Railroad (IERR) Indiana Harbor Belt Railroad (IHB) Indiana Northeastern Railroad (IN) Indiana Rail Road (INRD) Indiana Southern Railroad (ISRR) Indiana Southwestern Railway (ISW) Illinois Terminal Belt Railroad (ITB) Iowa Interstate Railroad (IAIS) Iowa Northern Railway (IANR) Iowa River Railroad (IARR) Iowa Southern Railway (ISRY) Iowa Traction Railroad (IATR) Itawamba Mississippian Railway (IMR) Ithaca Central Railroad (ITHR) Jackson & Lansing Railroad (JAIL) Jacksonville Port Terminal Railroad (JXPT) Joppa and Eastern Railroad (JE) Juniata Valley Railroad (JVRR) Kanawha River Railroad (KNWA) Kankakee, Beaverville and Southern Railroad (KBSR) Kansas and Oklahoma Railroad (KO) Kansas City Transportation Lines (KCTL) Kaw River Railroad (KAW) Kendallville Terminal Railway (KTR) Kennewick Terminal Railroad (KET) Kentucky and Tennessee Railway (KT) Keokuk Junction Railway (KJRY) Kiamichi Railroad (KRR) Kingman Terminal Railroad (KGTR) Kinston Railroad (KR) Klamath Northern Railway (KNOR) KM Railways (KM) Knoxville and Cumberland Gap Railroad (KXCG) Knoxville and Holston River Railroad (KXHR) KS Railroad (KSRR) KWT Railway (KWT) Kyle Railroad (KYLE) Lake Michigan and Indiana Railroad (LMIC) Lake State Railway (LSRC) Lake Superior and Ishpeming Railroad (LSI) Lake Terminal Railroad (LT) Lancaster and Chester Railway (LC) LVR Railroad (LVR) Lapeer Industrial Railroad (LIRR) LaSalle Railway (LSRY) Laurinburg and Southern Railroad (LRS) Lehigh Valley Rail Management (LVRM) Little Kanawha River Railroad (LKRR) Little Rock and Western Railway (LRWN) Little Rock Port Authority Railroad (LRPA) Live Oak Railroad (LOR) Livonia, Avon and Lakeville Railroad (LAL) Longview Switching Company (LVSW) Louisiana and Delta Railroad (LDRR) Louisiana and North West Railroad (LNW) Louisiana Southern Railroad (LAS) Louisville and Indiana Railroad (LIRC) Lubbock and Western Railway (LBWR) Lucas Oil Rail Lines (LORL) Luxapalila Valley Railroad (LXVR) Lycoming Valley Railroad (LVRR) M&B Railroad (MNBR) Madison Railroad (CMPA) Mahoning Valley Railway (MVRY)