Here are some general estimates:
1. First-Class Mail: First-Class mail typically takes 2-5 business days to be delivered within the continental United States, including California. However, it may take longer if there are any delays or disruptions during transit.
2. Priority Mail: Priority mail typically takes 1-3 business days to be delivered within the continental United States, including California. It offers faster delivery compared to First-Class Mail and comes with tracking and insurance options.
3. Express Mail: Express mail is the fastest shipping method offered by the USPS and is guaranteed to be delivered overnight or within two business days to most locations within the continental United States, including California. It also comes with tracking and insurance options.
Please note that these are general estimates and the actual delivery time may vary depending on the exact locations, weather conditions, and any unexpected events that could impact the mail transport process.