According to Data 360, the rate during that entire year for a first-class stamp was US$.15.
If you need the rate for other classes of postage, or need the rate for non-US postage, please ask other, more specific questions.
A first class postage stamp is 44 cents.
4 cents
Basic postage cost 4 cents.
The price of one US postage stamp sufficient to mail a one ounce letter to any destination within the US is $0.44. That price is likely to increase soon. Note also that there are a great variety of US postage stamps available for various purposes. You can buy a single stamp with a value of $0.01, but you can also but a single stamp with a value of $7.80, $10.00, even more.
The First Class Postage rate became 42 cents on 12 May 2008.
1st class postage stamp at this time is .42. (as of May 2008)
A first class postage stamp is 44 cents.
29
3cents
50
It was $0.33 for a first class postage stamp.
two bucks
33 cents.
4 cents
In general these are fairly common. Minimal value for this stamp indicates that the cost is in packaging and tracking and not the stamp itself. There are going to be specific issues with a bit more value, but you will have to identify the stamp and look it up in the catalog.
Basic postage cost 4 cents.
In the United States, in 1921, a first class postage stamp would've cost 2 cents.