St. Lucie County Commissioners serve four-year terms. Although Commissioners must reside in the districts they represent, they are chosen by a county-wide vote. The five-member board is chosen in two cycles, staggered by two years, with Districts 1, 3 and 5 running in one cycle and Districts 2 and 4 in the other.

The first County Commissioners were: W.R. Hardee, K.B. Raulerson, J.F. Bell, R.D. Holmes, P. Kroegel. The following is a reverse chronological list of all those who have served as a St. Lucie County Commissioner since its incorporation in 1905:  

Linda Bartz (2016 - Present)
Chris Dzadovsky (2008 - Present) 
Cathy Townsend (2016 - Present) 
Larry Leet (2022 - Present)
Jamie Fowler (2022-Present)

Frannie Hutchinson (1998 - 2006 & 2010 - 2022)
Sean Mitchell (2018 - 2022) 
Anthony Bonna (2018 - 2018 - Appointed by Gov. Rick Scott to fill vacant District 2 seat)
Tod Mowery (2010 - 2017 - Resigned prior to end of 2nd term for personal reasons)
Paula Lewis (1996 - 2016)
Kim Johnson (2012 - 2016)
Chris Craft (2004 - 2012)
Doug Coward (1998 - 2010)
Charles Grande (2006 - 2010)
Joseph Smith (2004 - 2008)
Cliff Barnes (1993 - 2004)
John Bruhn (1996 - 2004)
Gary D. Charles, Sr. (1995 - 1998)
Ken Sattler (1995 - 1998)
Havert  Fenn (1984 - 1996)
Denny Green (1993 - 1996) 
Judy Culpepper (1986 - 1994)
Dale Trefelner (1983 - 1994) 
Jack Kreiger (1985 - 1992)
Jim Minix (1985 - 1992) 
E.E. Green (1967 - 1986) 
Maurice Snyder (1981 - 1984) 
William Palmer (1981 - 1984)
W.R. McCain (1971 - 1982) 
Edward G Enns (1971 - 1980) 
John B. Park (1965 - 1980)
George D. Price (1971 - 1980)
Marjorie Silver (1963 - 1970)
Cody L. Bailey (1965 - 1968)
Baker (1965 - 1966)
Walter Hebb (1963 - 1965)
N.W. Jorgensen (1951 - 1964)
J.D. Nelson (1957 - 1964)
Melvin Shaffner (1961 - 1962)
E.L. Taylor (1957 - 1962)
C. Delaplane (1959 - 1960)
B.Y. Free (1957 - 1959) 
Doug Silver (1953 - 1958)
Harry Kicliter (1951 - 1958) 
Robert Griffin (1949 - 1956)
Robert W. Lennard (1949 - 1956) 
Lane H.  Jennings (1935 - 1952)
M.A. Patrick (1949 - 1950)
J.B. Brewer (1947 - 1950) 
Jimmie Barry (1941 - 1948)
J.R. Merritt (1937 - 1948) 
E.L. Taylor (1943 - 1946) 
D.J. Wilcox (1935 - 1946) 
H.E. Center (1937 - 1943)
J.M. Brewer (1937 - 1940)
J.B. Brewer (1933 - 1936) 
C.F. Ordway, Sr. (1933 - 1936) 
Severien Sorensen (1925 - 1936) 
Frank Upton, Sr. (1933 - 1935)
Harry Reynolds (1933 - 1934) 
J.G. Coats (1929 - 1933)
D.C. Cox (1925 - 1933) 
Robert Gladwin (1927 - 1932) 
C.H. Edwards (1929 - 1932)
R.R. Martin (1925 - 1928)
C.F. Raulerson (1919 - 1928) 
A.H. Warner (1923 - 1928) 
Don Forbes (1925 - 1926) 
G.A. Braddock (1923 - 1925) 
W.R. Hardee (1919 - 1925) 
A.B. Michael (1919 - 1922) 
N.C. Jorgensen (1919 - 1920) 
W.H. Merwin (1919 - 1920) (1921 - 1922) (1929 - 1932) 
D.E. Austin (1909 - 1918) 
Silas Long (1917 - 1918) 
R.E. Mudge (1917 - 1918)
E.F. Ulrich (1917 - 1918) 
J.J. Pitchford (1916 - 1917) 
S.J. Drawdy (1915 - 1916) 
N.C. Jorgensen (1913 - 1916) 
Richard Whyte (1913 - 1916) 
E.A. Holt (1911 - 1914) 
K.B. Raulerson (1913 - 1913) 
C.H. Edwards (1907 - 1912)  
A.N. Hoofnaughle (1909 - 1912)
Paul Kroegel (1905 - 1910) (1915 - 1916) 
R.E. McLaughlin (1909 - 1910) (1913 - 1914)
H.J. Baker (1907 - 1908) 
J.F. Bell (1905 - 1908) 
Peter Raulerson (1907 - 1908) (1911 - 1912)
W.R. Hardee (1905 - 1906) 
R.D. Holmes (1905 - 1906)
K.B. Raulerson (1905 - 1906)   

(Source: St. Lucie Almanac)