Districts & Data Downloads
Current Supervisorial District Maps
- 2001 Supervisorial Districts (PDF) – Click here
- 1st Supervisorial District (14 MB PDF) – Click here
- 2nd Supervisorial District (12 MB PDF) – Click here
- 3rd Supervisorial District (11 MB PDF) – Click here
- 4th Supervisorial District (10 MB PDF) – Click here
- 5th Supervisorial District (15 MB PDF) – Click here
GIS Layers and Data Sets
We encourage you to use the GIS layers and data sets with the County’s online redistricting software. The information is also available for download, as indicated below:
GIS layers
| Name | File Name | File / Download |
| Redistricting Geography | ||
| RDU (Redistricting Unit)Community | rdu_v6.shpcomm_v6.shp | redistricting_geo.zip |
| Reference Layers | ||
| County FacilitiesSupervisor Residence Area2001 Supervisorial DistrictsCities and Communities
LA City Council Districts Congressional Districts State Assembly Districts State Senate Districts School Districts May 2009 Special Election Results for Judy Chu and Gil Cedillo, California 32nd Congressional District |
County_Facilities.shpSupervisor_Residence_Area.shpSupervisorial_districts_2001.shpCities_and_Communities.shp
LA_City_Council_Districts.shp Congressional_Districts.shp State_Assembly_Districts.shp State_Senate_Districts.shp School_Districts.shp may2009_sp_election_ca_32_congress.shp |
reference_layers.zip |
| Education Level (% of adult age 25 or up without high school diploma or equivalent)Poverty Level (% of households below poverty level)English Fluency Level (% does not speak English well)
Primary Household Languages (Arabic, Armenian, Chinese, Cambodian, English, Farsi, Korean, Russian, Spanish, Tagalog, Vietnamese, and Other) indicated in percentage |
Demographic_Reference.shp | Demographic_reference.zip |
| Election Reference | Election Reference.zip |
Data Tables
| Name | File Name (MS Excel Format) | File / Download |
| RDU to Community Listing (for reference purpose) | RDU_COMM_LST | rdu_comm_lst.xlsx |
| Population and Socio-Economic data | ||
| Census – Race/Ethnicity Population,Voting Age Population (part1). | 01_PL94_PT1 | 01_PL94_PT1.xlsx |
| Census – Voting Age Population (part2).American Community Survey (ACS)Voting Age Gender Population,Citizen Voting Age Population,Citizen Voting Age Gender Population,Homeowner/Renter Population,
Home Value Ranges, Household Income Ranges. |
02_PL94_PT2 | 02_PL94_PT2 |
| County – Voter Registration Population | 03_REGDATA | 03_REGDATA.xlsx |
| Elections data | ||
| 2010 General (11/2/2010) | 04_RDU_RESULTS_G10 | 04_RDU_RESULTS_G10.xlsx |
| 2010 Primary (6/8/2010) | 05_ RDU_RESULTS _P10 | 05_RDU_RESULTS_P10.xlsx |
| 2008 General (11/4/2008) | 06_ RDU_RESULTS _G08 | 06_RDU_RESULTS_G08.xlsx |
| 2008 Primary (6/3/2008) | 07_ RDU_RESULTS _P08 | 07_RDU_RESULTS_P08.xlsx |
| 2008 Presidential Primary (2/5/2008) | 08_ RDU_RESULTS _PP08 | 08_RDU_RESULTS_PP08.xlsx |
| 2006 General (11/7/2006) | 09_ RDU_RESULTS _G06 | 09_RDU_RESULTS_G06.xlsx |
| 2006 General-OtherStatewide | RDU_RESULTS_G06_OTHERSW | RDU_RESULTS_G06_OTHERSW.xlsx |
| 2006 Primary (6/6/2006) | 10_ RDU_RESULTS _P06 | 10_RDU_RESULTS_P06.xlsx |
| 2006 Primary-OtherStatewide | RDU_RESULTS_P06_OTHERSW | RDU_RESULTS_P06_OTHERSW.xlsx |
| 2004 General (11/2/2004) | 11_ RDU_RESULTS _G04 | 11_RDU_RESULTS_G04.xlsx |
| 2004 Primary (3/2/2004) | 12_ RDU_RESULTS _P04 | 12_RDU_RESULTS_P04.xlsx |
| 2002 General (11/5/2002) | 13_ RDU_RESULTS _G02 | 13_RDU_RESULTS_G02.xlsx |
| 2002 Primary (3/5/2002) | 14_ RDU_RESULTS _P02 | 14_RDU_RESULTS_P02.xlsx |