Latest Data (2015)
Population 68,460
Nationwide Rank 512

Quick Facts

Waterloo, Iowa is the 512th largest city in the United States as of 2015.

Waterloo, Iowa is a city.

Waterloo, Iowa is currently 0.4% smaller than it was in 2000, the year of its peak recorded population.

Waterloo, Iowa's growth is extremely below average. 91% of similarly sized cities are growing faster since 2000.

Waterloo, Iowa Border Map

Similarly Sized Cities

Rank Name Growth
2000-2015
506 Kissimmee, Florida 40.7%
507 Walnut Creek, California 6.6%
508 St. Charles, Missouri 13.3%
509 Mount Vernon, New York 0.2%
510 Conroe, Texas 76.2%
511 Dothan, Alabama 17.5%
512 Waterloo, Iowa -0.4%
513 Maple Grove, Minnesota 33.1%
514 Redondo Beach, California 7.3%
515 Bossier City, Louisiana 20.5%
516 Yorba Linda, California 15.0%
517 Woodbury, Minnesota 44.4%
518 Eau Claire, Wisconsin 9.0%

Demographics

Population History

Year Population Rank in US
2015 68,460 512
2014 68,364 507
2013 68,366 498
2012 68,297 491
2011 68,365 483
2010 68,406 473
2009 66,761 484
2008 66,281 483
2007 65,941 476
2006 66,230 467
2005 66,514 462
2004 66,880 447
2003 67,100 441
2002 67,667 432
2001 68,387 419
2000 68,766 411
1990 66,732 353