Name Term Birth date (and age) John A. Knebel 1976–1977 (1936-10-04) October 4, 1936 (age 85) John R. Block 1981–1986 (1935-02-15) February 15, 1935 (age 87) Mike Espy 1993–1994 (1953-11-30) November 30, 1953 (age 68) Dan Glickman 1995–2001 (1944-11-24) November 24, 1944 (age 77) Ann Veneman 2001–2005 (1949-06-29) June 29, 1949 (age 72) Mike Johanns 2005–2007 (1950-06-18) June 18, 1950 (age 71) Ed Schafer 2008–2009 (1946-08-08) August 8, 1946 (age 75) Sonny Perdue 2017–2021 (1946-12-20) December 20, 1946 (age 75)