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Digital Map Database visual GIS applications
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Visual analysis with ProximityOne tools
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visually analyze clients/markets
site analysis using 1 mile radius

S1

$median household income
patterns by census tract - Houston

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113th Congressional Districts

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US Asian Indian population 2010

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geocoded students and school
McKinney ISD, TX

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geocoded students and school
with tax parcels & streets

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high school attendance zones
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%high school graduates by
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Austin, TX MSA counties &
places 10K+ population markers

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Appalachia counties (green) &
coalfield counties (orange)

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China provinces percent urban &
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Honolulu census tracts (red)
& census blocks


Central Park area NYC

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Kansas City Metro & Counties
Home Depot locations (markers)

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World Cities; focus on Spain

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Accessing & Using TIGER/Line Files

The Census Bureau TIGER/Line 2013 were released in August 2013. See more about TIGER/Line 2013 below in this section.

TIGER 2013 data are now being used to update selected features of the Disgital Map Database (TIGER/DMD). TIGER/DMD includes a wide range of augmented features and content -- with 100% crosswalk to original TIGER/Line.

Web Session
Join us in the Using TIGER/Line Shapefiles & GIS one hour no fee Web session. Learn about the mechanics of making the Housing Price Index (HPI) by metro thematic pattern maps using CV XE GIS with the TIGER/Line metro and related shapefiles. Create variations of the map views and/or entirely different visual analysis GIS projects -- by metro and otherwise.

Examining TIGER/Line 2013 Road Coverage
  • U.S. by county interactive table shows attributes of road coverage.
  • See http://proximityone.com/tiger2013.htm

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

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/Line Vintages & Access/Integration
The 2013 vintage of the Census Bureau TIGER shapefiles, released August 2013, reflect many improvements to the Census 2010 vintage as well as updates to various political and statistical geographic areas. TIGER 2013 includes new/updated boundaries of:
  • 113th Congressional Districts, state legislative districts
  • annual updates to various political and statistical geographic areas
    ... including the 2013 vintage metropolitan area/Core-Based Statistical Areas.

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.

TIGER 2013
The 2013 TIGER/Line Shapefiles contain 2010 Census geography and current geography for the United States, the District of Columbia, Puerto Rico, and the Island areas. Current geography is defined as the latest version of the geographic extent of legally defined geographic areas as reported, generally reflecting the boundaries of governmental units in effect as of January 1, 2013, or legal and statistical area boundaries that have been adjusted and/or corrected since the 2010 Census. This vintage provides the most current boundaries of governmental units that match the data from the surveys that use 2013 geography, such as the 2013 Population Estimates and the American Community Survey. The features reflect updates made in the MAF/TIGER database through May 2013.

More about 2013 TIGER/Line Shapefiles ... scroll section
Geographic Features and Boundaries Available in the 2013 TIGER/Line Shapefiles
The 2013 TIGER/Line Shapefiles contain the geographic extent and boundaries of both legal and statistical entities. A legal entity is a geographic entity whose boundaries, name, origin, and area description result from charters, laws, treaties, or other administrative or governmental action. A statistical entity is any geographic entity or combination of entities identified and defined solely for the tabulation and presentation of data. Statistical entity boundaries are not legally defined and the entities have no governmental standing.
Legal entities included in these shapefiles are:
- American Indian off-reservation trust lands
- American Indian reservations (both federally and state-recognized)
- American Indian tribal subdivisions (within legal American Indian areas)
- Alaska Native Regional Corporations
- 113th Congressional districts
- Consolidated cities
- Counties and equivalent entities (except census areas in Alaska)
- Estates (U.S. Virgin Islands only)
- Hawaiian home lands
- Incorporated places
- Minor civil divisions (MCDs, such as towns and townships in the Northeast and Midwest)
- School districts (elementary, secondary, and unified)
- States and equivalent entities
- State legislative districts (upper and lower chambers)
- Subbarrios (Subminor civil divisions) (Puerto Rico only)

- Statistical entities included in these shapefiles are:
- American Indian/Alaska Native statistical areas
- Alaska Native village statistical areas
- Tribal designated statistical areas
- Oklahoma tribal statistical areas
- State designated tribal statistical areas
- American Indian tribal subdivisions (within Oklahoma tribal statistical areas)
- Block groups
- Census areas (statistical county equivalents in Alaska)
- Census blocks
- Census county divisions (CCDs), census subareas (in Alaska), and unorganized territories (statistical county subdivisions)
- Census designated places (CDPs)
- Census tracts
- Metropolitan and micropolitan statistical areas and related statistical areas
- Metropolitan divisions
- Combined New England city and town areas
- Combined statistical areas
- New England city and town areas
- New England city and town area divisions
- Public use microdata areas (PUMAs)
- Urban areas
- 5-digit ZIP Code tabulation areas (ZCTAs)


TIGER 2013 Boundary Changes
The 2013 TIGER/Line Shapefile boundaries for some legal areas represent those that were collected as part of the Census 2013 Boundary and Annexation Survey (BAS). The boundaries of all federally recognized American Indian Reservations and off-reservation trust lands, tribal subdivisions, states and equivalent entities, all counties and equivalent entities, all minor civil divisions (MCDs), all consolidated cities, and all incorporated places generally are those that were legally in effect as of January 1, 2013. The 2013 TIGER/Line Shapefile boundaries for elementary, secondary, and unified school districts are collected through a survey of state education officials under the auspices of the U.S. Department of Education's National Center for Education Statistics (NCES) and are current as of the 2011-2012 school year.

TIGER 2013 Geography Vintages
The 2013 TIGER/Line Shapefiles contain 2010 Census geography and current geography for the United States, the District of Columbia, Puerto Rico, and the Island areas. Current geography is defined as the latest version of the geographic extent of legally defined geographic areas as reported, generally reflecting the boundaries of governmental units in effect as of January 1, 2013, or legal and statistical area boundaries that have been adjusted and/or corrected since the 2010 Census. This vintage provides the most current boundaries of governmental units that match the data from the surveys that use 2013 geography, such as the 2013 Population Estimates and the American Community Survey. The features reflect updates made in the MAF/TIGER database through May 2013.

TIGER 2013 -- Examining Change in Road Coverage ... scroll section
These views illustrate some differences in road coverage between TIGER 2012 and 2013. Each segment provides for left- and right-side low and high address range coverage. No assessment of improvement is made in this section. The next view shows TIGER 2012 (gray) and TIGER 2013 (red) road coverage for Harris County (Houston), TX. TIGER 2013 road segments number 288,937 and TIGER 2012 road segments number 291,179. The TIGER 2013 roads are overlayed on TIGER 2012 roads in the next view. Red segments, hard to see at this scale, are new relative to coverage by TIGER 2012. The pointer at near the top of county is shown as a zoom-in the next view.


The zoom-in view better reveals differences between TIGER 2012 and 2013. The next view shows further zoom-in.


In the following view, it is evident where some improvements have been made since the 2012 vintage. It is also clear that many 2013 vintage segments need to be added and some in this area need further alignment. Roads shown by OpenStreetMap show areas yet to be built-out with TIGER coverage. Note this is not always the case. There are many instances (other counties) where TIGER is much more accurate and comprehensive than OpenStreetMap.



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.

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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