| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cae'r-geiliog | city | Sir Ynys Mon | United Kingdom | 53.27 | -4.52 | 26 | 2594 |
| Caenby | city | Lincolnshire | United Kingdom | 53.38 | -0.48 | 137 | 3278 |
| Caerdydd | city | Cardiff | United Kingdom | 51.50 | -3.20 | 52 | 153316 |
| Caeredin | city | City of Edinburgh | United Kingdom | 55.95 | -3.20 | 104 | 102042 |
| Caerfaddon | city | Bath and North East Somerset | United Kingdom | 51.38 | -2.37 | 242 | 76794 |
| Caerffili | city | Caerffili | United Kingdom | 51.58 | -3.22 | 285 | 73063 |
| Caerfuddai | city | Essex | United Kingdom | 51.88 | 0.90 | 16 | 54837 |
| Caerfyrddin | city | Carmarthenshire | United Kingdom | 51.86 | -4.31 | 72 | 26565 |
| Caergaint | city | Kent | United Kingdom | 51.27 | 1.08 | 200 | 39258 |
| Caergrawnt | city | Cambridgeshire | United Kingdom | 52.20 | 0.12 | 124 | 130994 |
| Caergwrle | city | Wrexham | United Kingdom | 53.10 | -3.03 | 269 | 29736 |
| Caergybi | city | Sir Ynys Mon | United Kingdom | 53.30 | -4.63 | 3 | 1240 |
| Caerhirfryn | city | Lancashire | United Kingdom | 54.07 | -2.83 | 32 | 28108 |
| Caerhun | city | Conwy | United Kingdom | 53.22 | -3.83 | 291 | 11066 |
| Caerleon | city | Newport | United Kingdom | 51.61 | -2.96 | 16 | 50570 |
| Caerliwelydd | city | Cumbria | United Kingdom | 54.88 | -2.93 | 157 | 20468 |
| Caerllion | city | Newport | United Kingdom | 51.61 | -2.96 | 16 | 50570 |
| Caerloyw | city | Gloucestershire | United Kingdom | 51.83 | -2.25 | 249 | 119392 |
| Caerlwytgoed | city | Staffordshire | United Kingdom | 52.68 | -1.82 | 259 | 30035 |
| Caerlŷr | city | Leicester | United Kingdom | 52.63 | -1.13 | 249 | 260902 |
| Caermarthen | city | Carmarthenshire | United Kingdom | 51.86 | -4.31 | 72 | 26565 |
| Caernarfon | city | Gwynedd | United Kingdom | 53.15 | -4.27 | 42 | 10679 |
| Caerphilly | city | Caerffili | United Kingdom | 51.58 | -3.22 | 285 | 73063 |
| Caersallog | city | Wiltshire | United Kingdom | 51.07 | -1.78 | 193 | 32475 |
| Caersws | city | Powys | United Kingdom | 52.52 | -3.43 | 830 | 1490 |
| Caerwent | city | Sir Fynwy | United Kingdom | 51.61 | -2.77 | 72 | 15785 |
| Caerwrangon | city | Worcestershire | United Kingdom | 52.20 | -2.20 | 236 | 128960 |
| Caerwrygion | city | Shropshire | United Kingdom | 52.67 | -2.65 | 219 | 13129 |
| Caerwynt | city | Hampshire | United Kingdom | 51.02 | -1.32 | 219 | 32638 |
| Caerwys | city | Flintshire | United Kingdom | 53.23 | -3.30 | 830 | 11656 |
| Caerwysg | city | Devon | United Kingdom | 50.70 | -3.53 | 85 | 107315 |
| Caesaromagus | city | Essex | United Kingdom | 51.73 | 0.48 | 124 | 56532 |
| Cae’r-geiliog | city | Sir Ynys Mon | United Kingdom | 53.27 | -4.52 | 26 | 2594 |