
The average U.S. president’s surname ranks as the 6,298th most common surname in the United States
According to NameCensus these are US Presidents’ surnames and where they rank by how common they are in United States
Washington 148
Adams 43
Jefferson 615
Madison 1272
Monroe 618
Adams 43
Jackson 20
Van Buren 4463
Harrison 146
Tyler 528
Polk 1345
Taylor 17
Fillmore 7383
Pierce 213
Buchanan 511
Lincoln 2230
Johnson 2
Grant 196
Hayes 133
Garfield 7741
Arthur 1264
Cleveland 1151
Harrison 146
Cleveland 1151
McKinley 1513
Roosevelt 27027
Taft 3989
Wilson 14
Harding 899
Coolidge 10758
Hoover 580
Roosevelt 27027
Truman 6255
Eisenhower 25641
Kennedy 149
Johnson 2
Nixon 958
Ford 140
Carter 50
Reagan 2331
Bush 393
Clinton 2274
Bush 393
Obama 135344
That is 277,116 numbers ÷ 44 which gives you 6298
Truman’s surname is the closest to the average U.S. president’s surname frequency, ranking 6255 just 43 places from the overall average rank of 6298
Obama’s surname being so uncommon really played a big role in the average surname rank number. Without Obama the surname rank drops from 6298 to 3297 since Obama’s Surname alone(135344) accounts for 48% of the total(277116)