Wales presents unique difficulties. The 12 counties of 1872 have been significantly changed twice - the map of 2001 shows the most recent structure of Wales with just seven 'administrative units', reduced from eight after the 1974 reorganisation of local government. Three of the 1872 counties, Radnor, Montgomery and Brecknock, have been absorbed into what is broadly Powys but not precisely enough to combine the three for comparison with Powys. For this reason, the three counties are simply shown as they stood in 1872. The second difficulty with Wales is that there was an element of Irish-style land redistribution in progress in the 1800s and 1900s, and far more of the 1872 estates have vanished altogether than is the case in England or Scotland.

Anglesey Brecknock Caernarvonshire Cardiganshire Carmarthenshire

Denbighshire Flintshire Glamorganshire Merionethshire Monmouthshire

Montgomeryshire Pembrokeshire Radnorshire