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Administrative County of London.
REPORT OF THE MEDICAL OFFICER OF HEALTH.
1900.
PART I.
Population.
The population of the administrative County of London estimated to the middle of the year
1900 was 4,526,700.
The estimates of the population of London quoted in my previous reports for the years
1896-1899 were based on the assumption that the increase between the two census years 1891 and
1896 had been since maintained. The enumeration of the London population at the recent census
of 1901 enables a more accurate estimate of the population for the middle of each of the years
1896 to 1900 to be made. The following results are thus obtained, the figures based on the
enumerations of 1891 and 1896 are shown for the purpose of comparison—

It will thus be seen that owing to the diminished rate of increase in the population between
1896 and 1901, the estimates based on the enumerations of 1891 and 1896 are in excess of those
based upon the enumerations of 1896 and 1901.

It will thus be seen that the rate of increase in the population has declined from 21.3 per
cent. in 1841-51 to 7.3 per cent. in 1891-1901. The natural increase in the London population in
the period 1891-1900 (i.e., the excess of births over deaths) was 490,518, while the actual increase
in the population as shown by the census of 1901 was only 311,318. The loss of population by the
excess of emigration over immigration was, therefore, 179,200.
The following table shows the proportion of the London population at the several ages in
each census year since 1851—