usps ground shipping rates are based on the weight, dimensions, and destination of the package. USPS Ground Shipping is an affordable and reliable option for sending larger parcels or non-urgent deliveries. This service typically takes 2-8 business days for delivery, depending on the origin and destination. Rates for USPS Ground Shipping are lower than for expedited services like Priority Mail, making it a budget-friendly choice for businesses looking to save on shipping costs. The USPS Ground service is ideal for e-commerce retailers who need to send larger items or bulk shipments. Ground shipping is often preferred for items that do not require speedy delivery, and the rates are competitive when compared to other ground carriers.