usps ground advantage vs first class compares two shipping options under the USPS umbrella. First-Class Package Service was recently merged into the new Ground Advantage, which now covers lightweight packages under 70 lbs. The key benefit is unified pricing and service for both letters and parcels. Ground Advantage includes tracking and $100 insurance, offering better value than the previous separate services. It streamlines logistics for both individual shippers and businesses. Delivery time typically ranges from 2–5 business days. This change simplifies the USPS offering while maintaining cost-effectiveness and service coverage.