Socrata

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Author
Mark Greninger
Description
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to that city.D - represents a Detachment from that city.V - is used to indicate the annexation was rendered Void or withdrawn before an effective date could be declared.33 - Some older city annexation maps indicate a city boundary declared 'as of February 8, 1933'.ANNEX_AREA: is the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.
Category
GIS Data
Tags
cities, boundaries, annexations
Rating
Current value: 0 out of 5
Data Provided By
LA County Department of Public Works
License
Public Domain
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Size
  • 500x425

  • 760x646

  • 950x808

Custom Size

425x425 is the minimum size

The Socrata Open Data API (SODA) provides programmatic access to this dataset including the ability to filter, query, and aggregate data. For more more information, view the API docs for this dataset or visit our developer portal

API Endpoint:

Field Names:

OBJECTID
objectid
NO
no
TYPE
type
ANNEX_AREA
annex_area
TOTAL_AREA
total_area
SHADE
shade
INDEXNO
indexno
Secretary of State
state
County Recorder
county
Effective Date
effective
CITY
city
REMARKS
remarks
NAME
name
ANNEX_No
annex_no
FEAT_TYPE
feat_type
SC
sc
ANNEX_TYPE
annex_type
COLOR_CODE
color_code
GlobalID
globalid
URL
url
created_user
created_user
created_date
created_date
last_edited_user
last_edited_user
last_edited_date
last_edited_date
COLOR_EGIS
color_egis
Shape.STArea()
shape_starea
Shape.STLength()
shape_stlength
the_geom
the_geom

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