A large number of inmates (over 30%) are currently housed in jails; a facility that often holds 2,000 or more prisoners and is operated under a joint agreement between two or more government units.

regional

Explanation:

Regional jail is a facility that operates under the control and agreement of two or more governments, and therefore are funded by the participating units, according to their arrangement

These facilities have cooperating agreements that state their shared budgets, administration, policies, and maintenance agreement.  The representatives of the joint government are also present within the jail board.

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