Shannon is a small unincorporated place in Jefferson County, Alabama. It is located in the center of Birmingham and northwestern Hoover. Shannon geography coordinates at 33°24′19″N 86°52′19″W with an elevation of about 646 feet. In 1915, Shannon post office was established and started its operation. It is using Zip code 35142 and Area code 205. Shannon standard time is Central (CST) (UTC-6).