| Year | Mexican origin | Non-Mexican Hispanics |
|---|---|---|
| 1850 | 73.8% | 26.2% |
| 1860 | 81.1% | 18.9% |
| 1870 | 76.6% | 23.4% |
| 1880 | 75.2% | 24.8% |
| 1900 | 72.9% | 27.1% |
| 1910 | 75.7% | 24.3% |
| 1920 | 77.3% | 22.7% |
| 1930 | 77.6% | 22.4% |
| 1940 | 75.6% | 24.4% |
| 1950 | 73.8% | 26.2% |
| 1960 | 69.5% | 30.5% |
| 1970 | 60.7% | 39.3% |
| 1980 | 59.4% | 40.6% |
| 1990 | 61.2% | 38.8% |
| 2000 | 59.3% | 40.7% |
| 2006 | 64.1% | 35.9% |
| 2007 | 64.3% | 35.7% |
| 2008 | 65.7% | 34.3% |
| 2009 | 65.5% | 34.5% |
| 2010 | 64.9% | 35.1% |
| 2011 | 64.6% | 35.4% |
| 2012 | 64.2% | 35.8% |
| 2013 | 64.1% | 35.9% |
| 2014 | 64.0% | 36.0% |
| 2015 | 63.3% | 36.7% |
