City boundaries managed by LA County Public Works. Unincorporated areas are not distinguished by name, other than labeled unincorporated.

This layer contains information for locating past and present legal city boundaries within Los Angeles County. The Los Angeles County Department of Public Works provides the most current shapefiles representing city annexations and city boundaries on the Los Angeles County GIS Data Portal. The Department also provides large format city annexation maps (pdf) on its FTP site. True, legal boundaries are only determined on the ground by surveyors licensed in the State of California. Numerous records are freely available at the Land Records Information website, hosted by the Department of Public Works.Principal attributes include:NO: corresponds with numbers on the tables displayed on City Annexation Maps.ANNEX_No: is a text version of the "NO" field listed above. Because this field is only used for the Long Beach and Los Angeles Annexation Maps, this value is null for all other cities.NAME: is the official name under which the annexation was filed.TYPE: is used to indicate which legal action occurred.A - represents an Annexation to that city.D - represents a Detachment from that city.V - is used to indicate the annexation was rendered Void or withdrawn before an effective date could be declared.33 - Some older city annexation maps indicate a city boundary declared 'as of February 8, 1933'.ANNEX_AREA: is the land area annexed or detached, in square miles, per the recorded legal description.TOTAL_AREA:is the cumulative total land area for each city, arranged chronologically.SHADE: is used by some of our cartographers to store the color used on printed maps.INDEXNO: is a matching field used for retriving documents from our department's document management system.STATE (Secretary of State): Date filed with the Secretary of State.COUNTY (County Recorder): Date filed with the County Recorder.EFFECTIVE (Effective Date):The effective date of the annexation or detachment.CITY: The city to which the annexation or detachment took place.FEAT_TYPE: contains the type of feature each polygon represents:Land - Use this value for your definition query if you want to see only land features on your map.Water - Polygons with this attribute value represent internal navigable waters. Examples of internal waters are found in the Long Beach Harbor.3NM Buffer - Per the Submerged Lands Act, the seaward boundaries of coastal cities and unincorporated county areas are three nautical miles (a nautical mile is 1852 meters) from the coastline.

Boundaries of 1981 Supevisorial Districts

Supervisorial District Boundaries from 1971

Boundary of the County of Los Angeles

Shapefile that display street lights in Los Angeles County.

The key for the POLE_TYPE is as follows:
C – Concrete pole
F – Fiber glass pole
S – Steel pole
W – Wood pole
HSL – Steel pole (highway safety light)
SUP – most of these lights are on wood poles (supervisorial lights)