Latest Data (2015)
Population 73,254
Nationwide Rank 474

Quick Facts

Decatur, Illinois is the 474th largest city in the United States as of 2015.

Decatur, Illinois is a city.

Decatur, Illinois is currently 14.2% smaller than it was in 1990, the year of its peak recorded population.

Decatur, Illinois's growth is extremely below average. 98% of similarly sized cities are growing faster since 2000.

Decatur, Illinois Border Map

Similarly Sized Cities

Rank Name Growth
2000-2015
468 Fort Myers, Florida 42.4%
469 Boynton Beach, Florida 22.0%
470 Jonesboro, Arkansas 32.5%
471 Rapid City, South Dakota 22.5%
472 Warner Robins, Georgia 47.6%
473 Rochester Hills, Michigan 6.4%
474 Decatur, Illinois -10.5%
475 Southfield, Michigan -6.5%
476 New Britain, Connecticut 1.7%
477 Franklin, Tennessee 56.6%
478 Turlock, California 26.9%
479 Temple, Texas 30.9%
480 Apple Valley, California 32.1%

Demographics

Population History

Year Population Rank in US
2015 73,254 474
2014 74,010 457
2013 74,710 448
2012 75,407 439
2011 75,852 430
2010 76,122 419
2009 76,199 405
2008 76,276 401
2007 76,700 393
2006 76,964 385
2005 77,565 375
2004 78,168 370
2003 78,749 362
2002 79,776 354
2001 80,911 341
2000 81,912 326
1990 85,424 255