The address of the Chicago Symphony Orchestra is: , Chicago, IL 60604-2596
No, the Chicago Symphony Orchestra is a proper noun, the name of a specific orchestra. All words of a proper noun are capitalized.
Carmel Symphony Orchestra was created in 1976.
Dallas Symphony Orchestra was created in 1900.
Stavanger Symphony Orchestra was created in 1938.
Bern Symphony Orchestra was created in 1877.
Knoxville Symphony Orchestra was created in 1935.
BBC Symphony Orchestra was created in 1930.
Szeged Symphony Orchestra was created in 1969.
Sault Symphony Orchestra was created in 1956.
New Symphony Orchestra was created in 1991.
Richmond Symphony Orchestra was created in 1957.