39 U.S.C. § 412 : US Code - Section 412: Nondisclosure of lists of names and addresses

Search 39 U.S.C. § 412 : US Code - Section 412: Nondisclosure of lists of names and addresses

(a) Except as specifically provided by subsection (b) or other
law, no officer or employee of the Postal Service shall make
available to the public by any means or for any purpose any mailing
or other list of names or addresses (past or present) of postal
patrons or other persons.
(b) The Postal Service shall provide to the Secretary of Commerce
for use by the Bureau of the Census such address information,
address-related information, and point of postal delivery
information, including postal delivery codes, as may be determined
by the Secretary to be appropriate for any census or survey being
conducted by the Bureau of the Census. The provision of such
information under this subsection shall be in accordance with such
mutually agreeable terms and conditions, including reimbursability,
as the Postal Service and the Secretary of Commerce shall deem
appropriate.