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Wilderness Statistics Reports

Number of Wilderness Acres Legislated by Year
Year Acreage Legislated
1964 9,139,721
1968 792,750
1969 161,500
1970 199,132
1972 913,937
1974 343,991
1975 1,354,974
1976 1,745,580
1978 5,501,075
1980 60,755,145
1982 21,841
1983 320,373
1984 8,230,100
1985 13,300
1986 71,333
1987 189,745
1988 1,798,759
1989 733,400
1990 2,770,524
1991 36,085
1992 400,450
1993 674,760
1994 7,661,089
1996 37,936
1997 160
1999 49,819
2000 1,031,706
2002 529,584
2004 802,840
2005 21,183
2006 1,009,764
2008 106,577
2009 2,094,702
2012 -222
2014 278,177
2015 275,665

Total 110,067,455

Figure above shows the number of acres legislated each year. Note: Legislated acres may not be equal to current reported acres for each area. Click here to learn more about legislated and reported acreages. Read our data disclaimer. Data last updated on 6/27/17 (National Park Service acreages updated to be consistent with the 2016 Wilderness Report (corrections to Ireteba Peaks and Stephen Mather)).



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