| ADMINISTRATORS | ||
| Tom Maythew, Coastal Counties Director | ||
| Sidney Anderson, Coastal Counties Director | ||
Jan. 1, 1951 | J.C. Tippett, Coastal Counties Director | |
| Aug. 28, 1958 to Dec. 31, 1977 |  | Lee C. Benson, Coastal Counties Director |
| Oct. 1, 1980 to May 1, 1989 |  | Richard D. Teague, Northern Regional Director |
| May 1, 1989 to Aug. 15, 1989 |  | Ray Lyon, Acting Northern Regional Director |
| Aug. 15, 1989 |  | Terrell P. Salmon, Northern Regional Director |
1999 |  | Kimberly A. Rodrigues, North Coast and Mountain Regional Director |
| 2013 |  | Bill Frost, Associate Director of Cooperative Extension and the Agricultural Experiment Station, Director ANR Research & Extension Center System |
| ADVISORS | ||
| July 1913 to Sept. 1918 | Andrew Christiansen, Farm Advisor (First Farm Advisor in CA) | |
| Sept. 1918 to May 1919 | Earl Dobbs | |
| July 1919 to June 1931 |  | J.W. Logan, D.V.M., County Agricultural Agent |
| Dec. 1919 | B.C. Bougher, Farm Advisor | |
| 1921 | William E. Gilfillian, Assistant Farm Advisor | |
| 1922 | J.W. Dognall, Assistant Farm Advisor | |
| Jan. 1922 to June 1923 | W.F. Carroll, Assistant Farm Advisor (B.S. UC) | |
| Aug. 1927 to 1955 |  | Harry B. Tucker, Assistant Dairy Farm Advisor 4-H Advisor to 1948 |
| 1930 to Jan. 1937 | F.R. Wilcox, Extension Economist (Started UC employment August 1927 in Ag Extension) | |
| Dec. 1931 to July 1961 |  | William Douglas Pine, Farm Advisor, County Director Retired July 1961 – Argriculturist Emeritus |
| Oct. 1944 to Dec. 1945 | Marguerite Seybert, Food Preservation Asst. | |
| Nov. 1946 to Feb. 1970 |  | Ruth Esther Crawford, Home Advisor Home Economist Emeritus |
| July 1947 to Dec. 1982 |  | John Valentine Lenz, Farm Advisor County Director December 1982 Retired December 1982 – Emeritus |
| 1948 to June 1964 | Walter E. Fieg, Farm Advisor/4-H Advisor Killed in plane crash June 20, 1964 | |
| October 1948 to June 1949 | Frances Saliger, Home Economics/4-H Advisor Resigned June 1949 to marry John Lenz | |
| July 1949 to July 1951 |  | Aloha L. Ohm, Home Economics |
| August 1951 to July 1955 |  | Gloria Lambert (Cooney), Home Advisor |
| August 1953 to Sept. 1968 | Walter Spivey | |
| October 1953 to July 1955 | W.B. McHenry, Extension Asst. | |
| Nov. 1954 to Nov. 1956 |  | Coral Kay “Corky” Beckman, Home Advisor/4-H Advisor |
| Dec. 1954 to 1959 | Earl H. Olsen, Farm Advisor Retired October 1980, Emeritus – November 1982 | |
| Dec. 1954 to Sept. 1955 | John L. Launchbaugh, Range/Forestry | |
| October 1955 to April 1963 |  | William Elmer Dent, Farm Advisor |
| Nov. 1955 to June 1957 | John A. Wagenknecht, Extension Asst. | |
| Nov. 1955 to Nov. 1975 |  | Duahne William Cooper, Farm Advisor |
| July 1957 to Nov. 1967 |  | Katherine Welker, Home Economics Emeritus – December 1967 |
| August 1957 to March 1967 |  | John R. Dunbar, Farm Advisor |
| Dec. 1958 to August 1961 |  | Clarence Chestnutt, Jr., Farm Advisor |
| June 1961 to Oct. 1, 1992 |  | Charles M. Lawrence, Dairy Farm Advisor |
| May 1964 to May 1971 |  | Robert Franklin Krohn, Forestry Advisor |
| July 1964 to Sept. 1966 |  | Lealand L. Adler, 4-H Advisor |
| Nov. 1966 to August 1985 |  | Charles Robert Hilgeman, 4-H Advisor |
| Jan. 1969 to Dec. 1984 |  | Ralph S. “Murph” Westing, Farm Advisor |
| Nov. 1969 to April 1, 1991 |  | Evelyn A. Wunderlich, Home Advisor/4-H Advisor 4-H Youth Advisor, January 1972 Acting County Director, October 1982 County Director, April 1983 |
| Nov. 1971 to Oct. 1986 | Paul C. Smith, Forest Advisor Emeritus – November 1986 | |
| Jan. 1976 to 2006 |  | Gary Markegard, Range/Livestock Farm Advisor |
| July 1978 to Nov. 1978 | Marta Elva Ochoa (Stuart), 4-H Youth Training | |
| Jan. 1979 to June 1979 | Nicolas DeGeorges, Marine Advisor | |
| August 1979 to 2010 |  | Jim Waldvogel, Marine Advisor |
| Jan. 1981 to 1991 |  | Christopher Toole, Marine Advisor |
| July 1984 to June 2017 |  | Deborah D. Giraud, Plant Science Farm Advisor Emeritus |
| June 1985 to Dec. 1988 |  | Gregory A. Giusti, Farm/4-H Advisor, Del Norte Emeritus |
| April 1986 |  | Kathleen A. Baer, 4-H Program Representative |
| April 1986 |  | Merritt L. Brodt, 4-H Program Representative |
| June 1988 to Dec. 1990 |  | Richard R. Harris, Forest Advisor |
| June 1989 to 1994 | Steven E. Etter, Farm/4-H Advisor | |
| 1992 to 2012 |  | Susan Schlosser, Marine Advisor |
| 1993 | G.E. Barnhardt, NR Youth Advisor, Hoopa | |
| March 1993 to 1999 | | Kimberly A. Rodrigues, County Director Forestry Advisor, July 1991 |
| 1991 to 2001 |  | Teresa McAllister, 4-H Advisor |
| 1998 to June 2002 | Elaine Fenton, 4-H Program Representative | |
| 1999 to Jan. 2003 | Debbie Carpenter, Food Stamp Nutrition Education Program | |
| Nov. 2000 to present |  | Yana Valachovic, Forest Advisor and Humboldt - Del Norte County Director |
| June 2002 to June 2007 |  | Ken Andersen, Dairy & Ag Waste Advisor |
| Oct. 2002 to June 2014 |  | Sandy Sathrum, 4-H Program Representative Retired |
| March 2005 to 2008 |  | Peter Nelson, Marine Fisheries Advisor |
| May 2007 to Aug. 2009 |  | Alan Bower, Livestock Advisor |
| January 2012 to 2023 |  | Dorina Espinoza, Youth, Families and Communities Advisor |
| Nov. 2011 to present |  | Lenya Quinn-Davidson, Forest Health; Area Fire Advisor (2016 to present) |
October 2012 to 2020 2024-present |  | Jessica Rebholtz, Community Education Specialist, Expanded Food and Nutrition Education Program |
| November 2013 to present |  | Jeff Stackhouse, Livestock and Natural Resources Advisor |
UCCE Humboldt - Del Norte Counties