1931 Census of England and Wales, General Report, Table 86 : " Areas with Resident Population in Excess of Enumerated Population".

Area Percentage Excess Area Percentage Excess Area Percentage Excess
(a)Administrative Counties (excess 5% or over):   Urban Districts (contd.)   Urban Districts (contd.)  
      Llandilo 5.5   Hedon M.B. 2.3
  Rutland 2.4   Brackley M.B. 4.4   Narberth 2.3
  Peterborough 0.7   Caerleon 4.2   Bangor M.B. 2.3
  London 0.5   Harrow-on-the-Hill 4.2   Alvaston and Boulton 2.2
      Wantage 4.1   Kingsbridge 2.1
(b)County Boroughs (excess 5% or over):     Ellesmere 4.1   Newnham 2.1
      Chatham M.B. 3.9   Huyton-with-Roby 2.1
  Canterbury 1.1   Neyland 3.8   Leatherhead 2.1
  South Shields 1.0   Saxmundham 3.7   Cheltenham M.B. 2.0
  West Hartlepool 0.9   Bungay 3.4   Bishop's Stortford 2.0
  Gloucester 0.8   Amlwch 3.4   Harpenden 2.0
  Rochdale 0.8   Great Berkhampstead 3.3   Richmond (Yorks) M.B. 2.0
  Merthyr Tydfil 0.8   Carnforth 3.3    
  Newport 0.8   Wellington (Salop) 3.3 (d) Rural Districts (excess 2% or over):  
  Darlington 0.7   Saffron Walden M.B. 3.3   Uppingham 6.6
  Gateshead 0.7   Llandovery M B. 3.2   Sedbergh 5.7
  York 0.7   Oakham 3.1   Sefton 5.5
  Chester 0.6   Handforth 2.9   Stockton 5.0
  Great Yarmouth 0.6   Dolgelley 2.8   Uttoxeter  
  Reading 0.5   Truro M.B. 2.7   Headington 3.7
  Birkenhead 0.5   Bala 2.7   Horsham 3.1
  Sunderland 0.5   Durham M.B. 2.6   Helmsley 2.6
  Bolton 0.5   Sevenoaks 2.6   Mutford and Lothingland 2.5
  Ipswich 0.5   Aberaryon 2.6   Hunslet 2.5
  Middlesbrough 0.5   Hayle 2.5   Bredwardine 2.4
      Walton-le-Dale 2.5    
(c) Other Urban Districts(excess 2% or over):     Crediton 2.5 Number of other U.D.s withdifferences of 1% andunder 2%: 108  
  Cleethorpes 2.5
  Eton 21.8   Kirkby Lonsdale 2.5
  Oundle 14.5   Malvern 2.5    
  Marlborough M.B. 10.7   Bowdon 2.4 Number of R.D.s with dif-ferences of 1% andunder 2%: 19  
  Lampeter M.B. 8.8   Halesworth 2.4
  Rishworth 6.3   Wivenhoe 2.3
  Cowbridge M.B. 5.6   Tonbridge 2.3