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Illinois Valley Central Unit School District 321 Historical Language Spoken at Home Data
ACS 2010-2014 data
Total population: 13,507
| Illinois Valley Central Unit School District 321 | % | Illinois | U.S. | |
| English | 5,289 | 96.76%, see rank | 78.40% | 79.39% |
| Spanish | 99 | 1.81%, see rank | 11.07% | 11.75% |
| Other Indo-European Languages | 53 | 0.97%, see rank | 6.60% | 4.52% |
| Asian and Pacific Islander Languages | 21 | 0.38%, see rank | 2.95% | 3.36% |
| Other | 4 | 0.07%, see rank | 0.98% | 0.99% |
ACS 2008-2012 data
Total population: 13,630
| Illinois Valley Central Unit School District 321 | % | Illinois | U.S. | |
| English | 5,147 | 95.58%, see rank | 78.51% | 79.64% |
| Spanish | 105 | 1.95%, see rank | 10.98% | 11.57% |
| Other Indo-European Languages | 119 | 2.21%, see rank | 6.73% | 4.61% |
| Asian and Pacific Islander Languages | 14 | 0.26%, see rank | 2.84% | 3.24% |
| Other | 0 | 0.00%, see rank | 0.93% | 0.94% |
ACS 2006-2010 data
Total population: 13,582
| Illinois Valley Central Unit School District 321 | % | Illinois | U.S. | |
| English | 5,082 | 93.47%, see rank | 78.83% | 79.95% |
| Spanish | 193 | 3.55%, see rank | 10.86% | 11.42% |
| Other Indo-European Languages | 136 | 2.50%, see rank | 6.72% | 4.60% |
| Asian and Pacific Islander Languages | 26 | 0.48%, see rank | 2.73% | 3.14% |
| Other | 0 | 0.00%, see rank | 0.85% | 0.89% |
ACS 2005-2009 data
Total population: 11,870
| Illinois Valley Central Unit School District 321 | % | Illinois | U.S. | |
| English | 4,371 | 94.30%, see rank | 79.10% | 80.35% |
| Spanish | 135 | 2.91%, see rank | 10.68% | 11.21% |
| Other Indo-European Languages | 112 | 2.42%, see rank | 6.82% | 4.62% |
| Asian and Pacific Islander Languages | 10 | 0.22%, see rank | 2.58% | 2.95% |
| Other | 7 | 0.15%, see rank | 0.82% | 0.87% |
* 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.