Due to the lack of authoritative contemporary sources, estimates of the for dates prior to the first census in 1801 vary considerably. It has been suggested that even the 1801 Census may have left up to 250,000 people uncounted.
Some of the figures in this table are taken from that in the external link (marked #)
- 1066 - 1,100,0e="russel"/>
- 1350 - 2,500,000 just after the Black Death
- 1570 - 4,800,000
- 1603 - 5,800,000 at the end of the Tudor Period . # has 1630 for this figure
- 1700 - 6,500,000
- 1801 - 8,308,000 at the time of the first (one off) Census (probably underestimated) Census officials estimated at the time that there had been an increase of 77% in the preceding 100 years. In each county women were in the majority.Notes for 1801 taken from ''Kent 1800-1899 - A Chronicle of the Nineteenth Century'' Bob Ogley (Froglets Publications 2003) ISBN 1-872337-51-1
- 1811 - 9,496,000
- 1821 - 11,158,000
- 1831 - 12,993,000
- 1841 - 14,866,000 (beginning of regular censuses)
- 1851 - 16,769,400
- 1861 - 18,776,300
- 1871 - 21,298,000
- 1881 - 24,402,700
- 1891 - 27,230,200
- 1901 - 30,515,000
- 1911 - 33,651,600
First World War
- 1951 - 41,042,200
- 1961 - 43,983,300
- 1971 - 45,870,100
- 1981 - 46,623,500
- 1991 - 48,067,300
- 2001 - 49,138,831 National Statistics, 2001 Census
- 2005 - 50,431,700 National Statistics, UK population grows to more than 60m (2006-08-24)
- 2006 - 50,690,000
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