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Address Information System (AIS) Area/District 3-Digit and 5-Digit ZIP Code™ Assignments
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Data Files
03/02/2026
AISU Contact Information (AISUADDR.TXT)

Data Files
03/02/2026
AISU ZIP Code File (AISUZIPS.TXT)

Data Files
03/02/2026
AISU ZIP Code Record and AISU Address Record Descriptions (AISULOUT.TXT)

Data Files
03/02/2026
3 Digit ZIP/AISU Office List (AISUREPT.TXT)

Data Files
03/02/2026
AMS County Name Table (COUNTY_NAME_TABLE.TXT)

Data Files
03/02/2026
AIS County Name Table Layout (AISCNTY.TXT)

Data Files
03/02/2026
AIS Congressional District File (CONG_DIST.TXT)

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