Alton
Alton, Granite & St. Louis Traction Co.

Alton
Alton, Jacksonville, & Peoria

Amboy
Northern Illinois Electric Railway

Aurora
Elgin, Aurora & Southern

Belleville
St. Louis & Belleville Electric Railway

Belvidere
Elgin & Belvidere Electric
Throughout its existance the "Dairy Route" could only boast of having three profitable years. During its lifetime it became the first interurban to have an automatic sub-station and in later years used lightwight one man cars. Also, its owner B. J. Arnold, purchased a surplus WW1 submarine engine to generate power at Marengo. Operation ceased on March 9, 1930. The cars sat at Marengo until the late '30's at which time they were cut  up for scrap. Today a
portion of the railroad is used by the Illinos Railway Museum.

Bloomington
Bloomington & Normal Railway, Electric & Heat Co.

Cairo
Cairo Electric & Traction Co.

Calumet
Calumet Electric Street Railway

Canton
Illinois Central Electric Railway

Centralia
Centralia & Central City Street Railway

Centralia
Centralia Traction Co.

Champaign
Illinois Power Co.

Champaign
University of Illinois

Champaign-Urbana
Illinois Power Co.

Chicago
Chicago & Interurban Traction/Chicago & Southern Traction Co.

Chicago
Chicago & Joliet Electric Railway

Chicago Heights
Chicago Heights Street Railway

Danville
Illinois Power Company

Decatur
Illinois Power Company

DeKalb
Chicago, Aurora & DeKalb

DeKalb
DeKalb-Sycamore Traction Co.

East St. Louis
East St. Louis & Suburban

East St. Louis
East St. Louis, Columbia & Waterloo

Freeport
Freeport Railway, Light & Power Company

Galesburg
Galesburg Railway Company

Harrisburg
Southern Illinois Railway & Power

Harvard
Chicago, Harvard & Geneva Lake

Jacksonville
Jacksonville Light & Power

Joliet
Aurora, Plainfield & Joliet/Joliet & Southern/Joliet & Eastern

Kankakee
Kankakee Electric Railway Co.

Kewanee
Galesburg & Kewanee ElectricRailway

Lincoln
Lincoln Street Railway

Marion
Coal Belt Electric Railway

Mattoon
Central Illinois Traction Co.

Monticello
Monticello & Sangamon Valley

Ottawa
Ottawa Electric Street Railway

Paris
Paris Traction Co.

Pekin
Pekin Municipal Railway

Peoria
Peoria trolley coaches are now here
Illinois Power Co.

Peoria
Peoria Railway & Terminal Co.

Pontiac
Bloomington, Pontiac & Joliet Electric Railway

Princeton
Chicago, Ottawa & Peoria

Quincy
Quincy Railway

Rock Island
Tri-City Railways

Rock Island
Rock Island Southern

Rockford
Rockford trolley coaches are now here
Rockford Public Service Inc.

Rockford
Rockford & Interurban Railway

Rockford
Rockford, Beloit & Janesville

Springfield
Illinois Power Co.

Sterling
Sterling, Dixon & Eastern

Taylorville
Taylorville Railway, Light, Heat & Power

Urbana
Kankakee & Urbana Traction Co.

Woodstock
Woodstock & Sycamore Traction Co.

Yorkville
Fox & Illinois Union