How long does it take for the US postal service to deliver a letter mailed in Nebraska to Washington State?

The delivery time for a letter mailed from Nebraska to Washington state via the U.S. Postal Service typically ranges from 2 to 5 business days, depending on the specific locations and the service used (such as First-Class Mail). Factors like weather, holidays, and processing delays can also affect delivery times. For the most accurate estimate, tracking the letter or checking the USPS website is recommended.