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Important USPS Change: Postmark Dates Now Reflect Processing, Not Drop-Off

Effective December 24, 2025, the United States Postal Service (USPS) changed how mail is postmarked. Postmarks now show the date your mail is processed at a postal facility—not the date you place it in a mailbox.

This means delays between when you drop off mail and when it is officially postmarked may occur more often.

Why This Matters

If you’re mailing something time-sensitive—like a tax filing or payment—on the due date, you could miss the deadline if your mail isn’t processed right away.

How to Protect Yourself

To ensure proof of timely mailing, take your item inside the post office and use one of these options:

-Request a hand-stamped (manual) postmark

-Obtain a Certificate of Mailing

-Send by certified or registered mail with a receipt

For more information, visit:

https://about.usps.com/what/strategic-plans/delivering-for-america/details.htm#fcps


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Tax Bills - USPS Mailing Information


View our helpful guides with tips to create and link accounts and make payments using the Portal & Payment Guides button below.

Additional Payment Options

The York County Board of Supervisors sets tax rates yearly in May. Semi-annual personal property tax bills and real estate tax bills are due on June 25 and December 5 each year. Supplemental tax bills are due within 30 days of the bill. For additional information, please review our Frequently Asked Questions.

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