TIGER/Line Digital Map Database
The Census Bureau TIGER 2019 geographic data were released in August 2019. TIGER 2019 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.
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.
2019 Shapefiles and Datasets Related to TIGER
Shapefiles and datasets derived from or related to TIGER 2019 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 2019 Main
Detailed features of the TIGGER/Line 2019 files are summarized below for TIGER/Line 2017.
TIGER/LIne 2017 Main
2017 Census Blocks Shapefiles with integrated demographics
2017 Roads Shapefiles
Other TIGER 2017 Data
See related TIGER/LIne 2016 Main
TIGER/Line Vintages and Derived Files .. goto top
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
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 2019.
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 2019 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.
.. the 2019 U.S. Gazetteer Files (from TIGER 2019) match the ACS 2018 tabulation areas.
TIGER/Line 2019 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 .. goto top
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
TIGER/Digital Map Database Editor .. goto top
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 .. goto top
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 .. goto top
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.
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