(Toledo, OH) While aimlessly drifting on the Internet I found an interesting site that ranks the popularity of first and last names.
Name Statistics allows you to find out the relative rankings of your names, and also provides an estimate of how many other people in the US share the same name as you.
"Michael" is the #4 most common male name, while only the #799th most common female name. "Brooks" is the #73 most common last name, and approximately 257,500 US last names are "Brooks." This translates into 0.103% of the US population - at least, the percentage of the US population that uses last names, unlike Cher, Madonna, and Prince.
Have fun with this site for mostly-useless trivia.