Having lived in Midtown since 2005, I can attest how obvious the difference in population is now compared to 2005. Even compared to 2010, the difference is blatant.

However most renters I believe have not officially changed their address. I do not know statistics on this, or have any real numbers to back this up, but from what I have seen it seems this is true. I have met many people who live in the area but their driver's license still says a suburb or even a different state.

One would have to assume this is an issue common to areas high in younger renters, people who may be referred to as young-urban-professionals. Though these cities may be better equipped to handle this in accounting their populations; cities such as Chicago, a popular place for young Michiganders to relocate to.