Category Archives: voting age

Citizen Voting Age Population by Block Group

.. tools and resources to access and analyze citizen voting age population by block group … ideally analysts and stakeholders will examine patterns and characteristics of the citizen voting age population (CVAP) by block group. This is partly because of the extreme variability of CVAP within higher level geography — even at the census tract level. This becomes even more important in more densely populated areas. See about ACS 2014 CVAP block group demographics in this related Web section.

Patterns of ACS 2014 CVAP Population by Block Group
— Houston Area
See legend in lower right of graphic for interval/color correspondence. Click graphic for larger view; expand browser window for best quality view.

.. view developed with ProximityOne CV XE GIS and related GIS project.

The size, characteristics and distribution of the citizen voting age population by block group is very important.
• Block groups are the most granular geography at which we can study these demographics.
• The size of the citizen voting age population ultimately determines election outcomes.

This section provides thematic pattern map views and analyses of selected metros. These applications can be replicated for any area. They serve as an “analytical basis” that can be augmented with other methods and data (e.g., voter registration, voter propensity, voter turnout, and other election factors) to gain insights into election outcomes under alternative scenarios. Equally important, this information can be used to better equip voters with the potential impact of improved voting activity for their own neighborhood and larger areas (e.g., even congressional districts).

Using these GIS Resources; Obtaining Custom Maps & Analyses
Contact us (or call 888.364.7656) for maps and analyses for areas of interest or to use the integrated, ready-to-use, national scope GIS software, GIS project and datasets. Add your own data; create custom views.

CVAP Block Group Thematic Pattern Map shown below for Selected Areas
• Atlanta
• Chicago
• Los Angeles
• Kansas City
• Washington, DC

Patterns of ACS 2014 CVAP Population by Block Group
— Atlanta Area
See legend in lower right of graphic for interval/color correspondence. Click graphic for larger view; expand browser window for best quality view.

.. view developed with ProximityOne CV XE GIS and related GIS project.

Patterns of ACS 2014 CVAP Population by Block Group
— Chicago Area
See legend in upper right of graphic for interval/color correspondence. Click graphic for larger view; expand browser window for best quality view.

.. view developed with ProximityOne CV XE GIS and related GIS project.

Patterns of ACS 2014 CVAP Population by Block Group
— Los Angeles Area
See legend in upper right of graphic for interval/color correspondence. Click graphic for larger view; expand browser window for best quality view.

.. view developed with ProximityOne CV XE GIS and related GIS project.

Patterns of ACS 2014 CVAP Population by Block Group
— Kansas City Area
See legend in lower right of graphic for interval/color correspondence. Click graphic for larger view; expand browser window for best quality view.

.. view developed with ProximityOne CV XE GIS and related GIS project.

Patterns of ACS 2014 CVAP Population by Block Group
— Washington, DC Area
See legend in lower right of graphic for interval/color correspondence. Click graphic for larger view; expand browser window for best quality view.

.. view developed with ProximityOne CV XE GIS and related GIS project.

ACS 2014 CVAP Block Group Demographics
For the 217,479 block groups covering the U.S. wall-to-wall, the median citizen population value is 1,165 (291.8 million population) and the median citizen voting age population is 885 (220 million population). The median total population is 1,252 (314 million population). These data are based on the 2014 American Community Survey ACS 2014 CVAP special tabulation completed in early 2016. WHile the focus here is on the total population, the same scope of data is integrated into the shapefiles used here for 13 race/origin population groups. The 13 race/origin groups include:
  • American Indian or Alaska Native Alone
• Asian Alone
• Black Alone
• Native Hawaiian or Other Pacific Islander Alone
• White Alone
• American Indian or Alaska Native and White
• Asian and White
• Black and White
• American Indian or Alaska Native and Black
• Remainder of Two or More Races
• not Hispanic
• Hispanic (of any race)

Related CVAP Sections
Census Tracts; ACS 2009-13 special tabulation
Census Tracts; ACS 2009-13 special tabulation – Hispanic focus
Tracts & Congressional Districts; ACS 2009-13 special tabulation

See this blog post in this full, more detailed Web section.

Join me in a Data Analytics Lab session to discuss more details about accessing and using wide-ranging demographic-economic data and data analytics. Learn more about using these data for areas and applications of interest.

About the Author
— Warren Glimpse is former senior Census Bureau statistician responsible for innovative data access and use operations. He is also the former associate director of the U.S. Office of Federal Statistical Policy and Standards for data access and use. He has more than 20 years of experience in the private sector developing data resources and tools for integration and analysis of geographic, demographic, economic and business data. Contact Warren. Join Warren on LinkedIn.

Voting Rights Act Demographics

Examining patterns of the citizen voting age population … the Voting Rights Act prohibits development of voting districts that discriminate against potential voters on the basis of race and/or language minority status. To examine how voting districts comply with the Voting Rights Act requires data on the citizen voting age population (CVAP) by race/origin for small geographic areas. The ACS 2013 5-yearCVAP special tabulation (released February 2015) provides these estimates for census tracts and block groups (and higher level geography). See the related Web section for more detail.

The CVAP estimates provide only one part of the required data. The voting district boundaries and census block boundaries/demographics are also needed to be used in combination with the CVAP estimates. Using GIS tools, the CVAP estimates can be used in mapping applications, such as those reviewed in this section, in combination with voting district boundaries to reveal potential non-compliance in the structure of voting districts.

Use this interactive table in this section to view/rank/compare/query national scope citizen and CVAP estimates by race/ethnicity by census tract. See more about the ACS CVAP data.

Patterns of CVAP Hispanic Population by Neighborhood
The map presented below shows patterns of the Hispanic citizen voting age population as a percent of total population by census tract in the Los Angeles area. Percentage intervals by green color pattern are shown in legend at left of map. Congressional Districts are shown with dark blue boundaries and labeled with congressional district codes. It is easy to see where concentrations of percent Hispanic citizen voting age population are located and how the distribution relates to congressional districts.

Click graphic for larger view; view developed with CV XE GIS.
Map view developed using CVAP2013 GIS Project.

Patterns of CVAP Asian Alone Population by Neighborhood
The map presented below shows patterns of the Asian alone citizen voting age population as a percent of total population by census tract in the Los Angeles area. Percentage intervals are shown by blue color patterns are shown in legend at left of map. Congressional Districts are shown with dark blue boundaries and labeled with congressional district codes. It is easy to see where concentrations of percent Asian alone citizen voting age population are located and how the distribution relates to congressional districts.

Click graphic for larger view; view developed with CV XE GIS.
Map view developed using CVAP2013 GIS Project.

Examining Relationships Among Key Geography and Demographics
An upcoming post will review use of GIS tools examine the relationship between 1) census tracts and the CVAP data, 2) voting districts and 3) census blocks and census block demographics in more detail. That section will review use of downloadable GIS tools and resources that can be used to examine these geographic-demographic relationships in more detail. Voting Rights Act (VRA) stakeholders can better see how to use these data and tools to achieve VRA goals.

About the Author
— Warren Glimpse is former senior Census Bureau statistician responsible for innovative data access and use operations. He is also the former associate director of the U.S. Office of Federal Statistical Policy and Standards for data access and use. He is an expert in developing hard-to-estimate demographic estimates and projections. He has more than 20 years of experience in the private sector developing data resources and tools for integration and analysis of geographic, demographic, economic and business data.

2014 Elections: Data Driven Strategies

.. use of geodemographics will have a big impact on the outcomes of many 2014 elections. Many campaigns are gearing up now for the general elections to be held November 4, 2014. Elections will include all 435 seats in the U.S. House of Representatives, 33 seats in the U.S. Senate, 46 state legislatures among many others. How to more effectively examine characteristics and trends of the voting population?  Where are voters with a higher propensity to vote for your candidate located? Which elections might be most effectively impacted by the use of geodemographics?  Join in this no fee one-hour web session where we examine tools and resources to examine geodemographics relating to state legislative districts and congressional districts.

New York 12th Congressional District & vicinity
… using GIS resources to examine a congressional district by neighborhood
… examining neighborhood patterns of economic prosperity
… NY 12th Congressional District (bold black boundary)

click graphic for larger view with details. View developed using CV XE GIS.

Topics
2014 Elections: Data Driven Strategies
Geography of State Legislative Districts & 113th Congressional Districts
– State Legislative Districts
– Congressional Districts
Examining Characteristics & Patterns
– strategies for accessing & using demographic-economic data
– geographies: census blocks, voting districts, block groupstractscities/places
– interactive analytical tables:  congressional districts;  state legislative districts
– examining 2012 elections & vote by candidate
– mapping patterns of economic prosperity by neighborhood across districts
– using ACS 2010 5 year estimates and Site Analytics tools to examine sub-district demographics
– accessing census block demographics via API
– voting-age population demographics
Redistricting: congressional; state legislative; city, special area; school districts
2014 elections & campaign strategic planning & analysis

Next Session: June 10, 2014
Register here
Related events

Voting Age Population Demographics

Election  campaign strategies and decision-making … in congressional district, state legislative district and wide-ranging other elections, the question arises “what are the characteristics of the voting age population for neighborhoods throughout the district?”  Unless the election is not really contested, an understanding of voting age population demographics is essential to successful campaign planning and decision-making.  The most effective and winning campaign messages require knowledge of voter demographics.  This section reviews availability and use of Citizen Voting Age Population (CVAP) demographics by census tract and congressional district.

See Related Web sections (updated November 2015):
  • Citizen Voting Age Population Demographics – tract & block group
  • Citizen Voting Age Population Demographics – county & state
  • CVAP & Voter Demographics – characteristics of those voting in 2014 elections
  • Voting District Geography & Demographics

Data to Meet Voting Rights Act Needs
The Voting Rights Act prohibits development of voting districts that discriminate against potential voters on the basis of race and/or language/minority status. To examine how voting districts comply with the Voting Rights Act requires data on the Citizen Voting Age Population (CVAP) by race/origin for small geographic areas. The ACS 2011 5-year CVAP special tabulation provides these estimates for census tracts and block groups.

Scope of Subject Matter & Interactive Data Access
The scope of the CVAP subject matter is focused on total number of United States citizens for the geographic area total number of United States citizens 18 years of age or older for the geographic area, each cross-classified by several race/ethnicity groups. The estimates for the number of citizens and voting age population for each of the race/ethnicity groups is provided by census tract in this interactive table (click link to view). A list of the items/columns is presented below the table on that page.

Relating Census Tracts to Congressional Districts and Other Areas
The interactive table shows a row for each census tract in the U.S.  The second and third columns show the corresponding 113th Congressional District.  The graphic shown below illustrates how to associate census tracts with California 113th Congressional District 39.  California is selected.  The table now shows only California census tracts.  Click the CD column header and navigate to CD 39.  The first row in the table below, in CA-39, shows a Census 2010 population of 7,955.  The ACS 2011 5 year estimates include: total population 7,763, total citizens 5,220 and total voting age citizens 2,855.  Similar attributes by race/ethnicity can be viewed in columns further to right (requires scroll).

cvaptable39

Visual Analysis of CVAP Demographic Patterns
Using GIS tools, the CVAP demographics can be used in mapping applications to reveal potential Voting Rights Act non-compliance in the structuring of voting districts.  GIS tools can similarly be used to examine patterns of CVAP demographics of census tracts/neighborhood areas across congressional districts, state legislative districts — or any other political/statistical geography.

Percent Asian CVAP by Census Tract — Los Angeles County Area
The graphic presented below shows patterns of percent Asian CVAP population by census tract in the Los Angeles area.  Asian is used to illustrate, other race/origin groups could be used.
cvap_asian_la
Click the graphic or this link for a larger view and related details.

113th Congressional Districts are shown with brown boundaries and CD number as yellow label.  Green patterns show different percentage intervals of percent Asian citizen voting age population by census tract (see highlighted legend in panel at left of map).  The identify tool (see pointer) used to display mini-profile of data for a selected census tract. Profile for tract 06-037-408703 located in 113th Congressional District 39 shows the estimate of Asian citizen voting age population (3,235) in this tract in context of other citizen and voting age data.

Zoom-in for More Detail — Adding Voting Districts
The next graphic shows a zoom-in to the tract area profiled in the above view. This view has the added layers of Voting Districts 2010 (red bold boundaries) and roads/streets.  Using this view it is possible to examine the relationships between the voting districts and census tracts (green pattern; black boundary).
cvap_asian_la2Click the graphic or this link for a larger view and related details.

Next Steps
In summary, characteristics of the voting age population are not available from Census 2010, but they are available at the census tract and block group levels from the CVAP ACS 2007-2011 special tabulation.  What about updates?  2012 CVAP estimates can be developed for Public Use Microdata Areas (PUMAs) by using the 2012 ACS Public Use Microdata Sample (PUMS).  PUMAs are generally groups of contiguous census tracts and must be 100,000 or more total population.  Since congressional districts are around 650,000 population, CVAP estimates could be developed that typically subdivide congressional districts by six or more PUMAs.  Los Angeles County, for example, contains 69 PUMAs.  2012 CVAP estimates could be developed for each of these PUMAs.

About the Author
— Warren Glimpse is former senior Census Bureau statistician responsible for innovative data access and use operations. He is also the former associate director of the U.S. Office of Federal Statistical Policy and Standards for data access and use. He has more than 20 years of experience in the private sector developing data resources and tools for integration and analysis of geographic, demographic, economic and business data. Contact Warren. Join Warren on LinkedIn.