General Prison Information Official Prison Name: Allenwood U.S. Penitentiary Prison Code: ALP Prison Type: U.S. Penitentiary Region: Northeast Region State: Pennsylvania Security Level: High Contact Information Here is the street address and mailing address for Allenwood U.S. Penitentiary. Use the mailing address if you are sending a letter or package to an inmate at Allenwood […]
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