<Tr> <Td> 5 </Td> <Td> 1830 </Td> <Td> June 1, 1830 </Td> <Td> 12,866,020 </Td> <Td> </Td> </Tr> <Tr> <Td> 6 </Td> <Td> 1840 </Td> <Td> June 1, 1840 </Td> <Td> 17,069,453 </Td> <Td> The census estimated the population of the United States at 17,100,000 . The results were tabulated by 28 clerks in the Bureau of the Census . </Td> </Tr> <Tr> <Td> 7 </Td> <Td> 1850 </Td> <Td> June 1, 1850 </Td> <Td> 23,191,876 </Td> <Td> The 1850 census was a landmark year in American census - taking . It was the first year in which the census bureau attempted to record every member of every household, including women, children and slaves . Accordingly, the first slave schedules were produced in 1850 . Prior to 1850, census records had only recorded the name of the head of the household and tabulated the other household members within given age groups . </Td> </Tr> <Tr> <Td> 8 </Td> <Td> 1860 </Td> <Td> June 1, 1860 </Td> <Td> 31,443,321 </Td> <Td> The results were tabulated by 184 clerks in the Bureau of the Census . This was the first census where the American Indians officially were counted, but only those who had' renounced tribal rules' . The figure for the nation was 40,000 . </Td> </Tr>

According to a census in 1920 for the first time in american history most