Tex. Spec. Dist. Code § 8864.054
(a) To qualify as a candidate for or serve as director at large, a person must be:
(b) To be a candidate for or serve as director from a county commissioners precinct, a person must be:
Added by Acts 2013, 83rd Leg., R.S., Ch. 112 (S.B. 1026), Sec. 1.05, eff. April 1, 2015.