how much is a united states stamp?
<answer> The cost of a United States stamp is 6 cents, and a postcard stamp cost 5 cents. <context> How much did a postage stamp cost in 1970? A: In 1970, a first-class postage stamp in the United States cost 6 cents, and a postcard stamp cost 5 cents. The first-class postage rate was raised to 8 cen... Full Answer >