Supervisorial District Boundaries from 1971

Boundary of the County of Los Angeles

This dataset contains Reporting Districts (RDs) for all Law Enforcement Jurisdictions in the County of Los Angeles, including Police and Sheriff. Reporting Districts form the basis of crime reporting, organizing crimes into specific areas. This file was originally created by Don Campbell at the LA County Emergency Operations Center over a number of years for the Sheriff Emergency Operations Bureau (EOB) in consultation with various agencies.

Dates:

Sheriff reporting districts are as of October 2015
LAPD reporting districts are as of March 2015

This dataset shows the boundaries of public safety answering points - the geographic boundaires that determine where an emergency call is routed. A Public Safety Answering Point (PSAP) is a state-managed local center where all 911 calls are routed. They are typically located at a local or county level. There are 4,459 PSAPs in the U.S. At the PSAP, trained emergency personnel receive 911 calls and make decisions as to what emergency service to dispatch in order to best accommodate the situation (fire, ambulance, etc).This file contains ESN numbers. An Emergency Service Number (ESN) (XXX) is assigned to the subscriber's telephone number in the tandem office translations The ESN represents a seven digit number by which the tandem office routes the call to the proper PSAP. PSAPs with ALI capabilities also receive a display of the ESN information which shows which police, fire and rescue agency serves the telephone number calling 911. An ESN is a unique combination of police, fire, and rescue service for purposes of routing the E911 call.This dataset also include ORI numbers. An ORI (Originating Agency Identifier) is a nine character identifier assigned to an agency that has met the established qualifying criteria for a fingerprint based background check.

Service Planning Areas (SPAs) are used by a number of County departments (Public Health, Health Services and Mental Health) to plan and manage service delivery across the County. SPAs are aggregated from Census Tracts in order to connect them to demographic information.
The SPAs in this dataset are based upon 2010 Census Tracts and were created in 2012.

Regional Center administrative boundaries for LA County. These centers serve individuals with development disabilities and their families (see http://www.dds.ca.gov/RC/RCList.cfm for more information).

School District Boundaries for Los Angeles County.

Please note: There are two types of school distrricts. The first type is a split district - a school district that separates the elementary school districts from the middle and high school district. The second type, a unified school district, combines all three types of schools.

In this dataset each unified district has its own polygon, and the split districts have a polygon for each combination of elementary and middle/high school district.

The DCFS Office Service Areas shape file (as of July 1, 2009) was derived from the LA County ZIP Codes from the County Registrar’s Office. The service areas data are used by the 18 DCFS Regional Offices to provide services and resources to the children and families of the different geographic areas of LA County.

Parcel shapes from the 2015 Assessor Tax Roll

Parcel shapes from the 2014 Assessor Tax Roll