Census 2000:

1
Census 2000 The Redistricting Summary Data
(Public Law 94-171)
2
Redistricting Data Program

• Public Law 94-171 enacted in 1975
• Outgrowth of 1960s court decisions on
  One-Person/One-Vote and 1965 Voting Rights Act
• State legislatures can receive data according to
  local definitions to ease planning new district
  boundaries
• First look at racial/ethnic profile of local
  community

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Data Items Included

• Total Population
• Hispanic/Latino Origin
• Race
• Voting Age Population

4
Public Law 1 (PL1) Data Table Race
5
Public Law 2 (PL2) Data Table Hispanic or
Latino, and Not Hispanic or Latino by Race
6
Public Law 3 (PL3) Data Table Race for the
Population 18 Years and Over
7
Public Law 4 (PL4) Data Table Hispanic or
Latino, and Not Hispanic or Latino by Race for
the Population 18 Years and Over
8
Office of Management and Budget Race Categories

• American Indian or Alaska Native
• Asian
• Black or African American
• Native Hawaiian or Other Pacific Islander
• White
• Some other Race
• -----------
• Two or More Races

9
Race Items of Interest

• Respondents could choose more than one category
• Total possibility of 63 racial categories
• Hispanic/Latino origin cross-tabulation equals
  126 possible racial/ethnic categories
• In a National Content Survey on Race in 1996,
  1.2 reported multiracial
• In 1998 Dress Rehearsal, 5.4 of Sacramento, Ca.
  respondents were of multiple races

10
Maximum Combination of Six Racial Categories

• 6 racial categories
• 57 combinations of two or more races
• 63 Possible combinations

11
Two or More Races

• Category where all multiple-race responses are
  grouped together
• This category, together with the 6 single-race
  alone categories, will add up to 100 of the
  population
• The result is that direct comparisons back to
  1990 racial categories CANNOT be made

12
Population Data Summary Levels In Public Law
94-171 File

• Counties
• County subdivisions
• Places (incorporated and census designated)
• Census tracts
• Census block groups
• Census blocks
• Voting districts
• State house and state senate districts
• - where provided

13
Census Geography Overview
14
Data Accessibility

• Data provided to states on CD-ROM, with software
  to view, print, download items
• Delivered by April 1, 2001 to governor,
  majority/minority legislative leaders
• Census Maps /TIGER/Line files delivered to state
  officials prior to March 1, 2001
• P.L. 94-171 redistricting data publicly
  accessible on www.census.gov

15
Accessibility Methods

• File Transfer Protocol (FTP)
• For downloading complete dataset files
• Will be available at http//ftp2.census.gov
• American FactFinder
• Quick Tables
• Geographic Comparison Tables
• Detailed Tables
• CD-ROMs
• Maps, TIGER/Line

16
Media Type FTP vs AFF vs CD-ROM

• FTP AFF CD
• Difficulty High Low Low
• Cost No No Yes
• User Level High All All
• Speed Variable Variable High
• Connect Issues Possible Possible Unlikely
• Download limits None 5 megs CD size
• Graphical User Interface None Yes Yes

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http//ftp2.census.gov
Begin by selecting the file you want to download
Then save the file down to your PC
18
Using your Windows Explorer open the zipped files
Use unzip software available for free at
www.winzip.com or www.pkunzip.com
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20
Geographic Comparison Tables
Quick Tables
Data Sets
21
Downloading Data in American FactFinder
22
Redistricting Summary Data CD-ROM
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Maps and TIGER/Line

• Three map types in three formats
• Census Tract Outline
• Paper (8.5 x 11), PDF off the web, HPGL on
  demand
• Voting District Outline Maps
• Voting district outline (no state legislative
  district) on Paper, PDF off the web, and HPGL on
  demand
• County Block Maps
• Includes voting district and legislative district
  boundaries and codes
• Paper, PDF off the web, and HPGL on demand

27
Census Tract Outline Maps
28
Voting district/state legislative district
outline maps
29
County Block Maps
30
TIGER/Line Files

• First TIGER/Line File to contain final Census
  2000 tabulation geography
• Legal areas with January 1, 2000 boundaries
• Census 2000 statistical areas (tracts, CDPs)
• Voting districts/legislative districts
• Tabulation census blocks

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For More Information

• www.census.gov
• Strength in Numbers Your Guide to Census 2000
  Redistricting Data From the U.S. Census Bureau -
  brochure
• What You Should Know About the Apportionment
  Counts - brochure
• Customer Service Center
• [phone]
• webmaster_at_census.gov