U.S. Census Block Centroid Populations

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: ESRI
Publication_Date: 20040301
Title: U.S. Census Block Centroid Populations
Edition: 2004
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: ESRI® Data & Maps
Issue_Identification: 2004
Publication_Information:
Publication_Place: Redlands, California, USA
Publisher: ESRI
Other_Citation_Details: Location: \usa\census
Description:
Abstract:
U.S. Census Block Centroid Populations represents the population of the U.S. Census block centroids for United States. U.S. Census blocks are the smallest geographic entities within a county for which the Census Bureau tabulates population.
Purpose:
U.S. Census Block Centroid Populations provides population and other demographic information for each U.S. Census block centroid within United States.
Supplemental_Information: Largest scale when displaying the data: 1:100,000.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 2000
Single_Date/Time:
Calendar_Date: 2000
Single_Date/Time:
Calendar_Date: 2003
Currentness_Reference: publication date: 2003; ground condition: 2000, 2000
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Matches software update releases
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -179.110291
East_Bounding_Coordinate: 179.619164
North_Bounding_Coordinate: 71.358155
South_Bounding_Coordinate: 18.906027
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: point
Theme_Keyword: census block centroids
Theme_Keyword: census blocks
Theme_Keyword: population
Theme_Keyword: households
Theme_Keyword: housing units
Theme_Keyword: society
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: United States
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2000
Temporal_Keyword: 2003
Temporal_Keyword: 2000
Access_Constraints: Access granted to Licensee only.
Use_Constraints:
The data are provided by multiple, third party data vendors under license to ESRI for inclusion on ESRI Data & Maps for use with ESRI® software. Each data vendor has its own data licensing policies and may grant varying redistribution rights to end users. Please consult the redistribution rights below for this data set provided on ESRI Data & Maps. As used herein, “Geodata” shall mean any digital data set consisting of geographic data coordinates and associated attributes.
The redistribution rights for this data set: Public domain data from U.S. government is freely redistributable with proper metadata and source attribution.
[Applicable to ESRI Business Information Solutions source only]–Redistribution rights are granted by the data vendor for hard-copy renditions or static, electronic map images (e.g. .gif, .jpeg, etc.) that are plotted, printed, or publicly displayed with proper metadata and source/copyright attribution to the respective data vendor(s). Geodata is redistributable with a Value-Added Software Application developed by ESRI Business Partners on a royalty-free basis with proper metadata and source/copyright attribution to the respective data vendor(s). Geodata is redistributable without a Value-Added Software Application (i.e., adding the sample data to an existing, [non]commercial data set for redistribution) with proper metadata and source/copyright attribution to the respective data vendor(s).
The terms and conditions below apply to all the data sets provided on ESRI Data & Maps.
Proprietary Rights and Copyright: Licensee acknowledges that the Data and Related Materials contain proprietary and confidential property of ESRI and its licensor(s). The Data and Related Materials are owned by ESRI and its licensor(s) and are protected by United States copyright laws and applicable international copyright treaties and/or conventions.
Limited Warranty and Disclaimer: ESRI warrants that the media upon which the Data and Related Materials are provided will be free from defects in materials and workmanship under normal use and service for a period of ninety (90) days from the date of receipt.
THE DATA AND RELATED MATERIALS ARE EXCLUDED FROM THE LIMITED WARRANTY, AND THE LICENSEE EXPRESSLY ACKNOWLEDGES THAT THE DATA CONTAINS SOME NONCONFORMITIES, DEFECTS, OR ERRORS. ESRI DOES NOT WARRANT THAT THE DATA WILL MEET LICENSEE'S NEEDS OR EXPECTATIONS; THAT THE USE OF THE DATA WILL BE UNINTERRUPTED; OR THAT ALL NONCONFORMITIES, DEFECTS, OR ERRORS CAN OR WILL BE CORRECTED. ESRI IS NOT INVITING RELIANCE ON THIS DATA, AND THE LICENSEE SHOULD ALWAYS VERIFY ACTUAL DATA.
EXCEPT FOR THE LIMITED WARRANTY SET FORTH ABOVE, THE DATA AND RELATED MATERIALS CONTAINED THEREIN ARE PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedy and Limitation of Liability: The entire liability of ESRI or its licensor(s) and Licensee's exclusive remedy shall be to terminate the Agreement upon Licensee returning the Data and Related Materials to ESRI with a copy of Licensee's invoice/receipt and ESRI returning the license fees paid to Licensee.
IN NO EVENT SHALL ESRI AND/OR ITS LICENSOR(S) BE LIABLE FOR COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOST PROFITS, LOST SALES, OR BUSINESS EXPENDITURES, INVESTMENTS, OR COMMITMENTS IN CONNECTION WITH ANY BUSINESS; LOSS OF ANY GOODWILL; OR FOR ANY INDIRECT, SPECIAL, INCIDENTAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT OR USE OF THE DATA AND RELATED MATERIALS, HOWEVER CAUSED, ON ANY THEORY OF LIABILITY, AND WHETHER OR NOT ESRI OR ITS LICENSOR(S) HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THESE LIMITATIONS SHALL APPLY NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF ANY EXCLUSIVE REMEDY.
Third Party Beneficiary: ESRI's licensor(s) has (have) authorized ESRI to (sub)distribute and (sub)license its (their) data as incorporated into the Data and Related Materials. As an intended third party beneficiary to this Agreement, the ESRI licensor(s) is (are) entitled to directly enforce, in its own name, the rights and obligations undertaken by the Licensee and to seek all legal and equitable remedies as are afforded to ESRI.
In the event that the data vendor(s) has (have) granted the end user permission to redistribute the Geodata, please use proper proprietary or copyright attribution for the various data vendor(s), and provide the associated metadata file(s) with the Geodata. In compliance with FGDC metadata standards, ESRI has attempted to practice proper metadata methodologies by providing any data source information, descriptions, and file names to assist in this effort.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ESRI
Contact_Person: Data Team
Contact_Address:
Address_Type: mailing and physical address
Address: 380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909-793-2853
Contact_Facsimile_Telephone: 909-793-5953
Contact_Electronic_Mail_Address: info@esri.com
Hours_of_Service: 8:00 a.m.–5:30 p.m. Pacific time, Monday–Friday
Contact_Instructions:
In the United States– Please direct all inquiries regarding software/data pricing and consulting services to your local ESRI Regional Office. For support, you may contact Technical Support by telephone (voice) between 6:00 a.m. and 6:00 p.m. Pacific time, Monday through Friday, by dialing 909-793-3774; facsimile (fax) available at 909-792-0960; electronic mail (e-mail) support@esri.com; or visit <http://support.esri.com>; ESRI holidays excluded.
Outside the United States– Please direct all inquiries regarding software/data pricing, sales, support, and consulting services to your local ESRI International Distributor. This information can be found at <http://gis.esri.com/intldist/contactint.cfm>.
For other questions or comments, you may contact ESRI headquarters by e-mail, telephone, or fax or write to us.
Data_Set_Credit: United States Postal Service
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 9.0.0.535

Data_Quality_Information:
Logical_Consistency_Report:
No duplicate features are present. The shapefile is converted to SDC (Smart Data Compression) format in ArcSDE®. This verifies and validates the geometry.
Completeness_Report:
After processing, the data set is checked for drawing display and number of records and file sizes compared with source materials.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The geospatial part of this data set was calculated from latitude/longitude coordinates from the Public Law 94-171 population files. The horizontal positional accuracy is unknown.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Department of Commerce, Census Bureau
Publication_Date: 2000
Title: 2000 Census of Population and Housing Public Law 94-171
Edition: 2000
Series_Information:
Series_Name: Census of Population and Housing Public Law 94-171
Issue_Identification: 2000
Publication_Information:
Publication_Place: USA
Publisher: Department of Commerce, Census Bureau
Other_Citation_Details:
The geospatial data is calculated from the latitude/longitude coordinate attributes.
Type_of_Source_Media: CD–ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Census 94-171
Source_Contribution: Attribute and geospatial data
Source_Information:
Source_Citation:
Citation_Information:
Originator: Department of Commerce, Census Bureau
Publication_Date: 2001
Title: Summary File 1 (SF1)
Edition: 2000
Series_Information:
Series_Name: Summary File 1 (SF1)
Issue_Identification: 2000
Publication_Information:
Publication_Place: USA
Publisher: Department of Commerce, Census Bureau
Other_Citation_Details:
The Summary File 1 (SF1) data is based on the 2000 Census of Population.
Type_of_Source_Media: CD–ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Census SF1
Source_Contribution: Attribute data
Source_Information:
Source_Citation:
Citation_Information:
Originator: ESRI Business Information Solutions
Publication_Date: 2003
Geospatial_Data_Presentation_Form: tabular digital data
Publication_Information:
Publication_Place: Vienna, Virginia, USA
Publisher: ESRI Business Information Solutions
Other_Citation_Details: Provided updates for the new U.S. counties.
Type_of_Source_Media: CD–ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2003
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: ESRI BIS
Source_Contribution: Attribute and geospatial data
Process_Step:
Process_Description:
The following steps were performed by ESRI: Extracted the PL-94 data set from 2000 Census block centroids defined by the Census Bureau from the Public Law 94-171 population files. Created a nationwide file and combined state, county, tract, and block FIPS codes. Extracted the SF1 data set from the Census Bureau and created a nationwide file of the combined FIPS codes with POP2000, HOUSEHOLDS and HSE_UNITS attributes. Joined the files, formatted the attributes, created the Event Theme from the files, and output the shapefile. Converted Hawaii to North American Datum of 1983 (NAD83). Created ArcGIS® layer file (.lyr), projection file (.prj), and spatial indices. Converted the data set to SDC.
Source_Used_Citation_Abbreviation: Census 94-171
Source_Used_Citation_Abbreviation: Census SF1
Process_Date: 20021113
Process_Step:
Process_Description:
The following steps were performed by ESRI: Assembled the new counties separately by 1) merging together new block points from ESRI Business Information Solutions for counties (FIPS: 51005) Alleghany, VA, (FIPS: 08014) Broomfield, CO, (FIPS: 08001) Adams, CO, (FIPS: 08013) Boulder, CO, (FIPS: 08059) Jefferson, CO, and (FIPS: 08123) Weld, CO; 2) extracting records from 2003 U.S. Census Block Centroid Populations for counties (FIPS: 51005) Alleghany, VA and (FIPS: 51560) Clifton Forge, VA, then changing the county ID for the 51560 features to be 51005; 3) joining new ESRI Business Information Solutions attributes and the old 51005 attributes. Deleted points for counties (08001, 08013, 08059, 08123, 51005, and 51560) from U.S. Census Block Centroid Populations. Added the new counties block points into U.S. Census Block Centroid Populations. Converted the data set to SDC. Created the projection file (.prj) and spatial indices.
Source_Used_Citation_Abbreviation: Census 94-171
Source_Used_Citation_Abbreviation: Census SF1
Source_Used_Citation_Abbreviation: ESRI BIS
Process_Date: 20040317

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 8205639

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000009
Longitude_Resolution: 0.000009
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

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: blockpop
Entity_Type_Definition:
The points represent the centroids for the smallest entity for which the Census Bureau collects and tabulates decennial census information within United States; bounded on all sides by visible features such as streets, streams, and railroad tracks, and by invisible boundaries such as city, town, and county limits.
Entity_Type_Definition_Source: Department of Commerce, 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: STATE_FIPS
Attribute_Definition:
The FIPS code (two-digit number) for the state in which the block is located.
Attribute_Definition_Source:
Department of Commerce, National Institute of Standards and Technology
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Federal Information Processing Standards
Codeset_Source: National Institute of Standards and Technology
Attribute:
Attribute_Label: CNTY_FIPS
Attribute_Definition:
The FIPS code (three-digit number) for the county in which the block is located.
Attribute_Definition_Source:
Department of Commerce, National Institute of Standards and Technology
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Federal Information Processing Standards
Codeset_Source: National Institute of Standards and Technology
Attribute:
Attribute_Label: STCOFIPS
Attribute_Definition:
The combined state and county FIPS code. County FIPS codes begin with 001 for each state, use the combined code (five-digit number) to uniquely identify a county.
Attribute_Definition_Source:
Department of Commerce, National Institute of Standards and Technology
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Federal Information Processing Standards
Codeset_Source: National Institute of Standards and Technology
Attribute:
Attribute_Label: TRACT
Attribute_Definition:
The four-digit number, with a two-digit suffix, used to identify a census tract. Census tract numbers are always unique within a county and usually unique within an metropolitan area.
Attribute_Definition_Source: Department of Commerce, Census Bureau
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Federal Information Processing Standards
Codeset_Source: National Institute of Standards and Technology
Attribute:
Attribute_Label: BLOCK
Attribute_Definition: The Census code (four-digit number) for the block.
Attribute_Definition_Source: Department of Commerce, Census Bureau
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Federal Information Processing Standards
Codeset_Source: National Institute of Standards and Technology
Attribute:
Attribute_Label: FIPS
Attribute_Definition:
The combined state and county FIPS codes, and tract and block Census codes.
Attribute_Definition_Source: Department of Commerce, Census Bureau
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Federal Information Processing Standards
Codeset_Source: National Institute of Standards and Technology
Attribute:
Attribute_Label: POP2000
Attribute_Definition: The 2000 population of the block.
Attribute_Definition_Source: Department of Commerce, Census Bureau
Attribute_Domain_Values:
Unrepresentable_Domain: Populations for the features.
Attribute:
Attribute_Label: HOUSEHOLDS
Attribute_Definition: The total number of households in the block.
Attribute_Definition_Source: Department of Commerce, Census Bureau
Attribute_Domain_Values:
Unrepresentable_Domain: Numbers for the features.
Attribute:
Attribute_Label: HSE_UNITS
Attribute_Definition: The total number of housing units in the block.
Attribute_Definition_Source: Department of Commerce, Census Bureau
Attribute_Domain_Values:
Unrepresentable_Domain: Numbers for the features.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ESRI; ESRI International Distributors
Contact_Address:
Address_Type: mailing and physical address
Address: 380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 800-447-9778
Contact_Instructions:
In the United States, contact the ESRI Telesales staff at 800-447-9778 for more information about our software and data.
Outside the United States, please direct all inquiries to your local ESRI International Distributor. This information can be found at <http://gis.esri.com/intldist/contactint.cfm>.
Resource_Description: Offline Data
Distribution_Liability: See use constraints.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SDC
Format_Specification:
The SDC file contains the geospatial and attribute data. The SDI file contains the spatial and attribute indexes. The PRJ file contains the coordinate system information (optional). The XML file (*.sdc.xml) contains the metadata describing the data set (optional).
File_Decompression_Technique: ArcGIS® software
Transfer_Size: 125.297
Digital_Transfer_Option:
Offline_Option:
Offline_Media: DVD–ROM
Recording_Capacity:
Recording_Density: 4.38
Recording_Density_Units: GB (gigabytes)
Recording_Format: ISO 9660
Offline_Option:
Offline_Media: CD–ROM
Recording_Capacity:
Recording_Density: 650
Recording_Density_Units: MB (megabytes)
Recording_Format: ISO 9660
Fees: Software purchase price
Ordering_Instructions: ESRI Data & Maps is available only as part of ESRI® software.
Technical_Prerequisites: To use this data requires software that supports SDC files.

Metadata_Reference_Information:
Metadata_Date: 20040325
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ESRI
Contact_Person: Data Team
Contact_Address:
Address_Type: mailing and physical address
Address: 380 New York Street
City: Redlands
State_or_Province: California
Postal_Code: 92373-8100
Country: USA
Contact_Voice_Telephone: 909-793-2853
Contact_Facsimile_Telephone: 909-793-5953
Contact_Electronic_Mail_Address: info@esri.com
Hours_of_Service: 8:00 a.m.–5:30 p.m. Pacific time, Monday–Friday
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

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