Voter rolls are a good source for “citizens” (must be a citizen to serve on a jury, except now the courts know that yes at times illegal immigrants and even foreign nationals legally in the country have served, which probably jeopardizes the whole case).
However, when I lived in Massachusetts I didn’t register (my conservative vote wasn’t going to go far) and I didn’t want the jury summons while in school. Didn’t have a driver’s license either. I still got a jury summons, they got my name and address from the utilities company.
I moved from Mass 15 years ago, I still received Jury Summons every three years, I still owned property in the State.