postmark

1 of 2

noun

post·​mark ˈpōs(t)-ˌmärk 

: an official postal marking on a piece of mail

specifically : a mark showing the post office and date of mailing

postmark

2 of 2

verb

postmarked; postmarking; postmarks

transitive verb

: to put a postmark on

Examples of postmark in a Sentence

Verb

The package was postmarked 13 February.

Recent Examples on the Web

Noun

Some states require a postmark; others use the date of receipt. — Lee Moak, New York Daily News, 18 Sep. 2026

The division's announcement this week came after officials in the vote-by-mail states of Washington and Oregon said the number of ballots rejected for late postmarks was up sharply this year. — ABC News, 18 Sep. 2026

Verb

States remained in control of their voter lists and kept grace periods for mailed ballots postmarked by Election Day that arrive days later, which the GOP sought to end. — Bart Jansen, USA Today, 15 Sep. 2026

The data paralleled numbers in California, where during this year’s June primary about 93,500 voters had their ballots rejected because they were postmarked or arrived too late to be counted. — ABC News, 8 Sep. 2026

Word History

First Known Use

Noun

1678, in the meaning defined above

Verb

1716, in the meaning defined above

Rhymes for postmark

• ballpark
• benchmark
• birthmark
• daymark
• earmark
• embark
• hallmark
• landmark
• monarch
• remark
• skylark
• tetrarch

Kids Definition

postmark

noun

post·​mark

-ˌmärk

: a mark canceling the postage stamp on a piece of mail and giving the date and place of sending

postmark verb