The Legislature hereby declares as its policy that all of the territory of the state shall be included within a community college district, except that territory located within a county where the county residents accounted for fewer than 350 units of average daily attendance in the state’s community colleges during the preceding fiscal year. The territory located within such a county may be included within a community college district pursuant to the procedures prescribed by Article 2 (commencing with Section 74130) of Chapter 2.