He is an American nationality and of white ethnicity. He has worked at Fox's Chicago, New York City, San Francisco, and bureaus. Gallagher was co-anchor of “The Live Desk” with Martha MacCallum, as a general assignment correspondent and substitute anchor for Studio B and Fox Report, at that time he reported on 2004 Southeast Asian tsunami and the Space Shuttle Columbia disaster." The Live Desk" is an American News and talk program that broadcasted on the "Fox News Channel", but it was canceled and replaced with America Live with Megyn Kelly. He is married to Tracy Holmes Gallagher. The couple has two kids including a 4-years-old daughter and 3-years-old daughter together. Currently, Gallagher is at the age of 54 and still looks handsome with his perfect height of 6 feet and white complexion. Gallagher is equally active on social sites and his estimated net worth is around U.S $1.5 million dollars.