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Jefferson County Historical Language Spoken at Home Data
ACS 2010-2014 data
Total population: 11,465
| Jefferson County | % | Montana | U.S. | |
| English | 4,332 | 96.33%, see rank | 94.20% | 79.39% |
| Spanish | 31 | 0.69%, see rank | 2.21% | 11.75% |
| Other Indo-European Languages | 94 | 2.09%, see rank | 2.01% | 4.52% |
| Asian and Pacific Islander Languages | 28 | 0.62%, see rank | 0.61% | 3.36% |
| Other | 12 | 0.27%, see rank | 0.97% | 0.99% |
ACS 2008-2012 data
Total population: 11,360
| Jefferson County | % | Montana | U.S. | |
| English | 4,403 | 96.79%, see rank | 93.70% | 79.64% |
| Spanish | 56 | 1.23%, see rank | 2.32% | 11.57% |
| Other Indo-European Languages | 62 | 1.36%, see rank | 2.32% | 4.61% |
| Asian and Pacific Islander Languages | 18 | 0.40%, see rank | 0.57% | 3.24% |
| Other | 10 | 0.22%, see rank | 1.10% | 0.94% |
ACS 2006-2010 data
Total population: 11,166
| Jefferson County | % | Montana | U.S. | |
| English | 4,216 | 95.21%, see rank | 93.50% | 79.95% |
| Spanish | 82 | 1.85%, see rank | 2.28% | 11.42% |
| Other Indo-European Languages | 69 | 1.56%, see rank | 2.47% | 4.60% |
| Asian and Pacific Islander Languages | 15 | 0.34%, see rank | 0.56% | 3.14% |
| Other | 46 | 1.04%, see rank | 1.18% | 0.89% |
ACS 2005-2009 data
Total population: 11,105
| Jefferson County | % | Montana | U.S. | |
| English | 3,440 | 94.07%, see rank | 93.33% | 80.35% |
| Spanish | 107 | 2.93%, see rank | 2.36% | 11.21% |
| Other Indo-European Languages | 67 | 1.83%, see rank | 2.58% | 4.62% |
| Asian and Pacific Islander Languages | 17 | 0.46%, see rank | 0.53% | 2.95% |
| Other | 26 | 0.71%, see rank | 1.20% | 0.87% |
US Census 2000 data
Total population: 10,049
| Jefferson County | % | Montana | U.S. | |
| English | 3,462 | 92.54%, see rank | 92.04% | 81.14% |
| Spanish | 127 | 3.39%, see rank | 2.62% | 10.21% |
| Other Indo-European Languages | 123 | 3.29%, see rank | 3.33% | 5.22% |
| Asian and Pacific Islander Languages | 16 | 0.43%, see rank | 0.54% | 2.61% |
| Other | 13 | 0.35%, see rank | 1.48% | 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.