1931 Census of England and Wales, General Report, Table 38 : " Highest and Lowest Proportions of Females per 1,000 Males in Metropolitan Boroughs, County Boroughs and Administrative Counties".

Highest Lowest
 
Metropolitan Boroughs (average 1.151)
 
Hampstead 1,547 City of London 974
Kensington 1,544 Woolwich 1,007
St. Marylebone 1,517 Poplar 1,024
Chelsea 1,465 Southwark 1,028
Paddington 1,356 Bermondsey 1,032
 
County Boroughs (average 1,107)
 
Bournemouth 1,482 Barrow-in-Furness 945
Eastbourne 1,452 St. Helens 958
Hastings 1,436 Merthyr Tydfil 958
Southport 1,393 Middlesbrough 982
Bath 1,360 Rotheram 984
Blackpool 1,315 Grimsby 991
Southend-on-Sea 1,296 Barnsley 994
Brighton 1,245 Warrington 1,011
Wallasey 1,208 Coventry 1,018
Halifax 1,200 Doncaster 1,019
 
Administrative Counties (average 1,079)
 
Sussex, East 1,246 Monmouth 936
Sussex, West 1,203 Glamorgan 953
Isle of Wight 1,191 Durham 965
Surrey 1,171 Brecknock 972
Cardigan 1,170 Lincoln, Kesteven 981
Devonshire 1,156 Isle of Ely 982
Westmorland 1,152 Southampton 985
London 1,151 Wiltshire 1,004
Cornwall 1,136 Derbyshire 1,009
Middlesex 1,132 Staffordshire 1,013