In the U.K. the film Zootopia is called Zootropolis, possibly because of some copyright nonsense (http://www.irishtimes.com/blogs/screenwriter/2016/03/10/why-is-zootopia-called-zootropolis-here/). But I was just wondering if in the movie itself does the name of the city change between versions? In the U.K. version it's referred to as "Zootropolis" which could have been over dubbed, although the play Judy performs in at the beginning has "Zootropolis" written on a banner - possibly its written in other places as well - which would be harder to change. I also noticed that Gazelle opens her concert at the end with something like "Hello Zootopians" so my assumption is they missed over dubbing that line.
Follow up question; If in the US version the city is still called Zootropolis, why would they call the film Zootopia anyway?