| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Fanum Sancti Albani | city | Hertfordshire | United Kingdom | 51.75 | -0.33 | 252 | 65390 |
| Flamstead | city | Hertfordshire | United Kingdom | 51.82 | -0.43 | 390 | 78068 |
| Flaunden | city | Hertfordshire | United Kingdom | 51.68 | -0.52 | 249 | 70398 |
| Furneaux Pelham | city | Hertfordshire | United Kingdom | 51.93 | 0.08 | 331 | 8632 |
| Furneux Pelham | city | Hertfordshire | United Kingdom | 51.93 | 0.08 | 331 | 8632 |