The Chair of the Los Angeles County also called Chair of the Los Angeles County Board of Supervisors and sometimes called the Mayor of Los Angeles County is responsible for the day-to-day operations of the county government. The chair is the presiding officer for the Los Angeles County Board of Supervisors.
The Chair of Los Angeles County serves a term of one year. Upon expiration of the term the duties of the Chair are rotated among the board members by order of seniority until 2015 when the board unanimously move the rotation by order of district. When Chair Pro Tem Sheila Kuehl announced her retirement at the end for her supervisorial term her term would expire before her Chair term would begin Janice Hahn was selected to be Chair and Lindsey Horvath was Chair Pro Tem allowing Horvath to become Chair the following year and Kathryn Barger was selected to be Chair Pro Tem to resume district rotation of the County Chair. The term for a supervisor typically lasts four years, any member will get to serve as chair at least once during the duration of their term. During his or her term of office, the chair has the option of calling himself or herself âÂÂmayorâÂÂ, a practice that was started by Michael D. Antonovich during his tenure as a supervisor. This tradition was not continued by the current incumbents.
On November 12, 2024, Los Angeles County voters passed Measure G, which amends the Los Angeles County Charter to create an elected County Executive, which will replace County Chair and CEO in 2028 when the office of County Executive is created.
These are the chairs/mayors of the Los Angeles County Board of Supervisors:
"The Mayor/Chair shall possess the powers and perform the duties prescribed, as follows:
"At noon on the first Monday in December, in the even-numbered years, the Chair Pro Tem shall automatically succeed to the position of Chair to serve until the election or succession of his/her successor; in the event there is no Chair Pro Tem, the Board shall elect a Mayor/Chair to serve for the said period. If the term of the Mayor/Chair expires in an odd-numbered year, the succession or election as provided herein of the new Mayor/Chair shall take place at 9:30 a.m. the first Tuesday following the first Monday in December. Upon the succession of the Chair Pro Tem to the position of Mayor/Chair."
Chair John J. Morton Lost Re-election to the Board of Supervisors
Charles Prager was appointed to finish Chair Morton term
Chair W.F. Cooper Lost Re-election to the Board of Supervisors
Charles Prager was appointed to finish Chair Cooper term between 1882 - 1883 before being elected for a 2 year term between 1883 - 1885.
Chair John J. Hamilton Lost Re-election to the Board of Supervisors
Chair Frank L. Shaw resign as he was elected Mayor for Los Angeles City