The surname Mullins is of Irish origin, and is akin to Mullen and McMillan.
At the time of the United Kingdom Census of 1901 (the data for Ireland) and the United Kingdom Census of 1881 (the data for the rest of the United Kingdom), the frequency of the surname Mullins was highest in the following counties:[1] As of 2014, the frequency of the surname was highest in the following countries and territories:[1] As of 2014, 76.7% of all known bearers of the surname Mullins were residents of the United States.
The frequency of the surname was higher than national average in the following U.S. states:[1] The frequency of the surname was highest in the following U.S. counties (over 20 times the national average): With the single exception of Franklin County, Mississippi, these are all Appalachian counties.