Phoenix is the sixth most populous city in the United States according to the 2010 United States Census, with a population of 1,445,632, making it the most populous state capital in the United States. Phoenix's ranking as the sixth most populous city was a drop from the number five position it had held since the U. S. Census Bureau released population estimates on June 28, 2007. Those statistics used data from 2006, which showed Phoenix's population at 1,512,986, which put it just ahead of Philadelphia.
After leading the nation in population growth for over a decade, the sub-prime mortgage crisis, followed by the recession, led to a slowing in the growth of Phoenix. There were approximately 77,000 people added to the population of the Phoenix metropolitan area in 2009, which was down significantly from its peak in 2006 of 162,000. Despite this slowing, Phoenix's population grew by 9.4% since the 2000 census (a total of 124,000 people), while the entire Phoenix metropolitan area grew by 28.9% during the same period. This compares with an overall growth rate nationally during the same time frame of 9.7%. Not since 1940–50, when the city had a population of 107,000, had the city gained less than 124,000 in a decade. Phoenix's recent growth rate of 9.4% from the 2010 census is the first time it has recorded a growth rate under 24% in a census decade.