USPS - RATES FOR DOMESTIC LETTERS SINCE 1863

Effective Date	Postage in cents per ½ ounce
July 1, 1863	3
October 1, 1883	2
	Postage in cents  per ounce*
July 1, 1885	2
November 2, 1917	3
July 1, 1919	2
July 6, 1932	3
August 1, 1958	4
January 7, 1963	5
January 7, 1968	6
May 16, 1971	8
March 2, 1974	10
December 31, 1975	13
May 29, 1978	15
March 22, 1981	18
November 1, 1981	20
February 17, 1985	22
April 3, 1988	25
February 3, 1991	29
January 1, 1995	32
January 10, 1999	33
January 7, 2001	34
June 30, 2002	37
January 8, 2006	39
May 14, 2007	41
May 12, 2008	42
May 11, 2009	44
January 22, 2012	45
January 27, 2013	46
January 26, 2014	49
April 10, 2016	47
January 22, 2017	49
January 21, 2018	50

*Beginning September 14, 1975, additional ounces were charged at a lower rate; the prices listed in this table are for the first ounce. Since July 15, 1979 a surcharge has been added for non-standard envelope sizes.