The data for 2014 is a 5-year average (2010–2014) from the Census Bureau's American Community Survey.
In 1990, 2000, and 2010–2014 the share includes those who received a bachelor's or higher degree.
For 1970 and 1980, the share of adults who are college graduates includes those who completed at four or more years of college regardless of degree earned.
Data source: US Census Bureau. Small Area Income & Poverty Estimates
Compiled by The County Information Program, Texas Association of Counties
Sources: US Census Bureau, 1980, 1990, 2000 Censuses of Population, and the 2010–2014 American Community Survey.
Downloaded from US Department of Agriculture Economic Research Service