How long does USPS take to deliver mail packages from Denver to Long Beach?

USPS delivery times from Denver to Long Beach typically range from 2 to 5 business days, depending on the service selected. First-Class Mail usually takes about 2-3 days, while Priority Mail can take 1-3 days. Factors such as weather, holidays, and package volume may also affect delivery times. For the most accurate estimate, it's best to check directly with USPS using the tracking number.