1931 Census of England and Wales, General Report, Table 6 : " Intercensal Estimates of Population, England and Wales, 1921-1931".

Year Persons Males Females
1921 (Census) 37,886 18,075 19,811
1922 38,158 18,225 19,933
1923 38,403 18,342 20,061
1924 38,746 18,545 20,201
1925 38,890 18,602 20,288
1926 39,067 18,698 20,369
1927 39,290 18,804 20,486
1928 39,482 18,896 20,586
1929 39,607 18,969 20,638
1930 39,806 19,075 20,731
1931 (Census) 39,952 19,133 20,819