StacksVerified U.S. regulatory reference

39 CFR Part 121, Appendix A

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov

The following tables reflect the service standard day ranges resulting from the application of the business rules applicable to the market-dominant mail products referenced in §§ 121.0 through 121.4 (for purposes of part 121, references to the contiguous states or the contiguous 48 states also include the District of Columbia):

Table 1. End-to-end service standard day ranges for mail originating and destinating within the contiguous 48 states and the District of Columbia.

Mail classEnd-to-end range (days)
First-Class Mail0-5
Periodicals3-6
USPS Marketing Mail4-7
Package Services4-7

Table 2. End-to-end service standard day ranges for mail originating and/or destinating in non-contiguous states and territories.

Mail classEnd-to-end range (days)
Intra-state/territoryInter-state/territory
First-Class Mail0-5 | 2-5
Periodicals3-6 | 3-27
USPS Marketing Mail4-7 | 4-28
Package Services* 4-7 | 4-29

* Excluding bypass mail.

Table 3. Destination-entry service standard day ranges for mail to the contiguous 48 states and the District of Columbia.

Mail class | Contiguous states

Destination entry (at appropriate facility) range (days)

* DDU* DLPC* DRPDC
Periodicals11 | 2
USPS Marketing Mail23-4 | 5
Package Services12 | 3

* DDU = Destination Delivery Unit; DLPC = Destination Local Processing Center; DRPDC = Destination Regional Processing and Distribution Center or Campus.

Table 4. Destination entry service standard day ranges for mail to non-contiguous states and territories.

Mail classDestination entry (at appropriate facility)
* DDU range (days)* DLPC range (days) | * DRPDC range (days)
Alaska** Hawai'i, Guam, NMI, & AS | ** PR & USVI | Alaska | Hawai'i, Guam, NMI, & AS | PR & USVI
Periodicals1 | 1-3 | 1-4 | 1-3 | 10-11 | 10 | 8-10
USPS Marketing Mail2 | 3-4 | 3-5 | 3-5 | 14 | 13 | 12
Package Services1 | 2 | 2-3 | 2-3 | 12 | 11 | 11

* DDU = Destination Delivery Unit; DLPC = Destination Local Processing Center; DRPDC = Destination Regional Processing and Distribution Center or Campus.

** AS = American Samoa; NMI = Northern Mariana Islands; PR = Puerto Rico; USVI = United States Virgin Islands.