Stephanie Chen, former Writer-Producer for CNN, stated in her Aug. 28, 2009 article titled "'John Schools' Try to Change Attitudes about Paid Sex":

“No comprehensive effort has been made to track the numbers, but experts estimate 1 million to 2 million prostitutes work in the United States. The FBI’s 2007 Uniform Crime Report lists about 78,000 arrests for prostitution and commercialized vice, but experts say those numbers are extremely conservative because many sex workers and johns aren’t caught.”

Aug. 28, 2009