The exact number of people named Shelby in the world is not known, as name data is not collected on a global scale. However, according to 2010 United States Census data, there were approximately 198,806 people named Shelby in the United States. This number includes both males and females. Shelby is a relatively common name in the United States, ranking 300th for males and 245th for females in terms of popularity. It is possible that the number of people named Shelby in the world could be several times higher than the figure for the United States, as there are many other countries where Shelby is also used as a given name.