Yes, mail will continue to be delivered during a federal government shutdown.

The U.S. Postal Service (USPS) operates as an independent agency, funded primarily through postage and service revenues rather than taxpayer dollars or congressional appropriations. This self-funding model means USPS services, including mail delivery and post office operations, remain unaffected by lapses in federal funding that trigger shutdowns.

As of October 2, 2025—amid the ongoing partial shutdown that began on October 1—USPS has confirmed that all post offices are open for business as usual, and delivery schedules are unchanged. Disruptions to mail service are more likely to occur due to weather, holidays, or other non-shutdown factors, not government funding issues.

For context, this has held true in all 21 previous U.S. government shutdowns since 1976, including the 35-day shutdown of 2018–2019.