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* In this year the index is of persons living more than two to a room in tenements of less than five rooms as a
percentage of the total population, and consequently the value is slightly lower than it would have been on the basis of
subsequent years.
** For 1911 the rate was based on families living in 1.9 rooms and is therefore slightly more than a rate based on
all private families as in the other years.
Density
Two measures of density are given in Table II. The most striking feature is the very
great decrease in overcrowding that was accomplished by 1951. Between 1911 and 1931
a small improvement had taken place in the overcrowding indices but no large changes
occurred in the relative positions of the boroughs ; the boroughs with the most overcrowding
in 1911 still had the most in 1931. In 1951, in most boroughs, the proportion
living more than two to a room had become only a fraction of the corresponding
proportion in 1931. The lowest indices of overcrowding were recorded at each Census
for the boroughs of Hampstead, Lewisham, Stoke Newington, Wandsworth, and
Woolwich.
Foreign.born population
For the first 30 years of the 20th century the foreign.born population of London
remained almost constant in proportion (some 3 per cent.). In 1951 the proportion
rose to 5 per cent. and became more widely dispersed through London (Table III,
next page).
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