Because more people have that surname than any other surname.
The most common surname in the US is Smith.
In 2005 the most common male name was James, and the most common female name was Mary, and the most common surname was Smith.
According to the 2000 US Census, Smith is the most common surname. Smith2,376,206Johnson1,857,160Williams1,534,042Brown1,380,145Jones1,362,755Miller1,127,803Davis1,072,335Garcia858,289Rodriguez804,240Wilson783,051
Smith is the most common.
smith
According to the 1990 Census of the US:* The most common last name is Smith * The most common boy's name is James * The most common girl's name is MaryFirst name: James Last name: Smith
I believe that Smith is.
That would be "Smith".
Unofficially, there are over 8,600 persons currently living in the US with the Stillwell surname. It is the 4,464th most popular surname. Unfortunately, worldwide statistics are unavailable.
According to the 1990 census, the most common surname in the United States is Smith. Click on the 'Most Common Surnames in the US' link on this page to see a list of the 1000 most common surnames in the United States.
No- Unofficially of course, there are only about 2,500 people in the US with the surname of Cowling.
Unofficially, there are over 20,400 persons in the US with the surname Anaya.