The following railroads operate in the U.S. state of Illinois.
A&R Terminal Railroad (ART)
AgRail (AGRL)
Ag Valley Railroad (AVRR)
Alton and Southern Railway (ALS)
Belt Railway of Chicago (BRC)
Bloomer Shippers Connecting Railroad (BLOL)
BNSF Railway (BNSF)
Burlington Junction Railway (BJRY) also operates City of Rochelle Railroad (CIR)
Canadian National Railway (CN) through subsidiaries Chicago Central and Pacific Railroad (CC), Elgin, Joliet and Eastern Railway (EJE), Grand Trunk Western Railroad (GTW), Illinois Central Railroad (IC), and Wisconsin Central Ltd. (WC)
Canadian Pacific Railway (CP) through subsidiaries Dakota, Minnesota and Eastern Railroad (DME) and Soo Line Railroad (SOO)
Chicago–Chemung Railroad (CCUO)
Chicago Heights Switching (CHSC)
Chicago Port Railroad (CPC)
Chicago Rail Link (CRL)
Chicago SouthShore and South Bend Railroad (CSS)
Chicago Terminal Railroad (CTM)
Cicero Central Railroad (CCER)
Crab Orchard and Egyptian Railroad (COER)
Coffeen and Western Railroad (CAEG)
CSX Transportation (CSXT) including subsidiary Baltimore and Ohio Chicago Terminal Railroad (BOCT)
Decatur Central Railroad
Decatur Junction Railway (DT)
Eastern Illinois Railroad (EIRC)
Effingham Railroad (EFRR)
Evansville Western Railway (EVWR)
FFG&C Railroad (FFGC)
Illinois Railway (IR)
Illinois and Midland Railroad (IMRR)
Illinois Western Railroad (ILW)
Indiana Rail Road (INRD)
Indiana Harbor Belt Railroad (IHB)
Iowa Interstate Railroad (IAIS) operates Lincoln and Southern Railroad
Joppa and Eastern Railroad (JE)
Kankakee, Beaverville and Southern Railroad (KBSR)
Kansas City Southern Railway (KCS) including subsidiary Gateway Eastern Railway (GWWE)
Keokuk Junction Railway (KJRY)
KM Railways (KMR)
Manufacturers' Junction Railway (MJ) (Out of Service)
Norfolk Southern Railway (NS)
Peru Industrial Railroad (PIRR)
Pioneer Industrial Railway (PRY)
Port Harbor Railroad (PHRR)
Riverport Railroad (RVPR)
Shawnee Terminal Railway (STR) (Out of Service)
South Chicago and Indiana Harbor Railway (SCIH)
Tazewell and Peoria Railroad (TZPR) operates Peoria and Pekin Union Railway (PPU)
Terminal Railroad Association of St. Louis (TRRA)
Toledo, Peoria and Western Railway (TPW)
Union Pacific Railroad (UP) including subsidiary Southern Illinois and Missouri Bridge Company
Vandalia Railroad (VRRC)
Vermilion Valley Railroad (VVRR) operates FNG Logistics Company (FNG)
Wisconsin and Southern Railroad (WSOR)
Kaskaskia Regional Port District (KKRX)
Mokena Illinois Railroad
Mars Candy
ADM Milling (ADMX)
Hoffman Transportation (HTCX)
Material Sciences Corporation
Buzzi Unicem
Bulkmatic Railroad
R Bult Rail Lines
Centerpoint Transportation, LLC
Operates the Joliet Terminal Railroad
Aux Sable Midstream
Great Lakes Basin Transportation
Crete Terminal Railroad
505 Railroad
Beecher Industrial Railway
Eastern Joliet Railway
Amtrak (AMTK)
Chicago Transit Authority
Fox River Trolley Museum (Aurora, Elgin and Fox River Electric)
Illinois Railway Museum
Metra
MetroLink
Monticello Railway Museum
Silver Creek and Stephenson Railroad
South Shore Line
Electric railways and predecessors
Aurora, Elgin and Chicago Railroad
Aurora, Elgin and Fox River Electric Company
Alton, Jacksonville and Peoria Railway
Bloomington, Pontiac and Joliet Electric Railway
Cairo and St. Louis Railway
Calumet and South Chicago Railway
Central Illinois Public Service Company
Centralia and Central City Traction Company
Chicago, Aurora and DeKalb Railroad
Chicago Aurora and Elgin Railroad
Chicago City Railway
Chicago and Desplaines Valley Electric Railway
Chicago General Railway
Chicago, Harvard and Geneva Lake Railway (CH&G)
Chicago and Joliet Electric Railway
Chicago, Lake Shore and South Bend Railway
Chicago and Milwaukee Electric Railroad
Chicago North Shore and Milwaukee Railroad
Chicago, Ottawa and Peoria Railway (CO&P)
Chicago South Shore and South Bend Railroad
Chicago and South Side Rapid Transit Railroad
Chicago and Southern Traction Company
Chicago Surface Lines
Chicago Tunnel Company
Chicago, Wheaton and Western Railway
Coal Belt Electric Railway
DeKalb – Sycamore and Interurban Traction Company
East St. Louis and Suburban Railway
Elgin, Aurora and Southern Traction Company
Elgin and Belvidere Electric Company
Fruit Growers Refrigerating and Power Company
Galesburg Railway and Light Company
Galesburg and Kewanee Electric Railway
Illinois Central Electric Railway
Illinois Traction, Inc. (ITS)
Illinois Valley Railway
Illinois Valley Traction Company
Joliet and Southern Traction Company
Kankakee and Western Electric Railway
Keokuk and Western Illinois Electric Company
Lake Street Elevated Railroad
Lee County Central Electric Railway
Macomb and Western Illinois Railway
Metropolitan West Side Elevated Railroad
Mississippi Valley Interurban Railway
Moline, East Moline and Watertown Railway
North Kankakee Electric Light and Railway Company
Northern Illinois Electric Railway
Northwestern Elevated Railroad
Peoples Traction Company
Peoria Railway
Peoria and Pekin Terminal Railway
Peoria and Pekin Traction Company
Peoria Railway Terminal Company
Rock Island Southern Railway (RIS)
Rockford, Beloit and Janesville Railroad
Rockford and Belvidere Electric Railway
Rockford and Interurban Railway
St. Louis and Belleville Electric Railway
South Side Elevated Railroad
Southern Traction Company of Illinois
Sterling, Dixon and Eastern Electric Railway
Suburban Railroad
Terre Haute, Indianapolis and Eastern Traction Company
Tri-City Railway
Union Consolidated Elevated Railway
Woodstock and Sycamore Traction Company
List of Illinois railroads Wikipedia (Text) CC BY-SA