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 Housing and Urban Development - Office of Policy Development and Research

Publication_Date: August, 2004

Title:

Boundary Files for Census Summary Levels 080, 090, and 091

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Washington, DC

Publisher: U.S. Department of Housing and Urban Development

Description:

Abstract:

The U.S. Census Bureau disseminates data at a variety of summary levels, but does not provide boundary files for all of them. Three of those summary levels (080, 090, and 091) are of particular interest to community planners and social scientists. The geographic component of summary level 080 is census tract split by political boundaries, while summary levels 090 and 091 are comprised of block groups split by political boundaries. 

The U.S. Census provides a file called USGEO, which contains all the possible census geographical areas that each block is a part of. When joined with the national block layer, this file allows you to build any census geography from the block up. The summary level 080, 090, and 091 shapefiles provided on this site were created by joining the USGEO file to the national layer of blocks and then dissolving on the blocks using the appropriate summary level column provided in the USGEO file.

Purpose:

The boundary files available here are intended to supplement boundary files available from the U.S. Census Bureau.  The files available from this site are for community planners interested in working with census tract and block group data that splits by jurisdiction boundaries (summary levels 080, 090, and 091).  These shape files are most helpful when linked with census tract and block group data downloaded from the census standard tabulation data, CDBG low/mod area data (summary level 090), or the CHAS 2000 data (summary levels 080 and 091).

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: August, 2004

Currentness_Reference:

publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -187.652154

East_Bounding_Coordinate: -65.168503

North_Bounding_Coordinate: 71.441059

South_Bounding_Coordinate: 17.831509

Keywords:

Theme:

Theme_Keyword_Thesaurus: ArcIMS Metadata Server Theme Keywords

Theme_Keyword: boundaries

Theme_Keyword: Summary Level 080

Theme_Keyword: Summary Level 090

Theme_Keyword: Summary Level 091

Theme_Keyword: CDBG lowmod

Access_Constraints: None

Use_Constraints:

Currently, summary level 080, 090, and 091 shapefiles for Puerto Rico and other U.S. island territories are not available for download from the Boundary Files Download Site. If you need to obtain these files, please notify the contact person for these data sets (see Point of Contact section below).

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jon Sperling

Contact_Organization: U.S. Department of Housing and Urban Development, Office of Policy Development and Research

Contact_Address:

Address_Type: mailing and physical address

Address:

451 7th Street SW

City: Washington

State_or_Province: DC

Postal_Code: 20410

Country: USA

Contact_Voice_Telephone: (202)708-0614 ext. 5640

Contact_Electronic_Mail_Address: Jon_Sperling@hud.gov

Data_Set_Credit:

These data sets were created for the Department of Housing and Urban Development by the Urban Institute, with assistance from Dennison Associates, Inc. and KBM Group, Inc.

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.3.0.800

Cross_Reference:

Citation_Information:

Originator: U.S. Department of Housing and Urban Development - Office of Policy Development and Research

Publication_Date: May 1, 2004

Title:

CHAS 2000 DATA

Online_Linkage: https://www.huduser.gov/datasets/cp.html

Cross_Reference:

Citation_Information:

Originator: U.S. Census Bureau - Geography Division

Publication_Date: July 18, 2001

Title:

Cartographic Boundary Files

Online_Linkage: http://www.census.gov/geo/www/cob/index.html

Cross_Reference:

Citation_Information:

Originator: U.S. Census Bureau

Publication_Date: January 25, 2002

Title:

Census 2000 Standard Tabulation Data

Online_Linkage: http://www.census.gov/main/www/cen2000.html

Cross_Reference:

Citation_Information:

Originator: U.S. Department of Housing and Urban Development - Office of Community Planning and Development

Publication_Date: April 30, 2004

Title:

Census 2000 Low and Moderate Income Summary Data

Online_Linkage: https://www.hudexchange.info/programs/acs-low-mod-summary-data/

Data_Quality_Information:

Lineage:

Process_Step:

Process_Description:

Metadata imported.

Source_Used_Citation_Abbreviation:

E:\Metadata\CENSUS\AFF_C00_SUM090.xml

Spatial_Data_Organization_Information:

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: 394457

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000001

Longitude_Resolution: 0.000001

Geographic_Coordinate_Units: Decimal degrees

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: CENSUS.AFF_C00_SUM090

Attribute:

Attribute_Label: LOGRECNO

Attribute_Definition:

A unique logical record number (LOGRECNO in the geographic header) is assigned to all files for a specific geographic entity. This is done so all records for that specific entity can be linked together across files. The LOGRECO is provided only in the Summary Level 090 shapefiles. It is the unique identifier that can be used to join the CDBG lowmod dataset to those shapefiles.

Attribute_Definition_Source:

U.S. Census Bureau

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: SUM090

Attribute_Definition:

Unique key identifying split block group. Comprised of state + county + county subdivision + place + tract + urban/rural + block group codes.

Attribute_Definition_Source:

U.S. Census Bureau

Attribute:

Attribute_Label: STATE

Attribute_Definition:

State FIPS code

Attribute_Definition_Source:

U.S. Census Bureau

Attribute:

Attribute_Label: STUSAB

Attribute_Definition:

USPS state abbreviation

Attribute_Definition_Source:

U.S. Census Bureau

Attribute:

Attribute_Label: COUNTY

Attribute_Definition:

County FIPS code

Attribute_Definition_Source:

U.S. Census Bureau

Attribute:

Attribute_Label: CNTY_NAME

Attribute_Definition:

County name

Attribute_Definition_Source:

U.S. Census Bureau

Attribute:

Attribute_Label: COSUB

Attribute_Definition:

County subdivision code. Comprised of state + county + county subdivision codes.

Attribute_Definition_Source:

U.S. Census Bureau

Attribute:

Attribute_Label: COSUB_NAME

Attribute_Definition:

Name of county subdivision.

Attribute_Definition_Source:

U.S. Census Bureau

Attribute:

Attribute_Label: COSUBPL

Attribute_Definition:

County subdivision - place code. Comprised of state + county + county subdivision + place codes.

Attribute_Definition_Source:

U.S. Census Bureau

Attribute:

Attribute_Label: COSUBPLNAM

Attribute_Definition:

Place name.

Attribute_Definition_Source:

U.S. Census Bureau

Attribute_Domain_Values:

Unrepresentable_Domain:

Coordinates defining the features.

Attribute:

Attribute_Label: SHAPE

Attribute_Definition:

Area of shape in decimal degrees.

Attribute_Definition_Source:

ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Coordinates defining the features.

Attribute:

Attribute_Label: SHAPE.AREA

Attribute_Definition:

Length of shape in decimal degrees.

Attribute_Definition_Source:

ESRI

Attribute:

Attribute_Label: SHAPE.LEN

Distribution_Information:

Resource_Description: Downloadable Data

Metadata_Reference_Information:

Metadata_Date: 20040804

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: KBM Group, Inc.

Contact_Person: Robert Renner

Contact_Position: Contractor

Contact_Address:

Address_Type: physical address

Address:

451 7th Street SW

City: Washington

State_or_Province: DC

Postal_Code: 20410

Country: USA

Contact_Voice_Telephone: (202) 708-0614 ext. 5745

Contact_Electronic_Mail_Address: Robert_N._Renner@hug.gov

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