(a) Contra Costa County contains the following public notice districts:

1. (1) Antioch District, which is comprised of the City of Antioch.
2. (2) Brentwood-Byron District, which is comprised of the City of Brentwood and the unincorporated areas known as Byron and Discovery Bay.
3. (3) El Cerrito-Kensington District, which is comprised of the City of El Cerrito and the unincorporated area known as Kensington.
4. (4) Mount Diablo District, which is comprised of the Cities of Clayton, Concord, Martinez, and Pleasant Hill.
5. (5) Oakley District, which is comprised of the City of Oakley and the unincorporated area known as Knightsen.
6. (6) Pinole-Hercules-Rodeo District, which is comprised of the Cities of Pinole and Hercules and the unincorporated area known as Rodeo.
7. (7) Pittsburgh District, which is comprised of the City of Pittsburgh and the unincorporated area known as Bay Point.
8. (8) Richmond District, which is comprised of the City of Richmond.
9. (9) San Pablo District, which is comprised of the City of San Pablo and the unincorporated areas known as Bayview, East Richmond Heights, El Sobrante, Montalvin Manor, North Richmond, Rollingwood, and Tara Hills.
10. (10) Walnut Creek-Danville District, which is comprised of the Cities of Danville, Lafayette, Moraga, Orinda, San Ramon, and Walnut Creek and the unincorporated areas known as Alamo, Contra Costa Centre, and Reliez Valley.

(b) For the purpose of publishing notice arising from a location within Contra Costa County that is not within one of the districts described in subdivision (a):

1. (1) If the location is within five miles of a district, notice shall be published in the nearest district.
2. (2) If the location is not within five miles of a district, notice shall be given as if the location is in a public notice district without a newspaper of general circulation.