2010 Census Block Groups, 2010 TIGER/Line Shapefile

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• 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: 2010 Census Block Groups, 2010 TIGER/Line Shapefile

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: 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: 579552.666809

East_Bounding_Coordinate: 2551106.850295

North_Bounding_Coordinate: 81835.082450

South_Bounding_Coordinate: 1355592.778933

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories

Theme_Keyword: Boundaries

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: State 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: State or Equivalent Entity

Place_Keyword: Washington

Place_Keyword: WA

Place_Keyword: 53

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

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

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:

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geodetic_Model:

Horizontal_Datum_Name:

North American Datum of 1983 in the 48 contiguous states, the District of Columbia, Alaska, Hawaii (only Oahu Island within Honolulu County, HI (15003)), Puerto Rico, and the U.S. Virgin Islands. Regional datums are used in the Pacific Island Areas (American Samoa, Guam, and the Commonwealth of the Northern Mariana Islands) and most of Hawaii. The datums used in the remainder of Hawaii are as follows: Hawaii County, HI (15001), Old Hawaiian Datum; Honolulu County, HI (15003), local astronomic datums for all islands northwest of 161 degrees west longitude; Kalawao County, HI (15005), Old Hawaiian Datum; Kauai County, HI (15007), Old Hawaiian Datum for Kauai Island and local astronomic datum for Kaula Rock; Maui County, HI (15009), Old Hawaiian Datum. The datums used in American Samoa are as follows: Eastern District, AS (60010), American Samoa Datum of 1962; Manu'a District, AS (60020), American Samoa Datum of 1962; Rose Island, AS (60030), local astronomic datum; Swains Island, AS (60040), local astronomic datum 1939; Western District, AS (60050), American Samoa Datum of 1962. The Guam Datum of 1963 is used in Guam (66010). The datums used in the Commonwealth of the Northern Mariana Islands are as follows: Northern Islands Municipality (69085), Guam Datum of 1963 (Agrihan, Alamagan, Anatahan, Gugan, Medinilla, Pagan, and Sarigan Islands) and local astronomic datums (Asuncion, Maug, and Farallon De Pajaros Islands); Rota Municipality (69100), Guam Datum of 1963; Saipan Municipality (69110), Guam Datum of 1963; Tinian Municipality (69120), Guam Datum of 1963.

Ellipsoid_Name:

Geodetic Reference System 80 where the datum is the North American Datum of 1983.

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 298257

Planar:

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Planar_Distance_Units: survey feet

Coordinate_Representation:

Abscissa_Resolution: 0.000000

Ordinate_Resolution: 0.000000

Map_Projection:

Map_Projection_Name: Lambert Conformal Conic

Lambert_Conformal_Conic:

Standard_Parallel: 45.833333

Standard_Parallel: 47.333333

Longitude_of_Central_Meridian: -120.500000

Latitude_of_Projection_Origin: 45.333333

False_Easting: 1640416.666667

False_Northing: 0.000000

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: BG10.shp

Entity_Type_Definition: 2010 Census Block Group

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: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

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 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: 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 BLKGRPCE00 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: 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: ALANDM

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: AWATERM

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: ALANDMI

Attribute_Definition: 2010 Census land area (square miles)

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: AWATERMI

Attribute_Definition: 2010 Census water area (square miles)

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: POP10

Attribute_Definition: 2010 Census population

Attribute:

Attribute_Label: HHP10

Attribute_Definition: 2010 Census household population

Attribute:

Attribute_Label: GQ10

Attribute_Definition: 2010 Census group quarter population

Attribute:

Attribute_Label: HU10

Attribute_Definition: 2010 Census housing units

Attribute:

Attribute_Label: OHU10

Attribute_Definition: 2010 Census occupied housing units

Attribute:

Attribute_Label: POPWHITE

Attribute_Definition:

2010 Census population, White alone (includes Hispanic or Latino)

Attribute:

Attribute_Label: POPBLACK

Attribute_Definition:

2010 Census population, Black or African American alone (includes Hispanic or Latino)

Attribute:

Attribute_Label: POPAIAN

Attribute_Definition:

2010 Census population, American Indian and Alaska Native alone (includes Hispanic or Latino)

Attribute:

Attribute_Label: POPASIAN

Attribute_Definition:

Census 2010 Census population, Asian alone (includes Hispanic or Latino)

Attribute:

Attribute_Label: POPNHOPI

Attribute_Definition:

2010 Census population, Native Hawaiian and Other Pacific Islander alone (includes Hispanic or Latino)

Attribute:

Attribute_Label: POPOTH

Attribute_Definition:

2010 Census population, Some Other Race alone (includes Hispanic or Latino)

Attribute:

Attribute_Label: POPTWO

Attribute_Definition:

2010 Census population, Population of Two or More Races (includes Hispanic or Latino)

Attribute:

Attribute_Label: POPHISP

Attribute_Definition: 2010 Census population, Hispanic or Latino (of any race)

Attribute:

Attribute_Label: POPWHITE2

Attribute_Definition: 2010 Census population, White Alone (not Hispanic or Latino)

Attribute:

Attribute_Label: POPBLACK2

Attribute_Definition:

2010 Census population, Black or African American alone (not Hispanic or Latino)

Attribute:

Attribute_Label: POPAIAN2

Attribute_Definition:

2010 Census population, American Indian and Alaska Native alone (not Hispanic or Latino)

Attribute:

Attribute_Label: POPASIAN2

Attribute_Definition: 2010 Census population, Asian alone (not Hispanic or Latino)

Attribute:

Attribute_Label: POPNHOPI2

Attribute_Definition:

2010 Census population, Native Hawaiian and Other Pacific Islander alone (not Hispanic or Latino)

Attribute:

Attribute_Label: POPOTH2

Attribute_Definition:

2010 Census population, Some Other Race alone (not Hispanic or Latino)

Attribute:

Attribute_Label: POPTWO2

Attribute_Definition:

2010 Census population, Two or More Races (not Hispanic or Latino)

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

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.

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