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12
The number of persons per acre for the whole of the Borough
is 12.9 compared with the corresponding figure of 9.9 for 1921.
The number of persons per acre in the various Wards varies from
70.7 in the Grosvenor Ward to 1.5 in the Northolt Ward and gives
an indication as to where future development is to be expected.
While the figures given in the Census report of the RegistrarGeneral
are of much interest, their main value lies in the comparisons
that can be made between the present figures and those
of the previous Census. Unfortunately, in many of the tables
in the Registrar's report an accurate comparison is not possible
by reason of the fact that the figures for the present Northolt Ward
as in 1921 are not available. However, the figures for Northolt
in 1921 would be so small as to have little effect on the totals and
in the comparisons of age-groups, housing, etc. The 1921 figures
include the former areas of Ealing, Hanwell and Greenford, but
exclude Northolt, while the 1931 figures are for the whole of the
present Borough.
The distribution of the population in age¬groups is shown in
the table below. The general improvement of the social and
sanitary conditions is undoubtedly leading to increasing numbers
in the advanced age-groups, while the decreasing birth-rate is
responsible for a smaller proportion at the younger ages. The
real effect of these factors, however, cannot be estimated in a
district such as Ealing where the increase during the decennium
due to migration amounts to 27,274. The age¬distributions of
this new population would certainly be very different from the
age grouping in general, as the people moving into the newly
developed areas largely consist of young married people, classified
in the age-groups 15 to 29 and 30 to 44. It will be seen that all
of the age-groups given in the Table show an increase in the actual
total with the exception of the age-group 5 to 14 years, in which
a decrease of 63 is recorded. A significant fact is that while in
1921 25.2 per cent., or one out of every four of the total population
was under 15 years of age, in 1931 only 20.6 per cent., or approximately
one out of every five, was under fifteen years of age.