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As of December 24, 2025, the United States Postal Service made changes that will affect the way mail is considered “on time.”
What does this mean for Caroline County residents?
The issue at hand has to do with the postmark date. According to the USPS website, “Postmarks are generally applied by the Postal Service via automation on machines in processing facilities or manually applied by employees at those facilities.” So, the official postmark date for a piece of mail is the date that said mail is processed by a regional facility, not the actual date that it was dropped in the mailbox.
As for the recent changes, USPS states that, “while we are not changing our postmarking practices, we have made adjustments to our transportation operations that will result in some mailpieces not arriving at our originating processing facilities on the same day that they are mailed.” This means that even if you put your tax documents in the big blue bin precisely on April 15, the parcel will most likely be postmarked for a later date. In the eyes of the law, you’re late. This could have repercussions for other important correspondence, like mail-in ballots or bill payments.
APPLIED STUDY
Caroline Review.News conducted an unscientific study to test when a letter mailed from each of Caroline’s 10 post offices would be officially postmarked at the closest regional processing facility in Baltimore.
A regular letter size piece of mail addressed to the same address out of state was placed in mail receptacles on January 13, 2026, at each post office* before the last posted mail pickup time.
For all 10 Caroline County post offices, every piece of mail was postmarked in Baltimore on January 14, 2026, the following date. Nine of the letters arrived at the destination address on January 17, 2026, and one from Preston arrived on January 21, 2026.
The results indicate that if you have a piece of mail in which the official postmark is important to comply with a rule, law, or regulation, it’s best not to procrastinate!
If you do find yourself in a bind, you can go to any USPS retail counter and request that the staff manually postmark or “hand-cancel” your mail on that date from that post office location.
*The 10 Caroline County post offices are: Marydel, Henderson, Templeville, Goldsboro, Greensboro, Ridgely, Hillsboro, Denton, Preston, and Federalsburg.
