Jefferson County Historical Language Spoken at Home Data
ACS 2010-2014 data
Total population: 17,102
| Jefferson County | % | Iowa | U.S. | |
| English | 6,174 | 89.66%, see rank | 92.20% | 79.39% |
| Spanish | 166 | 2.41%, see rank | 3.98% | 11.75% |
| Other Indo-European Languages | 235 | 3.41%, see rank | 1.97% | 4.52% |
| Asian and Pacific Islander Languages | 267 | 3.88%, see rank | 1.36% | 3.36% |
| Other | 44 | 0.64%, see rank | 0.50% | 0.99% |
ACS 2008-2012 data
Total population: 16,791
| Jefferson County | % | Iowa | U.S. | |
| English | 6,108 | 89.25%, see rank | 92.29% | 79.64% |
| Spanish | 228 | 3.33%, see rank | 4.07% | 11.57% |
| Other Indo-European Languages | 215 | 3.14%, see rank | 2.03% | 4.61% |
| Asian and Pacific Islander Languages | 204 | 2.98%, see rank | 1.21% | 3.24% |
| Other | 89 | 1.30%, see rank | 0.41% | 0.94% |
ACS 2006-2010 data
Total population: 16,643
| Jefferson County | % | Iowa | U.S. | |
| English | 6,197 | 90.79%, see rank | 92.46% | 79.95% |
| Spanish | 182 | 2.67%, see rank | 3.99% | 11.42% |
| Other Indo-European Languages | 234 | 3.43%, see rank | 2.04% | 4.60% |
| Asian and Pacific Islander Languages | 210 | 3.08%, see rank | 1.15% | 3.14% |
| Other | 3 | 0.04%, see rank | 0.36% | 0.89% |
ACS 2005-2009 data
Total population: 15,496
| Jefferson County | % | Iowa | U.S. | |
| English | 6,434 | 93.98%, see rank | 92.60% | 80.35% |
| Spanish | 177 | 2.59%, see rank | 4.00% | 11.21% |
| Other Indo-European Languages | 182 | 2.66%, see rank | 2.03% | 4.62% |
| Asian and Pacific Islander Languages | 45 | 0.66%, see rank | 1.08% | 2.95% |
| Other | 8 | 0.12%, see rank | 0.28% | 0.87% |
US Census 2000 data
Total population: 16,181
| Jefferson County | % | Iowa | U.S. | |
| English | 6,257 | 94.08%, see rank | 92.50% | 81.14% |
| Spanish | 109 | 1.64%, see rank | 3.68% | 10.21% |
| Other Indo-European Languages | 188 | 2.83%, see rank | 2.62% | 5.22% |
| Asian and Pacific Islander Languages | 64 | 0.96%, see rank | 0.94% | 2.61% |
| Other | 33 | 0.50%, see rank | 0.25% | 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.