O'Fallon, Illinois Population History 1990 - 2019
What is the current population of O'Fallon?
Based on the latest 2020 data from the US census, the current population of O'Fallon is 29,583. O'Fallon, Illinois is the 1,299th largest city in the US.
What was the peak population of O'Fallon?
The current population of O'Fallon (29,583) is it's peak population.
How quickly is O'Fallon growing?
O'Fallon has grown 32.8% since the 2000. O'Fallon, Illinois is growing moderately quickly; it is growing faster than 75% of similarly sized cities since 2000.
What county is O'Fallon, Illinois in?
O'Fallon is located entirely in St Clair County.
What is the population density of O'Fallon, Illinois?
O'Fallon has a population density of 1,970.3 people per square mile.What is the size of O'Fallon, Illinois in square miles?
O'Fallon has an area of 14.3 square miles.What is the voting age population of O'Fallon, Illinois?
The total voting age population of O'Fallon, Illinois, meaning US citizens 18 or older, is 20,861. The voting age population is 48.2% male and 51.8% female.
What percentage of O'Fallon, Illinois residents are senior citizens?
According to the latest census statistics, 11.8% of the residents of O'Fallon are 65 or older.
What are the racial demographics of O'Fallon, Illinois?
The racial demographics of O'Fallon are 79.5% White, 11.8% Black, 4.1% Two or more races, 3.1% Asian, 1.4% Other and 0.1% American Indian. Additionally, 5.0% of the population identifies as Hispanic.
Population History
| Year | Population | Rank in US |
|---|---|---|
| 2019 | 29,583 | 1,299 |
| 2018 | 29,584 | 1,292 |
| 2017 | 29,272 | 1,294 |
| 2016 | 29,031 | 1,287 |
| 2015 | 29,002 | 1,288 |
| 2014 | 29,069 | 1,276 |
| 2013 | 29,143 | 1,266 |
| 2012 | 29,193 | 1,247 |
| 2011 | 29,251 | 1,238 |
| 2010 | 28,281 | 1,265 |
| 2009 | 27,778 | 1,261 |
| 2008 | 27,515 | 1,263 |
| 2007 | 27,044 | 1,275 |
| 2006 | 26,265 | 1,299 |
| 2005 | 25,656 | 1,314 |
| 2004 | 24,948 | 1,336 |
| 2003 | 24,323 | 1,361 |
| 2002 | 23,286 | 1,394 |
| 2001 | 22,746 | 1,415 |
| 2000 | 22,272 | 1,429 |
| 1990 | 16,550 | 1,630 |
Similarly Sized Cities In US
| US Rank | Name | Population | Growth 2000-2019 |
|---|---|---|---|
| 1289 | Santa Paula, California | 29,806 | 3.6% |
| 1290 | Eagle, Idaho | 29,796 | 139.3% |
| 1291 | Maryville, Tennessee | 29,742 | 28.3% |
| 1292 | Walnut, California | 29,685 | -1.2% |
| 1293 | Eagle Pass, Texas | 29,684 | 30.2% |
| 1294 | Suisun City, California | 29,663 | 12.8% |
| 1295 | Texarkana, Arkansas | 29,657 | 6.4% |
| 1296 | Kent, Ohio | 29,646 | 5.2% |
| 1297 | North Chicago, Illinois | 29,615 | -17.6% |
| 1298 | Duluth, Georgia | 29,609 | 28.5% |
| 1299 | O'Fallon, Illinois | 29,583 | 32.8% |
| 1300 | Atwater, California | 29,559 | 27.0% |
| 1301 | Highland Park, Illinois | 29,515 | -2.6% |
| 1302 | Westfield, New Jersey | 29,512 | -0.5% |
| 1303 | Oak Park, Michigan | 29,431 | -9.1% |
| 1304 | Rexburg, Idaho | 29,400 | 65.2% |
| 1305 | Central, Louisiana | 29,357 | 10.1% |
| 1306 | Chicago Heights, Illinois | 29,322 | -10.5% |
| 1307 | East Palo Alto, California | 29,314 | -2.1% |
| 1308 | Parkersburg, West Virginia | 29,306 | -12.0% |
| 1309 | Russellville, Arkansas | 29,175 | 21.5% |
Similarly Sized Cities In Illinois
| US Rank | Name | Population | Growth 2000-2019 |
|---|---|---|---|
| 648 | Des Plaines | 58,899 | 3.1% |
| 668 | Orland Park | 57,857 | 12.5% |
| 687 | Tinley Park | 55,773 | 13.2% |
| 702 | Oak Lawn | 55,022 | -0.3% |
| 713 | Normal | 54,469 | 19.3% |
| 715 | Berwyn | 54,391 | 0.7% |
| 726 | Mount Prospect | 53,719 | -4.4% |
| 743 | Wheaton | 52,745 | -5.0% |
| 749 | Oak Park | 52,381 | -0.2% |
| 768 | Hoffman Estates | 50,932 | 2.4% |
| 797 | Downers Grove | 49,057 | -1.2% |
| 832 | Glenview | 47,308 | 9.5% |
| 838 | Elmhurst | 46,746 | 8.4% |
| 870 | Plainfield | 44,308 | 222.3% |
| 871 | Lombard | 44,303 | 3.8% |
| 904 | DeKalb | 42,847 | 9.3% |
| 916 | Urbana | 42,214 | 11.5% |
| 938 | Moline | 41,356 | -5.9% |
| 950 | Belleville | 40,897 | -3.4% |
| 956 | Bartlett | 40,647 | 10.3% |
| 961 | Buffalo Grove | 40,494 | -6.4% |
| 974 | Quincy | 39,949 | -1.8% |
| 978 | Crystal Lake | 39,829 | 3.8% |
| 981 | Romeoville | 39,746 | 79.9% |
| 993 | Streamwood | 39,228 | 7.1% |
| 996 | Carol Stream | 39,203 | -3.1% |
| 1010 | Wheeling | 38,646 | 6.5% |
| 1034 | Hanover Park | 37,426 | -2.2% |
| 1038 | Carpentersville | 37,254 | 19.6% |
| 1042 | Rock Island | 37,176 | -6.2% |
| 1050 | Park Ridge | 36,950 | -2.2% |
| 1061 | Addison | 36,482 | 0.1% |
| 1075 | Oswego | 36,252 | 160.8% |
| 1087 | Calumet City | 35,913 | -7.9% |
| 1159 | Glendale Heights | 33,617 | 5.0% |
| 1167 | Woodridge | 33,432 | 7.3% |
| 1180 | Northbrook | 32,958 | -1.7% |
| 1185 | St. Charles | 32,887 | 16.4% |
| 1196 | Elk Grove Village | 32,400 | -6.7% |
| 1213 | Pekin | 32,045 | -5.4% |
| 1238 | Mundelein | 31,051 | -0.2% |
| 1245 | Algonquin | 30,897 | 32.8% |
| 1261 | Danville | 30,479 | -11.3% |
| 1264 | Gurnee | 30,378 | 4.9% |
| 1274 | Galesburg | 30,197 | -10.4% |
| 1297 | North Chicago | 29,615 | -17.6% |
| 1299 | O'Fallon | 29,583 | 32.8% |
| 1301 | Highland Park | 29,515 | -2.6% |
| 1306 | Chicago Heights | 29,322 | -10.5% |
| 1323 | Niles | 28,938 | -3.6% |
| 1331 | Lake in the Hills | 28,634 | 18.9% |
| 1342 | Burbank | 28,289 | 1.3% |
| 1355 | Granite City | 28,158 | -11.7% |
| 1373 | Glen Ellyn | 27,714 | 1.7% |
| 1383 | Lansing | 27,402 | -3.2% |
| 1392 | Huntley | 27,228 | 337.8% |
| 1396 | Oak Forest | 27,173 | -3.6% |
| 1401 | Round Lake Beach | 27,100 | 3.6% |
| 1403 | Wilmette | 27,089 | -1.8% |
| 1406 | McHenry | 27,061 | 24.0% |
| 1420 | New Lenox | 26,926 | 46.5% |
| 1424 | West Chicago | 26,816 | 12.2% |
| 1440 | Vernon Hills | 26,521 | 30.1% |
| 1444 | Batavia | 26,420 | 8.2% |
| 1457 | Alton | 26,208 | -13.9% |
| 1463 | East St. Louis | 26,047 | -17.4% |
| 1465 | Kankakee | 26,024 | -5.8% |
| 1486 | Lockport | 25,615 | 63.0% |
| 1506 | Woodstock | 25,240 | 24.2% |
| 1508 | Edwardsville | 25,233 | 12.7% |
| 1514 | Belvidere | 25,143 | 18.5% |
| 1519 | Carbondale | 25,083 | -4.4% |
| 1539 | South Elgin | 24,755 | 49.7% |
| 1542 | Melrose Park | 24,703 | 6.6% |
| 1561 | Homer Glen | 24,472 | 9.0% |
| 1564 | Westmont | 24,443 | -1.8% |
| 1568 | Harvey | 24,408 | -18.5% |
| 1571 | Collinsville | 24,395 | -2.2% |
| 1587 | Elmwood Park | 24,098 | -5.0% |
| 1606 | Freeport | 23,775 | -9.9% |
| 1625 | Rolling Meadows | 23,532 | -4.5% |
| 1627 | Zion | 23,487 | 2.1% |
| 1636 | Loves Park | 23,371 | 14.9% |
| 1637 | Lisle | 23,270 | 2.9% |
| 1639 | Maywood | 23,158 | -14.0% |
| 1649 | Blue Island | 22,899 | -2.3% |
| 1658 | Morton Grove | 22,796 | 1.6% |
| 1666 | Machesney Park | 22,677 | 9.0% |
| 1673 | East Peoria | 22,546 | -0.5% |
| 1681 | Roselle | 22,463 | -3.6% |
| 1685 | Dolton | 22,348 | -12.6% |
| 1713 | Geneva | 21,809 | 10.2% |
| 1715 | Bloomingdale | 21,779 | 0.0% |
| 1726 | Darien | 21,628 | -5.8% |
| 1734 | Villa Park | 21,483 | -3.7% |
| 1748 | South Holland | 21,296 | -4.2% |
| 1758 | Park Forest | 21,210 | -9.8% |
| 1785 | Grayslake | 20,725 | 10.6% |
| 1791 | East Moline | 20,645 | -3.8% |
| 1792 | Yorkville | 20,613 | 212.9% |
| 1811 | Crest Hill | 20,376 | 49.3% |
| 1823 | Libertyville | 20,205 | -2.9% |
| 1826 | Mokena | 20,159 | 36.7% |
| 1834 | Charleston | 20,117 | -4.9% |
| 1862 | Lake Zurich | 19,877 | 7.1% |
| 1875 | Montgomery | 19,638 | 250.4% |
| 1887 | Bourbonnais | 19,462 | 26.7% |
| 1889 | Matteson | 19,448 | 49.1% |
| 1890 | Lake Forest | 19,446 | -3.6% |
| 1893 | Frankfort | 19,373 | 81.1% |
| 1909 | Evergreen Park | 19,147 | -7.9% |
| 1935 | Alsip | 18,709 | -5.0% |
| 1938 | Homewood | 18,703 | -4.2% |
| 1942 | Bellwood | 18,672 | -8.9% |
| 1945 | Deerfield | 18,646 | 0.6% |
| 1951 | Jacksonville | 18,603 | -6.9% |
| 1968 | Sycamore | 18,322 | 47.4% |
| 1969 | Brookfield | 18,310 | -3.9% |
| 1987 | Round Lake | 18,100 | 200.2% |
| 1989 | Cary | 18,067 | 15.8% |
| 1990 | Ottawa | 18,063 | -2.6% |
| 1991 | North Aurora | 18,057 | 64.7% |
| 1992 | Bensenville | 18,044 | -12.9% |
| 2031 | Hinsdale | 17,637 | 1.0% |
| 2033 | Franklin Park | 17,627 | -9.4% |
| 2034 | Mattoon | 17,615 | -3.3% |
| 2044 | Marion | 17,520 | 8.0% |
| 2048 | Shorewood | 17,509 | 116.0% |
| 2058 | Macomb | 17,413 | -5.6% |
| 2060 | Godfrey | 17,400 | 3.5% |
| 2067 | Lemont | 17,291 | 27.8% |
| 2092 | Palos Hills | 17,060 | -3.4% |
| 2141 | Washington | 16,516 | 40.7% |
| 2144 | Country Club Hills | 16,482 | 1.8% |
| 2162 | Fairview Heights | 16,303 | 8.7% |
| 2164 | Morton | 16,277 | 5.2% |
| 2184 | Westchester | 16,117 | -4.1% |
| 2188 | Bridgeview | 16,096 | 4.9% |
| 2215 | Prospect Heights | 15,887 | -6.7% |
| 2267 | La Grange | 15,322 | -1.7% |
| 2268 | Bradley | 15,314 | 17.6% |
| 2284 | Dixon | 15,115 | -5.5% |
| 2291 | Morris | 15,053 | 25.1% |