how much does first class mail cost

how much does first class mail cost depends on the weight and size of the mailpiece, as well as the destination. As of recent USPS pricing, a standard First-Class Mail letter (weighing up to 1 ounce) costs around $0.66 within the United States, with an additional $0.24 per extra ounce. Postcards cost slightly less, while larger envelopes (flats) and small parcels have higher rates. First-Class Mail is generally used for personal correspondence, lightweight packages, and time-sensitive deliveries that do not require the speed of Priority Mail. It includes delivery in 1–5 business days for domestic service and optional tracking for packages. Rates can change annually, so always consult the USPS website for current pricing.