For the next thirty to fifty years, anyone who is in need of a new identity has a new defacto first choice: "refugee from New Orleans".
N.O. was a large city: you won't run into any suspicious neighbors unless you accidentally pick their own apartment building as your prior address. It was nicely multicultural and urban: you can have any accent, any ethnicity, any set of skills and plausibly claim to have been living in N.O. at the time of the hurricane. No one really knows how many people died and how many people survived. School records were largely lost. A high school diploma from many N.O. schools is now completely unverifiable. I wouldn't be too surprised if several colleges and universities had no off-site storage.
The best thing to do with an identity from New Orleans, of course, is to leverage it into a legitimate identity elsewhere. Once you have a few years of law-abiding, tax-paying, rent-paying citizenship in a random MidWestern town, everything will be clean.