The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic
information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing
(MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however,
each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation.
States and equivalent entities are the primary governmental divisions of the United States. In addition to the fifty States,
the Census Bureau treats the District of Columbia, Puerto Rico, and each of the Island Areas (American Samoa, the Commonwealth
of the Northern Mariana Islands, Guam, and the U.S. Virgin Islands) as the statistical equivalents of States for the purpose
of data presentation.<br /><br /> This table contains data on household income and poverty status from the American Community
Survey 2006-2010 database for states. The American Community Survey (ACS) is a household survey conducted by the U.S. Census
Bureau that currently has an annual sample size of about 3.5 million addresses. ACS estimates provides communities with the
current information they need to plan investments and services. Information from the survey generates estimates that help
determine how more than $400 billion in federal and state funds are distributed annually. Each year the survey produces data
that cover the periods of 1-year, 3-year, and 5-year estimates for geographic areas in the United States and Puerto Rico,
ranging from neighborhoods to Congressional districts to the entire nation. This table also has a companion table (Same table
name with MOE Suffix) with the margin of error (MOE) values for each estimated element. MOE is expressed as a measure value
for each estimated element. So a value of 25 and an MOE of 5 means 25 +/- 5 (or statistical certainty between 20 and 30).
There are also special cases of MOE. An MOE of -1 means the associated estimates do not have a measured error. An MOE of 0
means that error calculation is not appropriate for the associated value. An MOE of 109 is set whenever an estimate value
is 0. The MOEs of aggregated elements and percentages must be calculated. This process means using standard error calculations
as described in "American Community Survey Multiyear Accuracy of the Data (3-year 2008-2010 and 5-year 2006-2010)". Also,
following Census guidelines, aggregated MOEs do not use more than 1 0-element MOE (109) to prevent over estimation of the
error. Due to the complexity of the calculations, some percentage MOEs cannot be calculated (these are set to null in the
summary-level MOE tables).<br /><br /> The name for table 'ACS10INCSTMOE' was added as a prefix to all field names imported
from that table. Be sure to turn off 'Show Field Aliases' to see complete field names in the Attribute Table of this feature
layer. This can be done in the 'Table Options' drop-down menu in the Attribute Table or with key sequence '[CTRL]+[SHIFT]+N'.
Due to database restrictions, the prefix may have been abbreviated if the field name exceded the maximum allowed characters.
Citation
Title R2 & NE: State Level 2006-2010 ACS Income Summary
publication Date
2012-05-17
Edition 2010
presentationForm
mapDigital
cited responsible party
-
publisher
organisation Name
U.S. EPA Office of Environmental Information (OEI) - Office of Information Analysis and Access (OIAA)
Contact information
Address
, Washington, DC
cited responsible party
-
originator
organisation Name
U.S. Department of Commerce, U.S. Census Bureau, Geography Division
Title INCITS.38-200x (R2004),INCITS.31-200x (R2007),INCITS.454-200x,INCITS 455-200x,INCITS 446-2008
purpose:
In order for others to use the information in the Census MAF/TIGER database in a geographic information system (GIS) or for
other geographic applications, the Census Bureau releases to the public extracts of the database in the form of TIGER/Line
Shapefiles.
Resource language:
eng; USA
Resource progress code:
completed
Resource Maintenance Information
maintenance or update frequency:
TIGER/LINE SHAPEFILES ARE EXTRACTED FROM THE CENSUS MAF/TIGER DATABASE. NO CHANGES OR UPDATES WILL BE MADE TO THIS VERSION
OF THE TIGER/LINE SHAPEFILES. FUTURE RELEASES OF TIGER/LINE SHAPEFILES WILL REFLECT UPDATES MADE TO THE CENSUS MAF/TIGER DATABASE.
Constraints on resource usage:
Constraints
Use limitation statement:
https://edg.epa.gov/EPA_Data_License.htm
Constraints on resource usage:
Legal Constraints
use constraint:
otherRestrictions
Other constraints
Use Constraints: The TIGER/Line Shapefile products are not copyrighted however TIGER/Line and Census TIGER are registered
trademarks of the U.S. Census Bureau. These products are free to use in a product or publication, however acknowledgement
must be given to the U.S. Census Bureau as the source. The boundary information in the TIGER/Line Shapefiles are for statistical
data collection and tabulation purposes only; their depiction and designation for statistical purposes does not constitute
a determination of jurisdictional authority or rights of ownership or entitlement and they are not legal land descriptions.Coordinates
in the TIGER/Line shapefiles have six implied decimal places, but the positional accuracy of these coordinates is not as great
as the six decimal places suggest.
Constraints on resource usage:
Legal Constraints
Access Constraints
otherRestrictions
Other constraints
Access Constraints: None
Constraints on resource usage:
Security Constraints
Classification
NO CONFIDENTIALITY (FROM METADATA RECORD)
Classification
System FIPS Pub 199
Handling
Description Standard Technical Controls
Spatial representation type code:
vector
Processing environment:
Native Dataset Environment: Microsoft Windows Vista Version 6.0 (Build 6002) Service Pack 2; ESRI ArcCatalog 9.3.1.4000 Technical
Prerequisites: The TIGER/Line shapefiles contain geographic data only and do not include display mapping software or statistical
data. For information on how to use the TIGER/Line shapefile data with specific software package users shall contact the company
that produced the software.
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude
-179.231086
eastBoundLongitude
179.859681
northBoundLatitude
71.441059
southBoundLatitude
17.831509
Temporal Extent
2010-01-01
2010-07-01
point of contact
-
pointOfContact
individual Name Tony Ierulli
organisation Name
U.S. Environmental Protection Agency, Region 2, GIS Team
source description
Source Contribution: The selected geographic and cartographic information (line segments) are derived from the U.S. Census
Bureau's Master Address File Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) database.Source Type
online
source citation
Title Census MAF/TIGER database
publication Date
cited responsible party
-
originator
organisation Name
U.S. Department of Commerce, U.S. Census Bureau, Geography Division
Resource extent
Temporal Extent
2010-01-01
2010-07-01
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy Report
evaluation Method Description
Data were collected using methods that have unknown accuracy (EPA National Geospatial Data Policy [NGDP] Accuracy Tier 10).
For more information, please see EPA's NGDP at http://epa.gov/geospatial/policies.html
Completeness Commission
evaluation Method Description
Data completeness of the TIGER/Line Shapefiles reflects the contents of the Census MAF/TIGER database at the time the TIGER/Line
Shapefiles were created.
Completeness Omission
evaluation Method Description
Data completeness of the TIGER/Line Shapefiles reflects the contents of the Census MAF/TIGER database at the time the TIGER/Line
Shapefiles were created.
ConceptualConsistency
measure Description
The Census Bureau performed automated tests to ensure logical consistency and limits of shapefiles. Segments making up the
outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. All polygons are tested for closure.
The Census Bureau uses its internally developed geographic update system to enhance and modify spatial and attribute data
in the Census MAF/TIGER database. Standard geographic codes, such as FIPS codes for states, counties, municipalities, county
subdivisions, places, American Indian/Alaska Native/Native Hawaiian areas, and congressional districts are used when encoding
spatial entities. The Census Bureau performed spatial data tests for logical consistency of the codes during the compilation
of the original Census MAF/TIGER database files. Most of the codes for geographic entities except states, counties, urban
areas, Core Based Statistical Areas (CBSAs), American Indian Areas (AIAs), and congressional districts were provided to the
Census Bureau by the USGS, the agency responsible for maintaining FIPS 55. Feature attribute information has been examined
but has not been fully tested for consistency. For the TIGER/Line Shapefiles, the Point and Vector Object Count for the G-polygon
SDTS Point and Vector Object Type reflects the number of records in the shapefile attribute table. For multi-polygon features,
only one attribute record exists for each multi-polygon rather than one attribute record per individual G-polygon component
of the multi-polygon feature. TIGER/Line Shapefile multi-polygons are an exception to the G-polygon object type classification.
Therefore, when multi-polygons exist in a shapefile, the object count will be less than the actual number of G-polygons.
notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version
FGDC-STD-001-1998) using the 2012-06-20T17:21:00 version of the FGDC RSE to ISO 19115-2 transform.
Metadata contact
-
pointOfContact
individual Name Tony Ierulli
organisation Name
U.S. Environmental Protection Agency, Region 2, GIS Team