By Lynne Adkins

PHILADELPHIA (CBS) — As Houston remain atop the news, we’ve learned that the city is the fourth largest even though many thought that was where Philadelphia ranked.

Philadelphia is ranked number 6 according to Amel Toukabri, a demographer with the U.S. Census Bureau.

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“It’s based on the population estimates for your city so we usually compare the population for this year compared to last year,” she said.

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We used to be higher on the list, but with just over a million and a half people in the city we lost our number 5 ranking to Phoenix.

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Number one is New York City with over 8.5 million people, and the last city on the ranking is Wichita, Kansas.