Historical Statistics of the United States Millennial Edition Online

			Aa1	Aa2	Aa3	Aa4	Aa5
			Land area	Population		Population increase from previous census
			Total	Per square mile	Number	Percentage
Row	Date		Square miles	Number	Number	Number	Percent
1	Aug 2, 1790		864,746	3,929,625	4.5	----	----
2	Aug 4, 1800		864,746	5,308,483	6.1	1,378,858	35.1
3	Aug 6, 1810		1,681,828	7,239,881	4.3	1,931,398	36.4
4	Aug 7, 1820		1,749,462	9,638,453	5.5	2,398,572	33.1
5	June 1, 1830		1,749,462	12,866,020	7.4	3,227,567	33.5

6	June 1, 1840		1,749,462	17,069,453	9.8	4,203,433	32.7
7	June 1, 1850		2,940,042	23,191,876	7.9	6,122,423	35.9
8	June 1, 1860		2,969,640	31,443,321	10.6	8,251,445	35.6
9	June 1, 1870	¹	2,969,640	38,558,371	13.0	7,115,050	22.6
10	June 1, 1880		2,969,640	50,155,783	16.9	11,597,412	30.1

11	June 1, 1890		2,969,640	62,947,714	21.2	12,791,931	25.5
12	June 1, 1900		2,969,834	75,994,575	25.6	13,046,861	20.7
13	Apr 15, 1910		2,969,565	91,972,266	31.0	15,977,691	21.0
14	Jan 1, 1920		2,969,451	105,710,620	35.6	13,738,354	14.9
15	Apr 1, 1930		2,977,128	122,775,046	41.2	17,064,426	16.1

16	Apr 1, 1940		2,977,128	131,669,275	44.2	8,894,229	7.2
17	Apr 1, 1950		2,974,726	150,697,361	50.7	19,028,086	14.5
18	Apr 1, 1960		3,540,911	179,323,175	50.6	28,625,814	19.0
19	Apr 1, 1970	²	3,540,023	203,211,926	57.4	23,888,751	13.3
20	Apr 1, 1980	³	3,539,289	226,545,805	64.0	23,333,879	11.5

21	Apr 1, 1990	⁴	3,536,278	248,709,873	70.3	22,164,068	9.8
22	Apr 1, 2000	⁵	3,537,438	281,422,426	79.6	32,704,124	13.2