blkgrp10

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
U.S. Department of Commerce, U.S. Census Bureau, Geography Division
Publication_Date: 20100101
Title: blkgrp10
Edition: 2010
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: <http://www.census.gov/geo/www/tiger>
Description:
Abstract:
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. Block Groups (BGs) are defined before tabulation block delineation and numbering, but are clusters of blocks within the same census tract that have the same first digit of their 4-digit census block number from the same decennial census. For example, Census 2000 tabulation blocks 3001, 3002, 3003,.., 3999 within Census 2000 tract 1210.02 are also within BG 3 within that census tract. Census 2000 BGs generally contained between 600 and 3,000 people, with an optimum size of 1,500 people. Most BGs were delineated by local participants in the Census Bureau's Participant Statistical Areas Program (PSAP). The Census Bureau delineated BGs only where the PSAP participant declined to delineate BGs or where the Census Bureau could not identify any local PSAP participant. A BG usually covers a contiguous area. Each census tract contains at least one BG, and BGs are uniquely numbered within census tract. Within the standard census geographic hierarchy, BGs never cross county or census tract boundaries, but may cross the boundaries of other geographic entities like county subdivisions, places, urban areas, voting districts, congressional districts, and American Indian / Alaska Native / Native Hawaiian areas. BGs have a valid code range of 0 through 9. BGs coded 0 were intended to only include water area, no land area, and they are generally in territorial seas, coastal water, and Great Lakes water areas. For Census 2000, rather than extending a census tract boundary into the Great Lakes or out to the U.S. nautical three-mile limit, the Census Bureau delineated some census tract boundaries along the shoreline or just offshore. The Census Bureau assigned a default census tract number of 0 and BG of 0 to these offshore, water-only areas not included in regularly numbered census tract areas.
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.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100101
Ending_Date: 20100701
Currentness_Reference: Publication Date
Status:
Progress: Complete
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -160.250629
East_Bounding_Coordinate: -154.732131
North_Bounding_Coordinate: 22.233216
South_Bounding_Coordinate: 18.893355
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: boundaries
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Polygon
Theme_Keyword: State or equivalent entity
Theme_Keyword: BG
Theme_Keyword: Block Group
Place:
Place_Keyword_Thesaurus:
INCITS.38-200x (R2004),INCITS.31-200x (R2007),INCITS.454-200x,INCITS 455-200x,INCITS 446-2008
Place_Keyword: Hawaii
Place_Keyword: United States
Place_Keyword: State or Equivalent Entity
Place_Keyword: 15
Place_Keyword: U.S.
Place_Keyword: HI
Access_Constraints: None
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.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch
Contact_Address:
Address_Type: mailing
Address: 4600 Silver Hill Road, Stop 7400
City: Washington
State_or_Province: DC
Postal_Code: 20233-7400
Country: US
Contact_Voice_Telephone: 301-763-1128
Contact_Facsimile_Telephone: 301-763-4710
Contact_Electronic_Mail_Address: geo.tiger@census.gov
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.1.7333
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Accurate against Federal Information Processing Standards (FIPS), FIPS Publication 6-4, and FIPS-55 at the 100% level for the codes and base names. The remaining attribute information has been examined but has not been fully tested for accuracy.
Logical_Consistency_Report:
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.
Completeness_Report:
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.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
U.S. Department of Commerce, U.S. Census Bureau, Geography Division
Publication_Date: unpublished material
Title: Census MAF/TIGER database
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100101
Ending_Date: 20100701
Source_Currentness_Reference: Publication Date
Source_Citation_Abbreviation: MAF/TIGER
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.
Process_Step:
Process_Description:
TIGER/Line Shapefiles are extracted from the Census MAF/TIGER database by nation, state, county, and entity. Census MAF/TIGER data for all of the aforementioned geographic entities are then distributed among the shapefiles each containing attributes for line, polygon, or landmark geographic data.
Source_Used_Citation_Abbreviation: Census MAF/TIGER
Process_Date: 20100101
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference:
Federal Information Processing Standards (FIPS), ANSI, and feature names.
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 848
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 HARN UTM Zone 4N
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -159.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0001
Ordinate_Resolution: 0.0001
Planar_Distance_Units: meter
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983 HARN
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: blkgrp10
Entity_Type_Definition: 2010 Census Block Group State-based
Entity_Type_Definition_Source: U.S. Census Bureau
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: GEOID10
Attribute_Definition:
Census block group identifier; a concatenation of 2010 Census state Federal Information Processing Standards (FIPS) code, county FIPS code, census tract code, and block group number
Attribute_Definition_Source: U.S. Census Bureau
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name:
INCITS.38-200x (R2004), Codes for the Identification of the States, the District of Columbia, Puerto Rico, and the Insular Areas of the United States (Formerly FIPS 5-2), INCITS.31-200x (R2007), Codes for the Identification of the Counties and Equivalent Areas of the United States, Puerto Rico, and the Insular Areas of the United States (Formerly FIPS 6-4) and the tract code that appears in TRACTCE10 and the census block group number that appears in BLKGRPCE10
Codeset_Source: U.S. Census Bureau
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: POP10
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch
Contact_Address:
Address_Type: mailing
Address: 4600 Silver Hill Road, Stop 7400
City: Washington
State_or_Province: DC
Postal_Code: 20233-7400
Country: US
Contact_Voice_Telephone: 301-763-1128
Contact_Facsimile_Telephone: 301-763-4710
Contact_Electronic_Mail_Address: geo.tiger@census.gov
Distribution_Liability:
No warranty, expressed or implied is made with regard to the accuracy of these data, and no liability is assumed by the U.S. Government in general or the U.S. Census Bureau in specific as to the spatial or attribute accuracy of the data. The act of distribution shall not constitute any such warranty and no responsibility is assumed by the U.S. government in the use of these files. The boundary information in the TIGER/Line Shapefiles is for statistical data collection and tabulation purposes only; their depiction and designation for statistical purposes do not constitute a determination of jurisdictional authority or rights of ownership or entitlement and they are not legal land descriptions.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TGRSHP (compressed)
File_Decompression_Technique: PK-ZIP, version 1.93 A or higher
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.census.gov/geo/www/tiger>
Offline_Option:
Recording_Format: ISO 9660
Fees:
The online copy of the TIGER/Line files may be accessed without charge.
Ordering_Instructions:
To obtain more information about ordering TIGER/Line shapefiles visit <http://www.census.gov/geo/www/tiger>
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.
Metadata_Reference_Information:
Metadata_Date: 20171222
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch
Contact_Address:
Address_Type: mailing
Address: 4600 Silver Hill Road, Stop 7400
City: Washington
State_or_Province: DC
Postal_Code: 20233-7400
Country: US
Contact_Voice_Telephone: 301-763-1128
Contact_Facsimile_Telephone: 301-763-4710
Contact_Electronic_Mail_Address: geo.tiger@census.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Generated by mp version 2.9.12 on Fri Dec 22 14:06:09 2017