Visitation rules differ from county to county more than almost anything else in the system, but the structure is consistent enough to plan around.
You usually have to be approved first
Most facilities require visitors to be on an approved list before scheduling. The person in custody adds names; the jail runs a check. Approval can take a few days. Some facilities bar visitors with outstanding warrants, recent releases from that facility, or a conviction within a stated period.
In-person, video, or both
Many county jails have moved to video visitation, either from terminals in the lobby or remotely from a phone or computer. Remote video visits are typically paid by the minute. Where in-person visits still exist, they are usually non-contact, through glass, on a fixed schedule tied to the housing unit.
Scheduling
Visits are almost always scheduled in advance, often through the same vendor that handles commissary deposits. Slots for popular days fill quickly. Arriving late by even a few minutes commonly forfeits the visit entirely.
Identification and dress
Bring government-issued photo identification. Facilities routinely deny entry for clothing that is revealing, resembles inmate uniforms, contains gang references, or includes hoods and hats. Lockers or your vehicle are the only options for phones, bags and keys.
Children
Minors normally must be accompanied by a parent or legal guardian, and some facilities require a birth certificate to prove the relationship. Rules on whether children count against the visitor limit vary.
What gets a visit cancelled
Facility lockdowns, staffing shortages and medical quarantines cancel visits without notice. Call the day of the visit to confirm. Attempting to pass anything to the person in custody ends the visit and may end visiting privileges permanently.
Conversations are monitored
Assume every visit, video session and message is recorded and may be reviewed. Discussing the facts of a pending case during a visit is one of the most common self-inflicted injuries in criminal cases. Keep those conversations for the attorney, whose communications are privileged.
If a visit is denied
Ask specifically why. Denials are frequently administrative — an unapproved visitor list, an expired identification document, a scheduling conflict — and are fixable for the next attempt. Facility policy documents are usually published on the sheriff's website, and are worth reading once rather than guessing repeatedly.