1911 Census of England and Wales, General Report with Appendices, Table 96: " Gain and Loss by Migration in registration Counties, 1901-1911".

Registration County. Gain per
cent. of
1901
population.
Registration County. Loss per
cent. of
1901
population.
Middlesex 22.7 Radnorshire* 23.1
Surrey 15.5 Merionethshire 13.0
Monmouthshire 10.9 London 12.2
Glamorganshire 10.6 Cumberland 11.1
Hertfordshire 8.9 Montgomeryshire 10.3
Carmarthenshire 8.6 Westmorland 9.3
Essex 8.5 Shropshire 7.6
Hampshire 7.7 Staffordshire 7.2
Nottinghamshire 3.9 Herefordshire 7.1
Cheshire 3.7 Huntingdonshire 6.6
Bedfordshire 3.0 Northamptonshire 6.6
Flintshire 2.6 Pembrokeshire 6.6
Sussex 2.2 Brecknockshire 6.5
Dorsetshire 1.1 Gloucestershire 6.3
Lincolnshire 1.1 Rutlandshire 5.5
Buckinghamshire 0.4 Anglesey 5.4
Northumberland 0.2 Norfolk 5.3
    Wiltshire 5.1

* In 1901 the population of this county was temporarily augmented by the presence of workmen and others connected with the construction of waterworks for the City of Birmingham.