How much postage for 1.125 oz letter?

As of my last update, the postage for a letter weighing 1.125 ounces would typically require the rate for a letter weighing between 1 and 2 ounces. In the U.S., this is usually around $0.78 (using First-Class Mail rates). However, postage rates can change, so it's advisable to check the latest rates on the USPS website or at your local post office for the most accurate information.