Martha MacCallum's husband is Daniel Gregory. MacCallum and Gregory have been married to one another since 1992. The couple was married by Rev. Joseph Fitzpatrick in a Roman Catholic ceremony performed at St. Elizabeth's Church in Wyckoff, New Jersey.
Although there were rumors of divorce in 2014, MacCallum and Gregory are still married. As of 2015, they live together in Ridgewood, New Jersey, along with their three children.
MacCallum currently serves as a co-host on America's Newsroom with Bill Hemmer. MacCallum has been working for Fox News Channel since 2004. Before joining Fox News Channel, MacCallum anchored for a sports and business television station in New York and was a business correspondent for Wall Street Journal Television.