Census Block Groups for Philadelphia 2010


Identification_Information:
Citation:
Citation_Information:
Originator:U.S. Department of Commerce, U.S. Census Bureau, Geography Division
Publication_Date:2010
Title:
Census Block Groups for Philadelphia 2010
Edition:2010
Geospatial_Data_Presentation_Form:vector digital data
Online_Linkage: http://www.census.gov/geo/www/tiger
Online_Linkage: http://www.pasda.psu.edu/
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. Some boundary details clarified by Philadelphia City Planning Commission May 2011
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. Adjusted to City's Standard Boundary Format.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:201001
Ending_Date:201007
Currentness_Reference:
publication date
Status:
Progress:Complete
Maintenance_and_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.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:-75.280266
East_Bounding_Coordinate:-74.955763
North_Bounding_Coordinate:40.137992
South_Bounding_Coordinate:39.867004
Keywords:
Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:boundaries
Theme:
Theme_Keyword_Thesaurus:None
Theme_Keyword:County or equivalent entity
Theme_Keyword:Polygon
Theme_Keyword:Block Group
Theme_Keyword:BG
Place:
Place_Keyword_Thesaurus:INCITS.38-200x (R2004),INCITS.31-200x (R2007),INCITS.454-200x,INCITS 455-200x,INCITS 446-2008
Place_Keyword:United States
Place_Keyword:U.S.
Place_Keyword:County or Equivalent Entity
Place_Keyword:Philadelphia
Place_Keyword:42101
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
Address:
4600 Silver Hill Road, Stop 7400
City:Washington
State_or_Province:DC
Postal_Code:20233-7400
Country:United States
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 XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3500
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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:201001
Ending_Date:201007
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:2010
Process_Step:
Process_Description:
Dataset moved.
Source_Used_Citation_Abbreviation:
R:\latest\shapes\Census_shapes\Phi_2010TIGER\BlockGroups2010NEW
Process_Date:20110902
Process_Time:15005100
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Spatial_Data_Organization_Information:
Indirect_Spatial_Reference_Method:
Federal Information Processing Standards (FIPS), ANSI, and feature names.
Direct_Spatial_Reference_Method:Vector
Point_and_Vector_Object_Information:
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method:coordinate pair
Coordinate_Representation:
Abscissa_Resolution:0.000328
Ordinate_Resolution:0.000328
Planar_Distance_Units:survey feet
Geodetic_Model:
Horizontal_Datum_Name:North American Datum of 1983 in the 48 contiguous states, the District of Columbia, Alaska, Hawaii, Puerto Rico, the Virgin Islands of the United States, and the Pacific Island Areas.
Ellipsoid_Name:Geodetic Reference System 80
Semi-major_Axis:6378137
Denominator_of_Flattening_Ratio:298257
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution:1.000000
Altitude_Encoding_Method:Explicit elevation coordinate included with horizontal coordinates
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label:BG10.shp
Entity_Type_Definition:
2010 Census Block Group County-based
Entity_Type_Definition_Source:
U.S. Census Bureau
Attribute:
Attribute_Label:FID
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: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:STATEFP10
Attribute_Definition:
2010 Census state Federal Information Processing Standards
                 (FIPS) codes
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)
Codeset_Source:U.S. Census Bureau
Attribute:
Attribute_Label:COUNTYFP10
Attribute_Definition:
2010 Census county Federal Information Processing Standards
                 (FIPS) code
Attribute_Definition_Source:
U.S. Census Bureau
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: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)
Codeset_Source:U.S. Census Bureau
Attribute:
Attribute_Label:TRACTCE10
Attribute_Definition:
2010 Census census tract code
Attribute_Definition_Source:
U.S. Census Bureau
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:000000
Enumerated_Domain_Value_Definition:
Water tract in some coastal and Great Lakes water and
                    territorial sea
Enumerated_Domain_Value_Definition_Source:
U.S. Census
Enumerated_Domain:
Enumerated_Domain_Value:000100 to 998999
Enumerated_Domain_Value_Definition:
Census tract number
Enumerated_Domain_Value_Definition_Source:
U.S. Census Bureau
Attribute:
Attribute_Label:BLKGRPCE10
Attribute_Definition:
2010 Census block group number
Attribute_Definition_Source:
U.S. Census Bureau
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:0
Enumerated_Domain_Value_Definition:
Water block group
Enumerated_Domain_Value_Definition_Source:
U.S. Census Bureau
Enumerated_Domain:
Enumerated_Domain_Value:1 to 9
Enumerated_Domain_Value_Definition:
Census 2000 block group code
Enumerated_Domain_Value_Definition_Source:
U.S. Census Bureau
Attribute:
Attribute_Label:GEOID10
Attribute_Definition:
Census block group identifier; a concatenation of 2010 Census
                 state 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 census tract code found in TRACTCE10 and block group number found in BLKGRPCE10
Codeset_Source:U.S. Census Bureau
Attribute:
Attribute_Label:NAMELSAD10
Attribute_Definition:
2010 Census translated legal/statistical area description and
                 the block group number
Attribute_Definition_Source:
U.S. Census Bureau
Attribute_Domain_Values:
Unrepresentable_Domain:
Refer to the block group number that appears in BLKGRPCE10 and translated legal/statistical area description code BG, Block Group
Attribute:
Attribute_Label:MTFCC10
Attribute_Definition:
MAF/TIGER feature class code
Attribute_Definition_Source:
U.S. Census Bureau
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:G5030
Enumerated_Domain_Value_Definition:
Block Group
Enumerated_Domain_Value_Definition_Source:
U.S. Census Bureau
Attribute:
Attribute_Label:FUNCSTAT10
Attribute_Definition:
2010 Census functional status
Attribute_Definition_Source:
U.S. Census Bureau
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:S
Enumerated_Domain_Value_Definition:
Statistical entity
Enumerated_Domain_Value_Definition_Source:
U.S. Census Bureau
Attribute:
Attribute_Label:ALAND10
Attribute_Definition:
2010 Census land area (square meters)
Attribute_Definition_Source:
U.S. Census Bureau
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:0 to 9,999,999,999,999
Enumerated_Domain_Value_Definition:
Blank
Enumerated_Domain_Value_Definition_Source:
U.S. Census Bureau
Attribute:
Attribute_Label:AWATER10
Attribute_Definition:
2010 Census water area (square meters)
Attribute_Definition_Source:
U.S. Census Bureau
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:0 to 9,999,999,999,999
Enumerated_Domain_Value_Definition:
Blank
Enumerated_Domain_Value_Definition_Source:
U.S. Census Bureau
Attribute:
Attribute_Label:INTPTLAT10
Attribute_Definition:
2010 Census latitude of the internal point
Attribute_Definition_Source:
U.S. Census Bureau
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:00
Enumerated_Domain_Value_Definition:
Blank
Enumerated_Domain_Value_Definition_Source:
U.S. Census Bureau
Attribute:
Attribute_Label:INTPTLON10
Attribute_Definition:
2010 Census longitude of the internal point
Attribute_Definition_Source:
U.S. Census Bureau
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:00
Enumerated_Domain_Value_Definition:
Blank
Enumerated_Domain_Value_Definition_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: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.
Attribute:
Attribute_Label:SHAPE_LEN
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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
Address:
4600 Silver Hill Road, Stop 7400
City:Washington
State_or_Province:DC
Postal_Code:20233-7400
Country:United States
Contact_Voice_Telephone:301-763-1128
Contact_Facsimile_Telephone:301-763-4710
Contact_Electronic_Mail_Address:geo.tiger@census.gov
Resource_Description:Downloadable Data
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:
Offline_Media:DVD-ROM (Only if offered offline)
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.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Address:
Address_Type:mailing address
Address:
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 8792
Contact_Electronic_Mail_Address:pasda@psu.edu
Distribution_Liability:
The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.
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Metadata_Reference_Information:
Metadata_Date:20100507
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
Address:
4600 Silver Hill Road, Stop 7400
City:Washington
State_or_Province:DC
Postal_Code:20233-7400
Country:United States
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 Standards for Digital Geospatial Metadata
Metadata_Standard_Version:FGDC-STD-001-1998
Metadata_Time_Convention:local time
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