Pecan Gap is a city mostly in Delta and expands into Fannin Counties within the U.S. state of Texas. It is sometimes informally referred to as The Gap by the residents of both the town and its immediate surrounding area. The population was 203 at the time of the 2010 census. It is named for the gap between two pecan trees, but unfortunately one of the two pecan trees was destroyed by a tornado in 1963.