It depends on the method you’re going to use. If it is shipped via USPS First-Class Mail, it will take 1-3 business days.
See USPS' A Customer's Guide to Mailing to know your options for mailing and help you choose the services that are best for you.
Check out this Quick Compare table for a summarized USPS mail and shipping services.
Tip! Find out some useful mailing hints for senders and recipients here.