The Union County Jail is located on the north-side of the courthouse at 50 NW 1st Street in Lake Butler. Historically, the original jail for Union County was constructed circa 1922. Around 1936, Union County constructed the brick courthouse at the present day location. By 1950, the "old jail" was dismantled and a new one was built on the site of the present day jail.

The years ahead provided for renovations as Union County grew. The current day jail is a 36 bed facility housing both convicted and non-convicted offenders, felony and misdemeanor crimes. The jail is part of the Sheriff's automated reporting system providing real-time civial and criminal court paperwork to expedite the criminal justice process. Additionally, the jail operates the laser automated fingerprint system tied to the National Crime Information Center and the Florida Department of Law Enforcement. The county jail participates in the automatic notification of victims of certain crimes by way of the V.I.N.E.S. network when an offender is released

The county jail booking facility also houses the Sheriffs' alcohol breath testing equipment used by deputy sheriff's as well as the Florida Highway Patrol.

Visiting hours are Thursday and Friday of each week from 1:00pm until 3:00pm. Visiting is allowed on one of these days and is restricted to immediate family only. Anyone visiting the facility is subject to search pursuant to Florida State Statute. For more information, you may contact the jail administrator at 386-496-2501.