<Table> <Tr> <Th_colspan="2"> Demographics of the United States </Th> </Tr> <Tr> <Th> Nationality </Th> <Td> American </Td> </Tr> <Tr> <Th_colspan="2"> Population </Th> </Tr> <Tr> <Th> Population </Th> <Td> 308,745,538 (2010) (3rd) </Td> </Tr> <Tr> <Th> Estimate </Th> <Td> 326,234,806 (2017) (3rd) </Td> </Tr> <Tr> <Th> Density </Th> <Td> 85.10 / sq mi (32.86 / km) </Td> </Tr> <Tr> <Th> Growth rate </Th> <Td> 0.81% (2016 est .) </Td> </Tr> <Tr> <Th> Birth rate </Th> <Td> 12.5 / 1,000 population </Td> </Tr> <Tr> <Th> Death rate </Th> <Td> 8.2 / 1,000 population </Td> </Tr> <Tr> <Th> Net migration rate </Th> <Td> 3.9 / 1,000 population </Td> </Tr> <Tr> <Th> Life expectancy </Th> <Td> 79.8 years </Td> </Tr> <Tr> <Th> Male </Th> <Td> 77.5 years </Td> </Tr> <Tr> <Th> Female </Th> <Td> 82.1 years </Td> </Tr> <Tr> <Th> Fertility rate </Th> <Td> 1.87 children born / woman </Td> </Tr> <Tr> <Th_colspan="2"> Languages </Th> </Tr> <Tr> <Th> Official </Th> <Td> None at the federal level English in 32 of the 50 states </Td> </Tr> <Tr> <Th> Spoken </Th> <Td> English 79% Spanish 13% Other Indo - European 3.7% Asian and Pacific island 3.4% Other 1% </Td> </Tr> <Tr> <Td_colspan="2"> Source: CIA World Factbook </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Demographics of the United States </Th> </Tr>

How many citizens are there in the us