The Federal Correctional Institution (FCI) in Sandstone, Minnesota, is a low-security facility for male offenders. In-person visits: FCI SANDSTONE FEDERAL CORRECTIONAL INSTITUTION 2300 COUNTY RD 29 SANDSTONE, MN 55072 Correspondence and parcels to inmates: INMATE NAME & REGISTER NUMBER FCI SANDSTONE FEDERAL CORRECTIONAL INSTITUTION P.O. BOX 1000 SANDSTONE, MN 55072 (Do not send funds to this address; for more information go to the Inmate Money page.) Shipping: Use this address when shipping freight and non-USPS parcels. At most facilities, freight deliveries are generally processed through the warehouse. STAFF NAME FCI SANDSTONE FEDERAL CORRECTIONAL INSTITUTION ATTN: WAREHOUSE 2300 COUNTY RD 29 SANDSTONE, MN 55072 Staff Mail: Use this address when sending correspondence and parcels to staff: STAFF NAME FCI SANDSTONE FEDERAL CORRECTIONAL INSTITUTION P.O. BOX 999 SANDSTONE, MN 55072