New York City is the most populous city in the United States, with an estimated 8,491,079 people living in the city, according to U.S. Census estimates dating July 1, 2014 (up from 8,175,133 in 2010; 8.0 million in 2000; and 7.3 million in 1990).
, Minor obsession with world stamps. 1  It is currently worth $.47 US. 2  Forever stamps are designed to be the equivalent of whatever the current price of a first class stamp is, no matter when the stamp was purchased. In other words, if you bought a forever stamp in 1983 for $.25, it is worth $.47 today.
In 2007, the United States Postal Service unveiled the Forever stamp, a non-denominated stamp that can be used, as its name implies, forever. Even when the cost of a stamp fluctuates, a forever stamp can still be used to mail a letter that weighs one ounce or less within the U.S. with no additional postage necessary. As an example, in 2013, it cost $0.46 to mail a letter weighing one ounce or less within the United States.