Sonoma County Main Adult Detention (MADF)

County Jail

Last Updated: November 09, 2022
2777 Ventura Ave, Santa Rosa, CA 95403

Sonoma Co MADF is for County Jail offenders sentenced up to twenty four months.

All prisons and jails have Security or Custody levels depending on the inmate’s classification, sentence, and criminal history. Please review the rules and regulations for County - medium facility.

The phone carrier is Global Tel Link (GTL) - ConnectNetwork, to see their rates and best-calling plans for your inmate to call you.

If you are unsure of your inmate's location, you can search and locate your inmate by typing in their last name, first name or first initial, and/or the offender ID number to get their accurate information immediately Registered Offenders

Satellite View of Sonoma County Main Adult Detention (MADF)

Sonoma County Main Adult Detention (MADF) basic information to help guide you through what you can do for your inmate while they are incarcerated. The facility's direct contact number: 707-565-1400

The Sonoma County Main Adult Detention (MADF) is a medium-security detention center located at 2777 Ventura Ave Santa Rosa, CA which is operated locally by the Sonoma County Sheriff's Office and holds inmates awaiting trial or sentencing or both. Most of the sentenced inmates are here for less than two years. Sonoma County accepts inmates from surrounding towns, municipalities, the US Marshal's Service and the Santa Rosa Police Department who do not have their own long-term lock-up.

The Sonoma County Sheriff's Office Detention Division is responsible for the processing, care, and management of individuals held in lawful detention. With a staff of over 300 employees, the Detention Division is committed to serving the people of the State of California and County of Sonoma by providing a secure, safe, and humane environment for both the staff and inmates.

The Detention Division's goals in support of this mission are:

  • To comply with California Minimum Jail Standards and all other applicable federal, state, and local laws and the standards set forth by the California Medical Association;
  • To apply the principles of direct supervision as developed by the National Institute of Corrections;
  • To develop and support staff through constructive supervision, leadership and training, and maintenance of high employment standards;
  • To offer inmates an opportunity for rehabilitation through participation in religious, educational, recreational, vocational, and work programs;
  • To release inmates back into the community in better condition medically & psychologically than when they came into custody;
  • To manage our resources in a professional, efficient, and cost-effective manner;
  • To foster a custodial environment that supports positive inmate behavior and provides discipline for misconduct.

Inmate Locator

Sonoma County Main Adult Detention (MADF) publishes the names of their inmates currently in their facility in California. Your search should start with this locator first to see if your loved one is there.

The second box is the InmateAid Inmate Search. This database of inmates is user-generated content for the purpose of accessing and utilizing any or all of the InmateAid services. If you need our assistance creating your own inmate profile to keep in touch, email us at and we will assist you in locating your inmate.

As a last resort, you might have to pay for that information if we do not have it. The Arrest Record Search will cost you a small amount, but their data is the freshest available and for that reason they charge to access it.

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Covid Visitation Information

As of March 18, 2020, registration and visitation rules have changed to protect inmates at Sonoma County Main Adult Detention (MADF) and their loved ones during the COVID-19 outbreak. At this time, there are no in-person visits for family and friends due to the COVID-19 situation. Video visitation is available; details can be found below or call 707-565-1400.


  • All visits through the video visitation system require the visitor to establish a user account.

Visitation Information

Sonoma County Main Adult Detention - Visitation

Non-Contact Visiting:

  • Inmates booked with the last name beginning with A-L will visit on Saturday and Monday for all visiting times. There will also be a half-day visiting on Wednesday. Visiting times on Wednesday for A-L will be 10:15 am, 11:00 am, 1:00 pm, 1:40 pm, 2:20 pm, and 3:00 pm.
  • Inmates booked with the last name beginning with M-Z will visit on Sunday and Tuesday for all visiting times. There will also be a half-day visiting on Wednesday. Visiting times on Wednesday for M-Z will be 4:25 pm 7:00 pm, 7:45 pm, 8:30 pm, 9:15 pm, and 9:50 pm
  • The following holidays will have visiting, and the hours will follow the Wednesday schedule: New Year’s Day, Independence Day, Thanksgiving Day and Christmas Day
  • All visits are ½ hour in duration.
  • Inmates may receive one visit per visitation day.
  • Module Workers are eligible to receive two 30-minute visits per day on their visiting day. Visits can be consecutive if time and space permits.

Morning (Time frames listed in parentheses indicate sign-in time)

  • 10:15 (9:30-9:50)
  • 11:00 (10:15-10:35)


  • 1:00 (12:15-12:35)
  • 1:40 (1:10-1:25)
  • 2:20 (1:50-2:05)
  • 3:00 (2:30-2:45)
  • 4:25 (3:55-4:10)


  • 7:00 (6:20-6:40)
  • 7:45 (7:05-7:25)
  • 8:30 (7:50-8:10)
  • 9:15 (8:35-8:55)
  • 9:50 (9:10-9:30)


  • Shorts, skirts and dresses must be as long as the bottom of the fingertips when arms are placed atside.
  • No bare midriffs or low-cut tube tops, or revealing tops.
  • No tank tops
  • No sports team attire or gang insignias.
  • No bandanas, beanies, hairnets or hats.
  • No steel-toed boots or shoes that will not clear the metal detector.

If you are unsure about your attire’s acceptability, you want to dress as if you were going to court. Final determination of clothing will be made by Lobby staff.

General Information:

  • Visitors may only fill two seats in the visiting booths. Small children (40 inches or smaller) may be held on a visitor’s lap. Children over 40 inches must occupy a seat and will be counted as a visitor as required by occupancy rating.
  • All visitors, 18 years and older, must have a valid and current California Driver’s License, California Identification Card, Driver’s License/ID from another state, Passport, Military ID, Consular Card or Immigration Card. No other forms of ID will be accepted.
  • Minors (age 17 and under) Adults with minors must supervise them at all times. If the adult visitor is the minor’s parent, they must bring the minor’s birth certificate. If the adult visitor is a legal guardian, they must present court papers showing they are the legal guardian. If the adult visitor is neither the parent or legal guardian, they must provide a notarized letter from a parent or legal guardian permitting the visit along with the minor’s birth certificate or official court document. Emancipated minors are allowed to visit with original court documentation as proof of emancipation. Photocopies of the above documents are not acceptable.
  • Convicted felons who wish to visit must have prior written approval from the Facility Manager or their designee.
  • If you are a recently released inmate of the Detention Division, you must wait for 30days from the day of your release before returning to visit unless you are visiting your spouse. Items Allowed: Locker or Vehicle key or remote, visitor’s pass, eyeglasses, baby-bottle if needed (must clear metal detector) and any emergency medications. Items Not Allowed: Weapons of any kind, cigarettes, lighters, full sets of keys, knives, cell phones, hats, excessive jewelry, toys, and writing implements. Visitors are required to secure all of their property in the lockers provided in the lobby or in their vehicles, use is at own risk. Visitors must be able to clear the metal detector to visit. Lockers are cleared nightly after visiting. Any items left in a locker after visiting hours are complete will be disposed of. Any person who appears to be under the influence of alcohol or any controlled substance will not be allowed to visit. Appropriate behavior and conduct will be required at all times.


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Ask The Inmate

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