U.S. Federal Endangered and Threatened Species by Calendar Year

Note: This report counts all U.S. species listed as threatened or endangered under the Endangered Species Act of 1973 (with amendments) and its precursors (Endangered Species Preservation Act of 1966 and Endangered Species Conservation Act of 1969). The count for each year is the number of species added to the list in that year. The status of a species may change after it is listed, either from threatened to endangered or from endangered to threatened; however, this report counts only the date of the first listing. Furthermore, a species may have subsequently been delisted. Therefore, if the number of species listed each calendar year is added up, that total will be different than the total number of species currently listed under the Endangered Species Act. Experimental populations, and foreign species are not included. Distinct population segments (DPS) are included, as are species listed due to similarity of appearance and joint U.S./foreign listings (those that are listed in the U.S. and an adjacent country). Species listed by National Marine Fisheries Service (NMFS) (which has authority under the Endangered Species Act to list marine species) are also included. The effective date (as given in the Federal Register notice) is used to determine in which Calendar Year a species is counted.

Calendar Year Number of Species Listed
2018 2
2017 11
2016 74
2015 31
2014 66
2013 89
2012 51
2011 19
2010 54
2009 6
2008 2
2007 1
2006 16
2005 10
2004 8
2003 2
2002 11
2001 10
2000 41
1999 34
1998 64
1997 79
1996 92
1995 18
1994 129
1993 68
1992 82
1991 80
1990 41
1989 32
1988 47
1987 60
1986 36
1985 59
1984 32
1983 7
1982 11
1981 4
1980 16
1979 38
1978 42
1977 21
1976 36
1975 11
1973 7
1972 3
1970 55
1967 72