The first name McAllister is of Scottish origin, derived from the surname McAlester, which means "son of Alexander". It has been used as a given name since the late 20th century and gained popularity in English-speaking countries like the United States and Canada during this time.
The name McAllister has seen a varied number of births over the years, ranging from a low of 5 to a high of 12. Despite some fluctuations, the annual count generally fluctuates between 5 and 9 births per year, with only two exceptions (12 in 2006 and 7 in 2023). The total number of births over this period is 70.