What's the biggest city you've ever lived in?

it depends how you look at it, the city that I live in currently has 500,000 people, but they say it's growing an average of 1000 people per month, and they're predicting that it's going to be  be the biggest city in the region by 2040, Where I live there are several cities that bump into one another, In total there are about 2 and a half million people. (the next biggest city is 650,000, never live there though)

I lived in mid-Wilshire Los Angeles for a few years in my twenty's.

I guess that would be Nashville, where I currently live. It's almost 700,000 people.