The board rotated the position to district five commissioner Bernest Brooks by a six to one vote.
Brooks will hold the chairmanship until November, 2006.
He was first elected in 1992 and has previously "criticized" the commission for not allowing a black to serve as its chairman.
Brooks "thanked" his colleagues Monday for their overwhelming support.
The board unanimously approved district six commissioner Jim Thompson as vice chairman.
On the rotation basis, Thompson is expected to be elected chairman by the board next year.