As used in this chapter:
County free libraries established pursuant to Chapter 2 (commencing with Section 27151) of Division 20 of the Education Code; areas receiving county fire protection services pursuant to Section 25643 of the Government Code; and county road districts established pursuant to Chapter 7 (commencing with Section 1550) of Division 2 of the Streets and Highways Code, shall be considered "special districts" for all purposes of this chapter.
"Special district" does not include a city, a county, a school district or a community college district. "Special district" does not include any agency which is not authorized to levy a property tax rate, except the Bay Area Pollution Control District.
Ca. Gov. Code § 16271