Chicago (CNN) - New data from the U.S. Census Bureau shows more people are moving downtown.

The report defined downtowns as within a two-mile radius of a city hall, and the 2010 census shows 16 million people were living downtown. That's about six percent of the 258 million metro-area dwellers.

Chicago saw the biggest downtown population boom, which saw 48,000 new residents over 10 years.

New Orleans saw the largest decline, losing 35,000 people from 2000 until 2010.

Researchers believe the move is due to people wanting to live closer to their jobs.

CNN