Population of the United States

Year

Number of States

Population

% Increase

Population per Square Mile

1790

13

3,929,214

4.5

1800

16

5,308,483

35.1

6.1

1810

17

7,239,881

36.4

4.3

1820

23

9,638,453

33.1

5.5

1830

24

12,866,020

33.5

7.4

1840

26

17,069,453

32.7

9.8

1850

31

23,191,876

35.9

7.9

1860

33

31,443,321

35.6

10.6

1870

37

39,818,449

26.6

13.4

1880

38

50,155,783

26.0

16.9

1890

44

62,947,714

25.5

21.1

1900

45

75,994,575

20.7

25.6

1910

46

91,972,266

21.0

31.0

1920

48

105,710,620

14.9

35.6

1930

48

122,775,046

16.1

41.2

1940

48

131,669,275

7.2

44.2

1950

48

150,697,361

14.5

50.7

1960

50

179,323,175

19.0

50.6

1970

50

203,235,298

13.3

57.5

1980

50

226,504,825

11.4

64.0

1985

50

237,839,000

5.0

67.2

1990

50

250,122,000

5.2

70.6

1995

50

263,411,707

5.3

74.4

2000

50

281,421,906

6.8

77.0

2005

50

296,410,404

5.3

81.7

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