Office Supreme Court of the United States

Based on the US Supreme Court wiki that The Supreme Court of the United States is the highest federal court of the United States.
The following is the address of the US Supreme Court

Supreme Court of the United States

Address: 1 First Street, NE Washington DC 20543
Telephone: (+1) 202-479-3000
Tty: (+1) 202-479-3472
(Available Monday to Friday 9 am. to 5 pm. eastern)