Cost of stamps in the 60's?

Answer 1

The cost of a First Class stamp in the U.S. between 1964 and 1967 was 5 cents. From 1968 until 1969 it was 6 cents.

Answer 2

{| |- | The average would have been around 5 cents. For the first couple of years it was 4 cents. It ended the decade at 6 cents for the first ounce. |}

Answer 3

The cost of a First Class US postage stamp in 1960 was 4 cents. It was raised to 5 cents in 1963. It went up to 6 cents in 1968.