year	first class postage rate, cents (current)	first class postage rate, cents (2023 $)	CPI
1866	3	59.4	15.4
1867	3	63.7	14.3
1868	3	66.3	13.8
1869	3	69.2	13.2
1870	3	72.2	12.6
1871	3	77.2	11.8
1872	3	77.2	11.8
1873	3	78.8	11.6
1874	3	82.8	11.0
1875	3	85.9	10.6
1876	3	88.0	10.4
1877	3	90.0	10.1
1878	3	94.5	9.7
1879	3	94.5	9.7
1880	3	92.2	9.9
1881	3	92.2	9.9
1882	3	92.2	9.9
1883	2	62.7	9.7
1884	2	64.1	9.5
1885	2	65.4	9.3
1886	2	66.8	9.1
1887	2	66.1	9.2
1888	2	66.1	9.2
1889	2	68.3	8.9
1890	2	69.1	8.8
1891	2	69.1	8.8
1892	2	69.1	8.8
1893	2	69.9	8.7
1894	2	73.0	8.3
1895	2	74.8	8.1
1896	2	74.8	8.1
1897	2	75.8	8.0
1898	2	75.8	8.0
1899	2	75.8	8.0
1900	2	74.8	8.1
1901	2	73.9	8.2
1902	2	73.0	8.3
1903	2	71.4	8.5
1904	2	70.6	8.6
1905	2	71.4	8.5
1906	2	69.9	8.7
1907	2	66.9	9.1
1908	2	68.3	8.9
1909	2	69.1	8.8
1910	2	66.2	9.2
1911	2	66.2	9.2
1912	2	63.5	9.6
1913	2	61.4	9.9
1914	2	60.8	10.0
1915	2	60.2	10.1
1916	2	56.3	10.9
1917	2	47.5	12.8
1918	3	60.4	15.0
1919	2	35.0	17.3
1920	2	29.2	20.0
1921	2	34.4	17.9
1922	2	36.2	16.8
1923	2	35.4	17.1
1924	2	35.6	17.1
1925	2	34.4	17.5
1926	2	34.8	17.7
1927	2	35.2	17.4
1928	2	35.6	17.2
1929	2	35.2	17.2
1930	2	36.6	16.7
1931	2	40.3	15.2
1932	3	67.1	13.6
1933	3	69.6	12.9
1934	3	68.1	13.4
1935	3	66.6	13.7
1936	3	65.6	13.9
1937	3	62.9	14.4
1938	3	64.7	14.1
1939	3	66.1	13.9
1940	3	65.2	14.0
1941	3	62.1	14.7
1942	3	55.6	16.3
1943	3	52.4	17.3
1944	3	51.6	17.6
1945	3	50.4	18.0
1946	3	46.1	19.5
1947	3	41.1	22.3
1948	3	37.4	24.0
1949	3	38.5	23.8
1950	3	37.9	24.1
1951	3	35.2	26.0
1952	3	34.2	26.6
1953	3	34.0	26.8
1954	3	33.9	26.9
1955	3	34.0	26.8
1956	3	33.3	27.2
1957	3	32.2	28.1
1958	3	31.5	28.9
1959	4	41.7	29.2
1960	4	41.1	29.6
1961	4	40.6	29.9
1962	4	40.2	30.3
1963	5	49.5	30.6
1964	5	48.9	31.0
1965	5	48.1	31.5
1966	5	46.8	32.5
1967	5	45.5	33.4
1968	6	52.3	34.8
1969	6	49.6	36.7
1970	6	46.8	38.8
1971	8	59.8	40.5
1972	8	58.1	41.8
1973	8	54.9	44.4
1974	10	61.6	49.3
1975	10	56.1	53.8
1976	13	69.2	56.9
1977	13	64.8	60.6
1978	15	69.4	65.2
1979	15	62.4	72.6
1980	15	55.2	82.4
1981	18	59.8	90.9
1982	20	62.4	96.5
1983	20	60.9	99.6
1984	20	58.4	103.9
1985	22	62.1	107.6
1986	22	61.1	109.6
1987	22	58.8	113.6
1988	25	64.2	118.3
1989	25	61.1	124.0
1990	25	58.3	130.7
1991	29	64.8	136.2
1992	29	62.8	140.3
1993	29	61.1	144.5
1994	29	59.4	148.2
1995	32	63.8	152.4
1996	32	62.0	156.9
1997	32	60.6	160.5
1998	32	59.6	163.0
1999	33	60.2	166.6
2000	33	58.1	172.2
2001	34	58.3	177.1
2002	37	62.5	179.9
2003	37	61.2	184.0
2004	37	59.4	188.9
2005	37	57.6	195.3
2006	39	58.3	201.6
2007	41	59.9	207.3
2008	42	58.1	215.3
2009	44	62.1	214.5
2010	44	61.4	218.1
2011	44	59.2	224.9
2012	45	59.7	229.6
2013	46	59.9	233.0
2014	49	62.6	236.7
2015	49	62.4	237.0
2016	47	59.4	240.0
2017	49	60.9	245.1
2018	50	60.3	251.1
2019	55	65.2	255.7
2020	55	64.6	258.8
2021	55	61.3	271.0
2022	60	61.6	292.7
2022	63	63.0	302.2
2023 Jul	66	66.0	304.1