Matthew Johnsen is (or was recently) an inmate currently at the San Bernardino County - Adelanto Detention Center, located in Adelanto,CA. If you are wishing to visit, the visitation hours are limited by the security level of the facility; please call 760-530-9300 to get the latest updates on the visiting application requirements as they change without notice.
If you are going to be speaking with inmate Johnsen, you will need to open a Securus Tech® account. The calls are either $6.50 or $3.15. If you are being charged the higher rate, you might want to look into the InmateAid Discount Phone service to get the lower rate.
If you want to write inmate Johnsen, you can use the Send Letters or Send Postcards link to send them safely and quickly. If you need the mailing address, it is:
You can also use the Greeting Card link during the holidays, too. It’s so easy, convenient and very affordable. There is no reason to miss sending them holiday cards.
Please note that our Ask the Inmate feature will answer many of your questions or concerns. Browse the topics and read the answers. If you have a question, you’ll get a response soon after. We can really help you and your inmate get through this.