1911 Census of England and Wales, General Report with Appendices, Table 85: " Towns with Highest and Lowest Proportion of Families of Certain Sizes".

Families of less than 4 persons. Families of 4 to 6 persons. Families of over 6 persons.
Town. Per 1,000
families.
Town. Per 1,000
families.
Town. Per 1,000
families.
Highest.   Highest.   Highest.  
Devonport 522 Ilford 485 St. Helens 292
Bath 518 Handsworth 484 Rhondda 262
Plymouth 515 Aberdare 483 Wigan 245
Halifax 501 King's Norton and Northfield 480 Bootle 243
Hastings 497 Swindon 476 Edmonton 243
Rochdale 488 Wallasey 476 Warrington 233
Dewsbury 486 Coventry 475    
    Middlesbrough 475    
Lowest.   Lowest.   Lowest.  
St. Helens 256 Bath 367 Halifax 98
Rhondda 265 Plymouth 375 Gillingham 100
Wigan 296 Devonport 377 Devonport 101
Warrington 300 Hastings 385 Dewsbury 106
Edmonton 301 Great Yarmouth 390 Bradford 107
Stoke-on-Trent 301 Brighton 391 Plymouth 110
Bootle 305 Canterbury 398 Rochdale 110
        Bath 115