Residents of Brighton, Inverness and Wolverhampton were told they had beaten 36 other towns to become cities just before Christmas.
Though the title of city confers no additional powers, council leaders hope the honour, bestowed by the Queen as part of millennium celebrations, will attract extra investment.
Wolverhampton MBC leader Norman Davies said: 'Other towns which have become cities have recognised it has made a difference. We believe it will bring even greater awareness of the existence of Wolverhampton. We have always worked hard to attract inward investment and business leaders believe it will help them.'
Brighton & Hove Council said the campaign for city status was a 'profile-raising exercise'.
'It gave us an opportunity to tell people about the talents we have in Brighton & Hove, particularly in new media and technology. A lot of people see us as a little seaside resort and don't know a lot more about us. We have two universities turning out talented people and if people know about that then we're more likely to get extra investment,' a spokesman said.
Sunderland, which was granted city status in 1992, said it had brought nothing but benefit to the area.
Chief executive Colin Sinclair said: 'Over the past eight years Sunderland has transformed its image, building upon its rich industrial heritage to become a forward-looking city.'