In most modern jury systems, there is no single universal number of jurors; it depends on the country, the type of case, and even the specific court.

Short, direct answer

  • Traditionally, a trial jury is 12 people in many common-law countries.
  • Today, many courts use 6–12 jurors for trial juries, depending on the case and jurisdiction.
  • Grand juries (which decide on indictments, not guilt) often have 16–23 jurors in the United States.

Typical numbers by context

  • U.S. federal civil trials: A jury must start with at least 6 and no more than 12 members.
  • U.S. criminal trials (many states): Commonly 12 jurors , sometimes with 1–2 alternates.
  • Petit (trial) juries worldwide: Often 6–12 , and in some places up to 15.
  • Grand juries (U.S.): Typically 16–23 jurors.
  • Example of variation: Scotland uses 15 jurors in criminal trials, which is unusually large.

So if you just hear “a jury” with no context, people often mean a 12-person trial jury, but legally it can range from about 6 to 23 depending on whether it is a trial jury or a grand jury and which court is involved.

Information gathered from public forums or data available on the internet and portrayed here.