Based on information from the 1999 Census of Jails, a
sample of jail jurisdictions was selected for the 2002 survey. The
sample included all public and private jails in 876 selected jail
jurisdictions (in which there were a total of 940 reporting units) and
50 regional jails. The sample selection was designed to yield a
coefficient of variation of 1 percent of average daily population and
one-day inmate population. Large jails and regional jails were in the
sample with certainty.
All jail jurisdictions (i.e., counties, municipalities,
boroughs, etc.) identified through the 1999 Census of Jails.