InmateAid Ask the Inmate Letters & Photos Postcards & Greeting Cards Discount Calls Maryland Showing 41–45 of 80 results Sort by: Random Newest first Oldest first Title A-Z Title Z-A Random MD DOC – Maryland Correctional Pre-Release System (MCPRS) Featured 410-799-1363, 877-839-8655 MD DOC – Baltimore Pre-Release Unit (BPRU) Featured 410-234-1878 St. Mary’s County Detention Center Featured 301-475-4200 Baltimore Jail Featured 443-263-2220 Howard County MD Detention Center (ICE) Featured 410-313-5200 ← Prison and Jail Direcory → Letter