Priority Mail: 2-3 business days
Priority Mail Express: 1-2 business days
First-Class Mail: 3-5 business days
Retail Ground: 2-8 business days (depending on the specific destination in Pennsylvania)
These delivery times are estimates and may vary depending on factors such as weather conditions, peak shipping periods, and any unforeseen delays in the postal system. For the most accurate delivery estimates, you can use the USPS's postage calculator tool which takes into account the specific origin, destination, weight, and dimensions of the mail item.