Below are the links to the boundaries and spheres of influence maps for the board-governed county service areas within San Bernardino County:

County Service Area 18 Map
County Service Area 20 Map
County Service Area 29 Map
County Service Area 30 Map
County Service Area 40 Map
County Service Area 42 Map
County Service Area 53 Map
County Service Area 54 Map
County Service Area 56 Map
County Service Area 59 Map
County Service Area 60 Map
County Service Area 63 Map
County Service Area 64 Map
County Service Area 68 Map
County Service Area 69 Map
County Service Area 70 Map
County Service Area 73 Map
County Service Area 79 Map
County Service Area 82 Map
County Service Area 120 Map
County Service Area SL-1 Map

For more information, please visit the San Bernardino County Special Districts Department website.