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S1

$median household income
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113th Congressional Districts

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US Asian Indian population 2010

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geocoded students and school
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Power of Combining Maps with Data

Support & Technical Assistance
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TIGER/Line: Digital Map Database

The Census Bureau TIGER 2016 geographic data were released in August 2016. TIGER 2016 data are now being used to update selected features of the Digital Map Database (TIGER/DMD). TIGER/DMD includes a wide range of augmented features and content -- with 100% crosswalk to original TIGER/Line.

2016 Shapefiles and Datasets Related to TIGER
Shapefiles and datasets derived from or related to TIGER 2016 include many types of geography and data. The data are developed in the form of shapefiles and dbase files that may be used directly with the ProximityOne CV XE GIS software at no fee. Perform wide-ranging mapping and geospatial analysis applications using these GIS resources. See more about mapping statistical data.
  • TIGER/LIne 2016 Main
  • 2016 Census Blocks Shapefiles with integrated demographics
  • 2016 Roads Shapefiles
  • Other TIGER 2016 Data

TIGER/Line Vintages and Derived Files
The TIGER/Line files are updated annually, usually in August. There are important reasons to use the latest vintage TIGER/Line files.
  • for political areas, boundaries reflect the most recent officially defined areas.
    .. generally boundaries are defined as of January of the TIGER vintage year.
  • roads shapefiles often have updated and improved coverage and attributes
      relative to previous vintages.
  • as roads geometry is corrected/updated, census block geometry/boundaries
      are corrected/updated.
  • all higher level geography based on blocks are likewise updated
      (all tabulation geographies).

Note that the number of Census 2010 blocks does not change as new TIGER/Line vintage files become available.
  • there are no updated Census 2010 demographics for Census 2010 tabulation blocks
      as conveyed in TIGER 2016.

Earlier vintage TIGER/Line files, or derived files, might better match application needs.
  • TIGER/Line 2010/Census 2010 matches tabulation geography geocodes for Census 2010 block geocodes.
    .. consider that many county and tract codes exist in TIGER 2016 as compared to TIGER 2010.
  • TIGER/Line vintages are designed to match American Community Survey (ACS) annual releases.
    .. the 2014 U.S. Gazetteer Files (from TIGER 2014) match the ACS 2014 tabulation areas.
    .. the 2015 U.S. Gazetteer Files (from TIGER 2015) match the ACS 2015 tabulation areas.
  • TIGER/Line 2016 shapefiles extend to territorial limit.
    .. this results in displayed boundaries on maps extending into the ocean or lake water areas.
    .. smoothed/generalized shapefiles derived from TIGER/Line files are truncated at shoreline.
    .. smoothed shapefiles availability from the Census Bureau might lag 6 months from the TIGER/Line release date.
    .. shoreline truncated shapefiles are available from ProximityOne now.

View TIGER/Line Shapefile Geography with Google Maps API
  • Fort Bend County, TX by census tract & Sugar Land
  • Warren County, IA by census tract & Indianola
  • Warren County, MO by census tract & Warrenton
  • Washington, DC by census tract
  • Washington, DC by ZIP Code
  • Kansas City, MO-KS Area by ZIP Code
  • Houston, TX area school districts

CV XE GeoGateway
Use the CV XE GeoGateway to access TIGER/DMD shapefiles. Automatically build GIS projects using the GeoGateway in a few minutes.

Shp2XML -- Extracting TIGER Shapefile Geometry
  • tool to convert shapefile geometry to XML/XLS
  • create polyline files; display shapefile geometry on Google/Bing maps
  • see http://proximityone.com/shp2xml.htm
      

TIGER Shapefiles
The Census Bureau TIGER shapefiles contain data that can be used to represent different types of point, line, and polygon geography covering the U.S. earth surface. More about TIGER. The TIGER shapefiles, and related derivative products, play an important role in wide-ranging geospatial analyses and decision-making information solutions. Warren Glimpse, founder of ProximityOne, developed the Columbia, MO GBF/DIME file used as the prototype for the TIGER/Line program and is developer of CV XE GIS desktop and Web-based GIS applications/tools that facilitate use of the TIGER/Line data with other wide-ranging data in applications such as pattern/trend analysis, geospatial processing and location-based operations. Glimpse worked with hundreds of government agencies on the Census 2010 LUCA program to improve the coverage and content of the TIGER/Line files.

TIGER/Digital Map Database Editor
Use the CV XE GIS TIGER/DMD Editor to improve TIGER files to meet a broader set of geocoding, routing and geospatial application needs. Resolve issues such as missing or poorly structured line segments, improperly named line segments, line segments with missing names and address ranges, among others.

The TIGER/DMD Editor is used to develop/maintain the Digital Map Database (DMD). DMD data are structured in a manner compatible with TIGER and maintain a near 100-percent crosswalk between DMD segments and TIGER segments. TIGER-related augmentations include:
  • adding and updating road segments with right- and left-side geocoding to the census block level
  • adding/updating address ranges for road segments where missing/incomplete in original files.
  • adding alternative road names.
  • reclassifying roads (e.g. some counties have too many/too few roads classified as primary/secondary).
  • coding right- and left-side road segments with ZIP+4 Codes.

Role and Scope of TIGER/Line Shapefiles
TIGER/Line shapefiles are created from the Census Bureau's TIGER (Topologically Integrated Geographic Encoding and Referencing) database of selected geographic and cartographic information. TIGER is used by the Census Bureau to support the mapping and related geographic activities required by the decennial and economic censuses and statistical survey programs. TIGER/Line shapefiles are available for public use and are typically used to provide the digital map base for GIS (Geographic Information System) and mapping applications.

TIGER/Line files are digital, vector-based point, line and polygon shapefiles and related files. TIGER/Line shapefiles do not contain any demographic or other subject matter data though wide-ranging subject matter data can be knit-together with the shapefiles. Reference and thematic maps may be created using TIGER/Line shapefiles using GIS or mapping software like CV XE GIS. The TIGER/Line shapefiles include:
  • boundary shapefiles for all Census 2010/2000 political and statistical tabulation areas.
  • post-2010 annual releases; updates for political areas and selected geography.
  • water and landmark area polygon shapefiles.
  • road, rail, water and related line/segment-oriented shapefiles.
  • point and specific location shapefiles (schools, shopping centers, neighborhoods, etc.)
  • related reference files that facilitate geospatial processing.
  • Census 2010 & later TIGER/Line files reflect:
    - overall improvements and updates resulting from the Census 2010 LUCA program.
    - extensive qualititative and coverage improvement for roads/streets.

Importance of TIGER/Line Shapefiles
Visual analysis made possible by maps is essential to effective decision-making. Development of underlying data often depends on the ability to relate data organized by one type of geography to data organized for another type of geography. The Census Bureau TIGER/Line shapefiles play an indispensable role in meeting these needs. They provide the underlying vector-oriented geographic data used in most U.S. mapping and GIS applications.

ProximityOne User Group
Join the ProximityOne User Group to keep up-to-date with new developments relating to metros and component geography decision-making information resources. Receive updates and access to tools and resources available only to members. Use this form to join the User Group.

Support Using these Resources
Learn more about accessing and using demographic-economic data and related analytical tools. Join us in a Data Analytics Lab session. There is no fee for these one-hour Web sessions. Each informal session is focused on a specific topic. The open structure also provides for Q&A and discussion of application issues of interest to participants.

Additional Information
ProximityOne develops geographic-demographic-economic data and analytical tools and helps organizations knit together and use diverse data in a decision-making and analytical framework. We develop custom demographic/economic estimates and projections, develop geographic and geocoded address files, and assist with impact and geospatial analyses. Wide-ranging organizations use our tools (software, data, methodologies) to analyze their own data integrated with other data. Follow ProximityOne on Twitter at www.twitter.com/proximityone. Contact ProximityOne (888-364-7656) with questions about data covered in this section or to discuss custom estimates, projections or analyses for your areas of interest.


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