Location and coordinates are for the approximate centre of Aldenham within this administrative area. Geographic features and populated places may cross administrative borders.
Gazetteer of the British Isles (Edinburgh: Bartholomew, 1887). John Bartholomew
Aldenham, par. and seat, SW. Herts, 3 miles NE. of Watford, 6113 ac. (80 water), pop. 1833.