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US Postage Rates and Stamp Prices

These pages answer what it costs to mail something in the United States today, and what the stamps already in your drawer are still good for. Every price is taken from the US Postal Service's own price list or announcement, with the date it took effect. Collectors run into postage questions constantly: whether a sheet of 1970s stamps can still go on an envelope, what an old Forever stamp is worth now, and why a stamp that cost 41 cents mails a letter that costs 82 cents. The answers are here, alongside links to the pages on stamps that are worth far more than their postage.