I am interested in seeing how the demographics of juries compare with voters in the United States. Is anyone familiar with any research in this area? In a perfect world voters would be defined as "reported voters" however I will gladly accepted "reported registered to vote."
While it is only one data point and doesn't directly compare to voter registration pools (and hence is only a partial answer), a Master's Thesis comparing juries in 2000 and 2010 reached this conclusion (raw Chi square statistics omitted without indication) regarding jury pools in a Tennessee county in informative of the general trends:
[C]ompared to the 2008 Census data, the jury panels have a significantly higher percentage of White/Caucasians (83.2% vs. 74.1%, p < .01), and a higher percentage of males (53.1% vs. 46.8%, p =.015). Additionally, the participants were older (p < .01), had higher levels of income (p < .01), higher levels of education (p < .01). . . .
[C]ompared with the 2000 Census, the jury panels in 2000 had significantly more White/Caucasians (83.3% vs. 75.5%), p=.046. Additionally, the potential jurors from the previous studies tended to be older (p < .01), have higher levels of income (p < .01), and higher levels of education (p < .01). . . .
[T]he present jury pools are composed of citizens who are older, more male, more White/Caucasian, more likely to be married, have higher education levels, and have higher levels of income than 10 years ago. . . . In 2000, the typical juror was a 39-year-old White, female, who was married, with some college, and whose income was about $55,000 per year. In 2010, the typical juror is a 50-year-old White, male, who is married, with an associate‟s degree, and whose income is approximately $59,000 per year.
I believe it would depend upon the pool by which potential jurors are selected. In my locality it seems related to be the voter registration list, the driver’s license list, and the state ID list. Over the past 3 decades I've been picked a few times, and served once. In the times I did not serve, I was selected to serve in a county from which I had moved away, thereby making me ineligible to serve in that county. The odds here are about 1 in 20. Then you could start looking at the demographics that would exempt people from the list, or allow them to get out of doing it. Judges are automatically exempt from jury duty. To qualify here for jury duty, you must be a U.S. citizen, a resident of the county, at least 18-years-old, able to communicate in English. If you are a convicted felon, you have to have completed legal requirements to have your civil rights restored.