Clarified Auditing Standards require quantification of materiality levels, which are estimates to guide auditors' decision-making and design of auditing procedures. This estimate is only a guide and is not a specific determination of what is, and is not, material in an audit.
1 The current population of the United States of America is 324,385,585 as of Friday, August 12, 2016, based on the latest United Nations estimates.  the United States population is equivalent to 4.38% of the total world population.
Overall, the population of the United States has grown more than 9% to 307,006,550 since the 2000 census. The population grew 0.86% since last year's estimates. These figures are an advance look at what to expect when the 2010 census results are released in December.