Data Files
01/08/2018
LACSLink® Zip Codes

This text file includes the cumulative listing of ZIP(C) Codes covered by the LACS database.

Data Files
11/04/2017
Address Information System (AIS) Area District Record Description

File layout for Address Information System (AIS) area district record descriptions.

Data Files
10/10/2017
CASS™ Cycle N - Stage 1 file processed with SHA 256 data
Data Files
10/01/2017
L607 3-Digit ZIP Code Sort Option for Drop-Ship Mailers

L607 lists the 5-digit ZIP Codes for machinable parcels eligible to be entered at designated SCFs when sorted into 3-digit containers. The corresponding rate eligibility and mail preparation standards are described in 456.2.2, 466.4.1, and 466.4.2.

 

Data Files
10/01/2017
L605 NDCs/ASFs: Nonmachinable Parcel Select

L605 describes the service area by individual 3-digit ZIP Code prefix for Parcel Select mailers preparing mailings of nonmachinable parcels.

 

Data Files
10/01/2017
L601 National Distribution Centers (NDCs)

L601 describes the service area by individual 3-digit ZIP Code prefix for sorting mail to NDC destinations.

 

Data Files
10/01/2017
L201 Periodicals Origin Split and First-Class Mail Mixed ADC/AADC

L201 describes the First-Class Mail surface transportation reach of an origin facility for use in preparing bundles and sacks of Periodicals mail (including Periodicals labeled "news") and in preparation of First-Class Mail mixed containers.

 

Data Files
10/01/2017
L012 5 Digit ZIP Scheme Combination

The 5-Digit ZIP Scheme Combination Labeling List contains a listing of 5-digit ZIP Code schemes. The schemes represent ZIP Codes that are processed and finalized on the same piece of equipment at the same time at USPS plants and delivery units. 5-Digit ZIP Scheme Combinations labeling list will enable qualification for 5-digit automation prices for letters by providing grouping of ZIP Codes to combine mailings that would appear in a single tray.

 

Data Files
10/01/2017
L005 3-Digit ZIP Code Prefix Groups: SCF Sortation

L005 describes the service area by individual 3-digit ZIP Code prefix for mail destined to a sectional center facility (SCF).

 

Data Files
10/01/2017
L004 3-Digit ZIP Code Prefix Groups: ADC Sortation

L004 describes the service area by individual 3-digit ZIP Code prefix for mail destined to an area distribution center (ADC).