National Jail Census, 1970

This census provides information on county and municipal
jails facilities in the United States and their administration. For
all jails, the data
include number of prisoners and their reason for being held, age and
sex of prisoners, maximum sentence that could be served in the
facility, facility capacity and age, types of security available, and
operating expenditures. For jails in counties and municipalities with
populations of 25,000 or more, data are supplied on quarterly jail
population, age of cells, and availability of service facilities and
programs for inmates.