Visiting, mail, money and calls at Montgomery County Detention Center / Cpu

What we could confirm for Montgomery County Detention Center / Cpu. Each item names its source and the day it was checked; check the source before you travel or send money.

How to look someone up

The facility's own search, the wider list and the phone number
Search the facility's own inmate list: Records Information Inmate Locator. It is the source of record.
Linked from montgomerycountymd.gov, checked Oct 15, 2026
Call Montgomery County Detention Center / Cpu at (240) 777-9960 with the person's full name and date of birth.
Number shown on montgomerycountymd.gov, checked Oct 15, 2026

Visiting

How to schedule a visit and the rules
Visiting rules and scheduling are on the facility's own page: Inmate Visiting Inmate Visiting at Montgomery County Detention Center.
Linked from montgomerycountymd.gov, checked Oct 15, 2026

Sending mail

Where the mail rules are posted
The facility's mail rules and mailing address: Mail / Correspondence Inmate Mail.
Linked from montgomerycountymd.gov, checked Oct 15, 2026

Phone and video calls

Which phone service and how calls work
Phone account and call rules: Telephone Inmate Phone Calls.
Linked from montgomerycountymd.gov, checked Oct 15, 2026

Commissary

Where to order and what is sold
Linked from montgomerycountymd.gov, checked Oct 15, 2026

Address and phone

Where it is and how to reach it
Street address: 1307 Seven Locks Rd, Rockville, MD, 20854 (also shown on its own site).
From HIFLD Prison Boundaries, a public federal facility dataset (data edited October 2025); matches montgomerycountymd.gov, checked Oct 15, 2026
Phone: (240) 777-9960 (also shown on its own site). People held here cannot take incoming calls.
From HIFLD Prison Boundaries, a public federal facility dataset (data edited October 2025); matches montgomerycountymd.gov, checked Oct 15, 2026
Read on montgomerycountymd.gov, checked Oct 15, 2026

How these things work in general: visiting, sending money, mail, phone calls.

Questions about Montgomery County Detention Center / Cpu

How do I find out if someone is in Montgomery County Detention Center / Cpu?

We do not collect a public roster for this facility. Use the facility's own inmate lookup to confirm whether someone is being held there.

Where is Montgomery County Detention Center / Cpu?

Montgomery County Detention Center / Cpu is in Rockville, Montgomery County, Maryland. The street address we have on file is 1307 Seven Locks Rd, Rockville, MD, 20854.

What is the phone number for Montgomery County Detention Center / Cpu?

The phone number we have on file is (240) 777-9960. People held there cannot receive incoming calls.

How do I visit someone at Montgomery County Detention Center / Cpu?

Many county jails hold most visits by video, either from a lobby kiosk or from home through an app, and some still offer in-person visits. Visits usually need to be scheduled in advance, and people who were just booked often cannot have visitors for the first day or two. Visiting days, hours and rules are posted on its visiting page, so check there before you go.

Can I call someone at Montgomery County Detention Center / Cpu?

No. People held at Montgomery County Detention Center / Cpu call out, and calls are paid collect, from their own account, or from a prepaid account you set up with the facility's phone provider. All calls are recorded, so do not discuss the case on the phone. The details are on its inmate phone page.

How do I send money to someone at Montgomery County Detention Center / Cpu?

Money goes into the person's account, often called a trust or commissary account, using their booking or inmate number. Facilities usually accept deposits through an approved online vendor, by phone, at a lobby kiosk or by money order. Never send cash in the mail. Ask Montgomery County Detention Center / Cpu which deposit service it uses before you send anything.

How do I send mail to someone at Montgomery County Detention Center / Cpu?

Address every letter with the person's full legal name and booking or inmate number, and put your full name and return address on the envelope. The street address we have on file is 1307 Seven Locks Rd, Rockville, MD, 20854. Many facilities use a different address or an outside mail-scanning service for inmate mail, so confirm the correct mailing address before you send anything. The rules are on its mail page.

Is searchinmates.org run by this facility?

No. searchinmates.org is a private website and is not affiliated with any government agency. We copy information from public sheriff and corrections sources, and it may be out of date. Always verify with the facility.

An arrest is not a conviction. Everyone is presumed innocent unless proven guilty. searchinmates.org is a private website, not affiliated with Montgomery County Detention Center / Cpu or any government agency.