O Fallon, IL Historical Language Spoken at Home Data
ACS 2010-2014 data
Total population: 29,100
| O Fallon, IL | % | Illinois | U.S. | |
| English | 9,592 | 91.14%, see rank | 78.40% | 79.39% |
| Spanish | 256 | 2.43%, see rank | 11.07% | 11.75% |
| Other Indo-European Languages | 334 | 3.17%, see rank | 6.60% | 4.52% |
| Asian and Pacific Islander Languages | 306 | 2.91%, see rank | 2.95% | 3.36% |
| Other | 37 | 0.35%, see rank | 0.98% | 0.99% |
ACS 2008-2012 data
Total population: 28,377
| O Fallon, IL | % | Illinois | U.S. | |
| English | 9,303 | 90.49%, see rank | 78.51% | 79.64% |
| Spanish | 257 | 2.50%, see rank | 10.98% | 11.57% |
| Other Indo-European Languages | 422 | 4.10%, see rank | 6.73% | 4.61% |
| Asian and Pacific Islander Languages | 273 | 2.66%, see rank | 2.84% | 3.24% |
| Other | 26 | 0.25%, see rank | 0.93% | 0.94% |
ACS 2006-2010 data
Total population: 27,044
| O Fallon, IL | % | Illinois | U.S. | |
| English | 9,096 | 90.03%, see rank | 78.83% | 79.95% |
| Spanish | 299 | 2.96%, see rank | 10.86% | 11.42% |
| Other Indo-European Languages | 407 | 4.03%, see rank | 6.72% | 4.60% |
| Asian and Pacific Islander Languages | 280 | 2.77%, see rank | 2.73% | 3.14% |
| Other | 21 | 0.21%, see rank | 0.85% | 0.89% |
ACS 2005-2009 data
Total population: 26,710
| O Fallon, IL | % | Illinois | U.S. | |
| English | 9,127 | 90.08%, see rank | 79.10% | 80.35% |
| Spanish | 302 | 2.98%, see rank | 10.68% | 11.21% |
| Other Indo-European Languages | 375 | 3.70%, see rank | 6.82% | 4.62% |
| Asian and Pacific Islander Languages | 317 | 3.13%, see rank | 2.58% | 2.95% |
| Other | 11 | 0.11%, see rank | 0.82% | 0.87% |
US Census 2000 data
Total population: 21,910
| O Fallon, IL | % | Illinois | U.S. | |
| English | 7,338 | 89.09%, see rank | 80.34% | 81.14% |
| Spanish | 283 | 3.44%, see rank | 9.59% | 10.21% |
| Other Indo-European Languages | 339 | 4.12%, see rank | 7.06% | 5.22% |
| Asian and Pacific Islander Languages | 227 | 2.76%, see rank | 2.27% | 2.61% |
| Other | 50 | 0.61%, see rank | 0.74% | 0.82% |
* ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.