314-621-6960 is the Phone # of Laclede Gas Oct 22, 2014 by Crystal Lombardo The Owner of the Phone Number 314-621-6960 Is: Laclede Gas. This is a company that is based in Saint Louis, Missouri. Their offices are located on 720 Olive Street Lbby. Here is some more information on the Laclede Gas. Type of Business: Building Materials & Supplies Location of their Headquarters Physical Address: 720 Olive Street Lbby Zipcode: 63101 City and State: Saint Louis, Missouri Country: United States Phone Number: 314-621-6960 / 3146216960