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To say it's going to keep growing at 25% each decade for the next 100 years means its going to have to keep growing by more and more and more people each decade compared to the last.
So by 100 years from now, Atlanta is going to be growing by almost 8 million people EVERY decade. That's not very sustainable for cities on our planet. Even with technology growth, it's going to be very hard to keep stability or a good standard of living if you're going to be adding millions of people every few years.
Don't take this too seriously as population growth rates will obviously not stay consistent for the the next 100 years. But hypothetically, if they did stay consistent and every city experienced their current growth rate (based off of 2000-2008 growth Table of United States primary census statistical areas - Wikipedia, the free encyclopedia) for the next 100 years, these would be our 25 largest cities:
Add the above with the fact that China is rapidly urbanizing and growing its middle class at an astonishing rate. When middle class people live in cities the tend to have fewer children, a fact that has repeated itself in Europe, Japan and America. China will still probably have about the same population today 100 years from now...unless there is some sort of baby boom.
I could never guess the populations and I would imagine that designated metro areas would be impractical to discern. Today's metro areas, by 2110, will be huge combined metro statistical areas, including:
Seattle-Portland-Vancouver
San Francisco-Los Angeles-San Diego-Tijuana
Dallas-Fort Worth-Houston
Tallahassee-Orlando-Miami-Tampa
Boston-New York-Philadelphia-Baltimore-Washington DC-Hampton Roads
Charlotte-Raleigh/Durham-Winston/Salem
Chicago-Milwaukee-Indianapolis
Columbus-Cincinnati-Cleveland
Las Vegas-Phoenix-Tuscon
Omaha-Topeka-Kansas Cities-Tulsa-Oklahoma City
I could never guess the populations and I would imagine that designated metro areas would be impractical to discern. Today's metro areas, by 2110, will be huge combined metro statistical areas, including:
Seattle-Portland-Vancouver
San Francisco-Los Angeles-San Diego-Tijuana
Dallas-Fort Worth-Houston
Tallahassee-Orlando-Miami-Tampa
Boston-New York-Philadelphia-Baltimore-Washington DC-Hampton Roads
Charlotte-Raleigh/Durham-Winston/Salem
Chicago-Milwaukee-Indianapolis
Columbus-Cincinnati-Cleveland
Las Vegas-Phoenix-Tuscon
Omaha-Topeka-Kansas Cities-Tulsa-Oklahoma City
BosWash: Boston, Providence Hartford, New York, Philadelphia, Baltimore and Washington Southern Cali: Los Angeles, Riverside, San Bernardino, San Diego, Tijuana, Las Vegas Northern Cali: San Francisco, Oakland, San Jose, Sacramento, Stockton, Modesto, Fresno Great Lakes: Chicago, Detroit, Pittsburgh, Milwaukee, Indianapolis, Cleveland, Cincinnati, Columbus, Grand Rapids, Buffalo, Toronto, Columbus Piedmont Atlantic: Birmingham, Atlanta, Greenville, Charlotte, Greensboro, Winston-Salem, Raleigh The Texas Triangle: Houston, Dallas, San Antonio, Austin, and Fort Worth Gulf Coast: Houston, New Orleans, Baton Rouge, Mobile Cascadia: Seattle, Portland, Vancouver Florida: Miami, Tampa, St. Petersburg, Orlando Front Range: Denver, Colorado Springs, Pueblo, Cheyenne Sun corridor: Phoenix, Tucson
Oh well, nothing to do but hop in the car and drive to walmart, then pop out a few more kids.
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