Census Tracts

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: 20110429

Title: Census Tracts

Edition: 2010

Geospatial_Data_Presentation_Form: vector digital data

Online_Linkage: \\10.34.70.24\data\Data_Load.gdb

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. Face refers to the areal (polygon) topological primitives that make up MTDB. A face is bounded by one or more edges; its boundary includes only the edges that separate it from other faces, not any interior edges contained within the area of the face. The Topological Faces Shapefile contains the attributes of each topological primitive face. Each face has a unique topological face identifier (TFID) value. Each face in the shapefile includes the key geographic area codes for almost all geographic areas for which the Census Bureau tabulates data for both the 2010 Census and Census 2000. The geometries of each of these geographic areas can then be built by dissolving the face geometries on the appropriate key geographic area codes in the Topological Faces Shapefile.

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:

Single_Date/Time:

Calendar_Date: 2010

Currentness_Reference: ground condition

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: -77.119862

East_Bounding_Coordinate: -76.909262

North_Bounding_Coordinate: 38.995809

South_Bounding_Coordinate: 38.791590

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: Table

Theme_Keyword: Topological Faces

Theme_Keyword: State FIPS Code

Theme_Keyword: County FIPS Code

Theme_Keyword: Census Tract Number

Theme_Keyword: Block Group

Theme_Keyword: Number

Theme_Keyword: Tabulation Block Number

Theme_Keyword: County Subdivision FIPS Code

Theme_Keyword: Sub-minor Civil Division FIPS Code in Puerto Rico

Theme_Keyword: FIPS 55 Place Code For All Places

Theme_Keyword: Consolidated City FIPS Code

Theme_Keyword: Urban Area Code

Theme_Keyword: 106th congressional district Code

Theme_Keyword: 108th congressional district Code

Theme_Keyword: 5 digit ZIP Code Tabulation Area Code

Theme_Keyword: 3 digit ZIP Code Tabulation Area Code

Theme_Keyword: Traffic Analysis Zone Code

Theme_Keyword: Voting District Code

Theme_Keyword: State Legislative District Upper Chamber Code

Theme_Keyword: State Legislative District Lower Chamber Code

Theme_Keyword: Legislative Session Year

Theme_Keyword: Urban Growth Area Code

Theme_Keyword: American Indian/Alaska Native/Native Hawaiian Areas Census Code

Theme_Keyword: Rreservation or Off-reservation Trust Land Indicator

Theme_Keyword: Alaska Native Regional Corporation FIPS code

Theme_Keyword: Tribal Subdivision Code

Theme_Keyword:

Metropolitan Statistical Area/Consolidated Metropolitan Statistical Area FIPS Code

Theme_Keyword: Primary Metropolitan Statistical Area FIPS Code

Theme_Keyword: New England County Metropolitan Area FIPS Code

Theme_Keyword: Elementary School District Local Education Agency Code

Theme_Keyword: Secondary School District Local Education Agency Code

Theme_Keyword: Unified School District Local Education Agency Code

Theme_Keyword: 1-Percent Public Use Microdata Area Code

Theme_Keyword: 5-Percent Public Use Microdata Area Code

Theme_Keyword: Land/water Flag

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: District of Columbia

Place_Keyword: 11001

Access_Constraints: None

Use_Constraints:

For data terms and conditions, go to <http://dc.gov/page/terms-and-conditions-use-district-data>

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: [email protected]

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.4000

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_Contact:

Contact_Information:

Contact_Address:

Address: 200 I Street SE, 5th Floor

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

\\opfile2\dcgis\GisData\Pending\A-Anna\Census2010\Census2010.mdb

Process_Date: 20110106

Process_Time: 10314900

Process_Contact:

Contact_Information:

Contact_Address:

Address: 200 I Street SE, 5th Floor

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation: \\opfile2\dcgis\GisData\Census2010\Census2010.mdb

Process_Date: 20110110

Process_Time: 09141600

Process_Contact:

Contact_Information:

Contact_Address:

Address: 200 I Street SE, 5th Floor

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation: \\opfile2\dcgis\GisData\Census2010\Census2010.mdb

Process_Date: 20110128

Process_Time: 13081000

Process_Contact:

Contact_Information:

Contact_Address:

Address: 200 I Street SE, 5th Floor

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\DOCUME~1\DWAARD~1\LOCALS~1\Temp\xml55.tmp

Process_Date: 20110427

Process_Time: 11551800

Process_Contact:

Contact_Information:

Contact_Address:

Address: 200 I Street SE, 5th Floor

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Server=dcgiscentral.in.dc.gov; Service=5151; User=dcgis_user; Version=SDE.DEFAULT

Process_Date: 20111110

Process_Time: 12240700

Process_Contact:

Contact_Information:

Contact_Address:

Address: 200 I Street SE, 5th Floor

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\temp\TractPly.xml

Process_Date: 20120514

Process_Time: 18154700

Process_Contact:

Contact_Information:

Contact_Address:

Address: 200 I Street SE, 5th Floor

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\DOCUME~1\fieldm\LOCALS~1\Temp\xml980F.tmp

Process_Date: 20120515

Process_Time: 14013500

Process_Contact:

Contact_Information:

Contact_Address:

Address: 200 I Street SE, 5th Floor

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: G-polygon

Point_and_Vector_Object_Count: 179

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: State Plane Coordinate System

State_Plane_Coordinate_System:

SPCS_Zone_Identifier: 1900

Lambert_Conformal_Conic:

Standard_Parallel: 38.300000

Standard_Parallel: 39.450000

Longitude_of_Central_Meridian: -77.000000

Latitude_of_Projection_Origin: 37.666667

False_Easting: 400000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000063

Ordinate_Resolution: 0.000063

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

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: TractPly

Entity_Type_Definition:

Topological Faces (Polygons With all Geocodes) County-based shapefile

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: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: TRACT

Attribute:

Attribute_Label: GEOID

Attribute:

Attribute_Label: P0010001

Attribute:

Attribute_Label: P0010002

Attribute:

Attribute_Label: P0010003

Attribute:

Attribute_Label: P0010004

Attribute:

Attribute_Label: P0010005

Attribute:

Attribute_Label: P0010006

Attribute:

Attribute_Label: P0010007

Attribute:

Attribute_Label: P0010008

Attribute:

Attribute_Label: OP000001

Attribute_Definition:

Aggregation of multiple race tabulations that include "Black or African American"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP000002

Attribute_Definition:

Aggregation of multiple race tabulations that include "American Indian and Alaska Native"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP000003

Attribute_Definition: Aggregation of multiple race tabulations that include "Asian"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP000004

Attribute_Definition:

Aggregation of multiple race tabulations that include "Native Hawaiian and Other Pacific Islander"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: P0020002

Attribute:

Attribute_Label: P0020005

Attribute:

Attribute_Label: P0020006

Attribute:

Attribute_Label: P0020007

Attribute:

Attribute_Label: P0020008

Attribute:

Attribute_Label: P0020009

Attribute:

Attribute_Label: P0020010

Attribute:

Attribute_Label: OP00005

Attribute_Definition:

Aggregation of non-hispanic multiple race tabulations that include "Black or African American"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP00006

Attribute_Definition:

Aggregation of non-hispanic multiple race tabulations that include "American Indian and Alaska Native"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP00007

Attribute_Definition:

Aggregation of non-hispanic multiple race tabulations that include "Asian"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP00008

Attribute_Definition:

Aggregation of non-hispanic multiple race tabulations that include "Native Hawaiian and Other Pacific Islander"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: P0030001

Attribute:

Attribute_Label: P0030003

Attribute:

Attribute_Label: P0030004

Attribute:

Attribute_Label: P0030005

Attribute:

Attribute_Label: P0030006

Attribute:

Attribute_Label: P0030007

Attribute:

Attribute_Label: P0030008

Attribute:

Attribute_Label: OP00009

Attribute_Definition:

Aggregation of age 18 and over multiple race tabulations that include "Black or African American"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP00010

Attribute_Definition:

Aggregation of age 18 and over multiple race tabulations that include "American Indian and Alaska Native"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP00011

Attribute_Definition:

Aggregation of age 18 and over multiple race tabulations that include "Asian"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP00012

Attribute_Definition:

Aggregation of age 18 and over multiple race tabulations that include "Native Hawaiian and Other Pacific Islander"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: P0040002

Attribute:

Attribute_Label: P0040005

Attribute:

Attribute_Label: P0040006

Attribute:

Attribute_Label: P0040007

Attribute:

Attribute_Label: P0040008

Attribute:

Attribute_Label: P0040009

Attribute:

Attribute_Label: P0040010

Attribute:

Attribute_Label: OP000013

Attribute_Definition:

Aggregation of non-hispanic age 18 and over multiple race tabulations that include "Black or African American"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP000014

Attribute_Definition:

Aggregation of non-hispanic age 18 and over multiple race tabulations that include "American Indian and Alaska Native"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP000015

Attribute_Definition:

Aggregation of non-hispanic age 18 and over multiple race tabulations that include "Asian"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: OP000016

Attribute_Definition:

Aggregation of non-hispanic age 18 and over multiple race tabulations that include "Native Hawaiian and Other Pacific Islander"

Attribute_Definition_Source: Office of Planning

Attribute:

Attribute_Label: H0010001

Attribute:

Attribute_Label: H0010002

Attribute:

Attribute_Label: H0010003

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.

Attribute:

Attribute_Label: ACRES

Attribute:

Attribute_Label: SQ_MILES

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: 200 I Street SE, 5th Floor

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: [email protected]

Resource_Description: Downloadable Data

Distribution_Liability:

For data terms and conditions, go to <http://dc.gov/page/terms-and-conditions-use-district-data>

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: TGRSHP (compressed)

File_Decompression_Technique: PK-ZIP, version 1.93 A or higher

Transfer_Size: 4.502

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: All data is available at <http://opendata.dc.gov>

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: 20120514

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch

Contact_Person: REQUIRED: The person responsible for the metadata information.

Contact_Address:

Address_Type: Mailing address

Address: 200 I Street SE, 5th Floor

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: [email protected]

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile