These districts were established when zoning was created for Los Angeles County many years ago. It was a way to break the county up into distinct areas, smaller units, for easier record keeping and organization. It is still in use to identify and keep track of those ordinances and for running queries against permits and ordinances. For a list of zoned districts or for other information on these districts, please refer to County Code 22.16 Zoned Districts and Maps. Updated 12/1/16 for a major annexation to Santa Clarita that went into effect on 11/15/16, and for slight changes in overall city/community boundaries.