History of local government in Wales Administrative Counties Administrative Counties

| Administrative_county | Area_1891_Statute_acres | Population_1891 | Area_1961_Statute_acres | Population_1961 |
|---|---|---|---|---|
| Anglesey | 175836 | 50098 | 176694 | 51705 |
| Brecknockshire | 469894 | 51393 | 469281 | 55185 |
| Cardiganshire | 443071 | 63467 | 443189 | 53648 |
| Carmarthenshire | 587816 | 130566 | 588271 | 168008 |
| Caernarfonshire (1) | 360138 | 117233 | 364108 | 121767 |
| Denbighshire | 424235 | 118843 | 427978 | 174151 |
| Flintshire | 164051 | 77277 | 163707 | 150082 |
| Glamorgan | 505815 | 467954 | 468808 | 523253 |
| Merionethshire | 427810 | 49212 | 422372 | 38310 |
| Monmouthshire (2) | 342548 | 203347 | 346779 | 336556 |
| Montgomeryshire | 510111 | 58003 | 510110 | 41165 |
| Pembrokeshire | 392710 | 88296 | 393008 | 94124 |