I think they are just 3 "places". Dodderhill was (and is I think) a parish with church etc; Crutch is usually described as an extra parochial manor; Paper Mills is also a locality, not sure of the status. Here is a quote from
http://users.ox.ac.uk/~peter/workhouse/Droitwich/Droitwich.shtml where all three are referred to:
After 1834
Droitwich Poor Law Union was formed on 11th October 1836. Its operation was overseen by an elected Board of Guardians, 29 in number, representing its 26 constituent parishes as listed below (figures in brackets indicate numbers of Guardians if more than one):
County of Worcester: Claines (2), Crowle, Dodderhill, Doverdale, Droitwich St Andrew, Droitwich St Nicholas, Droitwich St Peter, Droitwich in Liberties, Elmbridge, Elmley Lovett, Hadsor [Hadzor], Hampton Lovett, Hanbury, Hartlebury (2), Himbleton, Hindlip, Huddington, Martin Hussingtree, Oddingley, Ombersley (2), Salwarpe, Stock and Bradley, Tibberton, Upper Mitton, Upton Warren, Warndon.
Later Additions: Crutch (from 1858), Grafton Manor (1837-62), Marlborough in the Vines (from 1858), Paper Mills (from 1858), Shell (from 1858), Westwood Park (from 1858).
If you go to
http://www.old-maps.co.uk/ and put in the following grid reference 391394,265777, select co-ordinate and search, then you will get a map. If you zoom out fully you can see Crutch and Dodderhill written across the map - Droitwich is sort of off to the bottom left.
Hope this helps a bit, have to admit it is rather confusing
