The sheriff of each county or city shall be the keeper of the jail thereof unless that locality is a member of a jail or jail farm board or regional jail authority, in which case the provisions of § 53.1-106 shall apply.
Sheriffs to be keepers of jails
Va. Code Ann. § 53.1-116.2, under Chapter 3. Local Correctional Facilities..
Va. Code Ann. § 53.1-116.2