Per USA TODAY, delivery for first-class mail is expected to take five days maximum. The two to five day range for USPS Ground Advantage is also expected to stay the same, while certain postal ...

As a result of the changes, the Postal Service says some regions and local areas will receive 2-3-day turnaround service ... performance at the five-digit level, as current standards are based on ...

The following is a list of how service standards will be changed, according to the Postal Service fact sheet: Moving from a 3-digit to 3-digit zip code pairing ... A USPS map is available online ...

Though the changes are intended to cut costs and improve efficiency, millions of Americans could also see a decline in certain services.