Adjectives relating to town and city names
Solution 1:
Cambridge is 'Cantabrigian', and Oxford 'Oxonian'.
Oxford Dictionaries does not include 'Oxfodian' as meaning 'a resident or native of the City'. But it has other meanings, such as a 'member of the Oxford movement of 1833.
Other than those answered by Andrew Leach in his comment I don't believe any of the others lend themselves to adjectival use in this way.