What is the population and of New Orleans before and after Katrina?

Answer 1

Population, before Hurricane Katrina: around 457,000
Population, now: between 192,000 and 220,000

Answer 2

Almost one half-million people lived in New Orleans before the Katrina while after the disaster, about two thousand people are st listed officially as missing, although many are believed to be alive. Louisiana's medical examiner says the missing include several hundred in New Orleans.
More than five hundred fifty people are known to have died in New Orleans.
....That's such a horrible disaster in Americana's history --thought-provoking and I do feel sorry for the refugees...
Well,Hope this will help=)
Good luck!