Dear Tim
Yes, interesting, but also disappointing. Not many have an asterisk - in fact the list for Yorkshire - and there's only 9 placenames so no need for splitting into ridings - has only Warmsworth (1829) with an asterisk. The 1821 list offers Ossett cum Gawthorpe, out of 22 place names; and the 1811, Tankersely (taken in 1809. The other listed place names in the 1831 census have some individuals named apparently - for Yorkshire they are - Boynton, Nrether Hallam, Hedon, Hipperholme cum Brighouse, Snaith, Spofforth, Swinton, Warmsworth, and Yeadon. So a bit disappointing. Apparently these early censuses are particularly useful for some of the Irish counties. However, he also recommends looking for surveys for taxation or religious or military purposes which contain names. I know this is disappointing but I recommend the book - it;'s quite fascinating and if you find just what you are looking for, really helpful for your own research. Now if you were researching York!!!
Please let me know if I can help further - I'm sorry to not be more help.
Linda