ZIP Codes are required on Express Mail, commercial First-Class
Mail,
First-ClassPackage Service, Periodicals, Standard Mail, Package Services and Parcel Select mailpieces,
all mail sent to military addresses within the United States and to APO and FPO addresses, official mail, Business Reply Mail, and merchandise return service mail.
Unless required above, ZIP Codes may be omitted from single-piece
price
First-ClassMail (including Priority Mail), single-piece
price Standard Post, and pieces bearing a simplified address.
First Class Mail is delivered in 3 to 5 days.
About three to five business days for first class mail.
About three to five business days for first class mail.
First class mail is delivered in 3 to 5 days
First class mail will be 3 to 5 business days.
first class mail is delivered in 3 to 5 days
First Class Mail is delivered in 3 to 5 days.
From three to five business days for first class mail.
About three to five business days using first class mail.
About three to five business days for first class mail.
First Class Mail is delivered in 3 to 5 days.
Yes - the ZIP was invented to help sort mail. If you have the correct ZIP code on the letter than the MLOCR will be able to match the address to the right place because each city has a unique ZIP Code.