As of August 2014, the most recent postage rate increase for a one-ounce first-class stamp was implemented on Jan. 26, 2014. The $0.03 increase brought the price up to $0.49. More »

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For domestic and international mailing rates, USPS.com has the most up-to-date rate charts. Any recent changes are listed, as well as retail and commercial pricing for Priority Mail, First class, Express and many other m... More »

Effective January 26, 2014, the standard U.S. postage rate for a first-class letter is 49 cents. A letter can weigh up to 1 ounce, and the rate for each additional ounce is extra 21 cents. More »

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As of June 2014, the base rate of a U.S. first-class postage stamp is 49 cents. This rate applies to standard-sized mailings weighing 1 ounce or less. Twenty-one cents is added for each additional ounce. More »

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The postage stamp rate was 37 cents for the first ounce of mail from June 30, 2002, until Jan. 7, 2006. The stamp featured either a flag or antique toy on it when it was 37 cents. More »

As of Jan. 26, 2014, U.S. Postal Service stamps for first class letters weighing up to 1 ounce increased from 46 cents to 49 cents in the United States. Each additional ounce for a regular piece of mail adds 21 cents to ... More »

The cost of a first-class postage stamp was $0.05 in 1963. Adjusting for inflation, this price would equal $0.38 in 2012 dollars, which was 7.5 cents cheaper than the actual price of a stamp purchased in 2012. More »

www.reference.com Business & Finance Mail & Shipping Postal Services