Census Block Groups for Philadelphia 2010

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Distributor 1
• Distribution_Information
• Metadata_Reference_Information

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: https://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

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

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:

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

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

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.

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.

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