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FIRST-CLASS MAIL LETTER 2017 POSTAGE RATES 2016 POSTAGE RATES INCREASE/DECREASE. First-Class Mail Letter (1 oz.) - Retail/Post Office Rate $0.49 $0.47 $0.02. Metered Mail (1 oz.) - Online Postage Providers and Postage Meters $0.46 $0.465 -$0.005. First-Class Mail Letter - each additional ounce $0.21 $0.21 NO CHANGE.
What is the price per ounce for postage? US Postage Rates: The first ounce is 44 cents. Each additional ounce (or fraction of an ounce) costs an additional 17 cents. So anything that weighs more than 1 ounce and â¦up to 2 ounces will be 61 cents.