US CENSUS BLOCK GROUPS - 1990

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Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Department of Commerce, Bureau of the Census
Publication_Date: 19900000
Title: US CENSUS BLOCK GROUPS - 1990
Edition: 20010000
Geospatial_Data_Presentation_Form: SHAPE
Online_Linkage: <http://www.census.gov/geo/www/gis_gateway.html>
Description:
Abstract:
This dataset contains census block groups as they are defined by the Bureau of the Census. Census block groups are geographic entities within the same census tract. Block groups usually contain between 250 and 550 housing units. Each block group covers a contiguous area. Each census tract contains at least one block group.
Purpose:
This dataset contains census block groups as they are defined by the Bureau of the Census. Census block groups are geographic entities within the same census tract. Block groups usually contain between 250 and 550 housing units. Each block group covers a contiguous area. Each census tract contains at least one block group.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19900000
Ending_Date: 19900000
Currentness_Reference: 1990 Census data
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -87.429040
East_Bounding_Coordinate: -79.872251
North_Bounding_Coordinate: 30.983191
South_Bounding_Coordinate: 24.492815
Keywords:
Theme:
Theme_Keyword_Thesaurus: NONE
Theme_Keyword: Bureau of the Census
Theme_Keyword: census block groups
Theme_Keyword: census tract
Theme_Keyword: housing
Theme_Keyword: taxes
Theme_Keyword: planning
Theme_Keyword: USCB
Theme_Keyword: tiger
Place:
Place_Keyword_Thesaurus: NONE
Place_Keyword: Florida
Place_Keyword: Southeast United States
Place_Keyword: Southeast U.S.
Temporal:
Temporal_Keyword_Thesaurus: NONE
Temporal_Keyword: 1990s
Access_Constraints: NONE
Use_Constraints:
THE DATA INCLUDED IN THIS APPLICATION ARE BASED ON INTERPRETATION OF AVAILABLE INFORMATION AND SHOULD NOT BE CONSTRUED AS LEGALLY BINDING.

Scale is an important factor in data usage. Certain scale data sets are not suitable for some projects, analysis, or modeling purposes. Please be sure you are using the best available data.

1:24000 scale data sets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries.

1:100000 scale data sets are recommended for projects that are at the multi-county or regional level. 1:250000 scale data sets are recommended for projects that are at the regional or state level or larger.

Native_Data_Set_Environment:
Data was downloaded from the website: <http://www.census.gov/ftp/pub/geo/www/tiger>
Cross_Reference:
Citation_Information:
Originator: UNITED STATES CENSUS BUREAU, USCB
Publication_Date: 19900000
Title: BLKGRP-100
Geospatial_Data_Presentation_Form: Map
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Relied on the integrity of the attribute information within the original data layer.
Logical_Consistency_Report:
Certain node/geometry and topology (GT)-polygon/chain relationships are collected or generated to satisfy topological requirements. Some of these requirements include: chains must begin and end at nodes, chains must connect to each other at nodes, chains do not extend through nodes, left and right GT-polygons are defined for each chain element and are consistent throughout the transfer, and the chains representing the limits of the file (neatline) are free of gaps. The neatline is generated by connecting the four corners of the digital file, as established during initialization of the digital file. All data outside the enclosed region are ignored and all data crossing these geographically straight lines are clipped at the neatline. (Exception: During the QA/QC process all data is examined and if errors are found and corrections are possible, then data is corrected accordingly. This process is documented in the Process_Step.) Data within a specified tolerance of the neatline are snapped to the neatline. Neatline straightening aligns the digitized edges of the digital data with the generated neatline, that is, with the longitude/latitude lines in geographic coordinates. All internal polygons are tested for closure. Certain attributes and/or entities, e.g. closure line, convey data quality information. When information to be encoded in the subfield is known to be not applicable (undefined, not relevant), then the subfield is valued by a string of "9s"; and when the information to be encoded is relevant but unknown (or missing), then the subfield is valued by a string of "9s."
Completeness_Report:
Certain node/geometry and topology (GT)-polygon/chain relationships are collected or generated to satisfy topological requirements. Some of these requirements include: chains must begin and end at nodes, chains must connect to each other at nodes, chains do not extend through nodes, left and right GT-polygons are defined for each chain element and are consistent throughout the transfer, and the chains representing the limits of the file (neatline) are free of gaps. The neatline is generated by connecting the four corners of the digital file, as established during initialization of the digital file. All data outside the enclosed region are ignored and all data crossing these geographically straight lines are clipped at the neatline. (Exception: During the QA/QC process all data is examined and if errors are found and corrections are possible, then data is corrected accordingly. This process is documented in the Process_Step.) Data within a specified tolerance of the neatline are snapped to the neatline. Neatline straightening aligns the digitized edges of the digital data with the generated neatline, that is, with the longitude/latitude lines in geographic coordinates. All internal polygons are tested for closure. Certain attributes and/or entities, e.g. closure line, convey data quality information. When information to be encoded in the subfield is known to be not applicable (undefined, not relevant), then the subfield is valued by a string of "9s"; and when the information to be encoded is relevant but unknown (or missing), then the subfield is valued by a string of "9s."
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: UNITED STATES CENSUS BUREAU
Publication_Date: 19900000
Title: BLKGRP-100
Geospatial_Data_Presentation_Form: Map
Source_Scale_Denominator: 100000
Type_of_Source_Media: Map
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19900000
Ending_Date: 19900000
Source_Currentness_Reference: Census Condition
Source_Citation_Abbreviation: USCB
Source_Contribution: Vector data representing the Census Block group data.
Process_Step:
Process_Description:
The process step describes, in general, the process used in the production of data sets. The originating agencies created the original spatial coverage. GeoPlan, during the QA/QC process included the following aspects: (1) Reprojected data to FGDL Albers (2) Set Precision to DOUBLE (3) Set Tolerances to FGDL Standards. (4) DESCRIPT item added and contains the total population numbers. (5) Numerous sliver polygons dissolved, due to inconsistencies between the Tiger Line County boundaries and the FGDL/DEP County Boundaries
Process_Date: 2000
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 24.000000
Standard_Parallel: 31.500000
Longitude_of_Central_Meridian: -84.000000
Latitude_of_Projection_Origin: 24.000000
False_Easting: 400000.00000
False_Northing: 0.00000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate Pair
Coordinate_Representation:
Abscissa_Resolution: 0.002048
Ordinate_Resolution: 0.002048
Planar_Distance_Units: METERS
Geodetic_Model:
Horizontal_Datum_Name: D_North_American_1983_HARN
Ellipsoid_Name: GRS1980
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: BLKGRP.BDF
Entity_Type_Definition: Database File
Entity_Type_Definition_Source: None
Attribute:
Attribute_Label: BKG_KEY
Attribute_Definition:
Code consisting of 12 characters. The first two characters are the state FIPS code. The third through 5th characters are the county FIPS code. The sixth through eleventh characters are the census tract identification code. The last character is the blockgroup within the census tract
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: BLKGRP
Attribute_Definition: Tract and Block Group number.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: FIPS
Attribute_Definition: County identification code.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: TRACT
Attribute_Definition:
Census tract number - all Block Groups are part of a larger Census Tract.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: BLOCKGRP
Attribute_Definition: Block group number
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: POP1990
Attribute_Definition: The total 1990 population for a tract
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: POP90_SQMI
Attribute_Definition: The 1990 population per square mile for a state.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: HOUSEHOLDS
Attribute_Definition: Total number of households.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: MALES
Attribute_Definition: Number of males
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: FEMALES
Attribute_Definition: Number of females
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: WHITE
Attribute_Definition: Number of people identified as white.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: BLACK
Attribute_Definition: Number of people identified as black.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: AMERI_ES
Attribute_Definition:
Number of people identified as American Indian, Eskimo, or Aleut.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: ASIAN_PI
Attribute_Definition: Number of people identified as Asian or Pacific Islander.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: OTHER
Attribute_Definition:
Number of people identified as belonging to a race other than white, black, American Indian, or Asian.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: HISPANIC
Attribute_Definition:
Number of people of all races identified as being of Hispanic origin.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: AGE_UNDER5
Attribute_Definition: Number of people 0 to 4 years of age.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: AGE_5_17
Attribute_Definition: Number of people 5 to 17 years of age.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: AGE_18_29
Attribute_Definition: Number of people 18 to 29 years of age.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: AGE_30_49
Attribute_Definition: Number of people 30 to 49 years of age.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: AGE_50_64
Attribute_Definition: Number of people 50 to 64 years of age.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: AGE_65_UP
Attribute_Definition: Number of people 65 years of age and over.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: NEVERMARRY
Attribute_Definition: Number of people who have never married.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: MARRIED
Attribute_Definition: Number of people who are married
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: SEPARATED
Attribute_Definition: Number of people who are separated from their spouse.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: WIDOWED
Attribute_Definition: Number of people whose spouse died.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: DIVORCED
Attribute_Definition: Number of people who are divorced.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: HSEHLD_1_M
Attribute_Definition: Number of one-person male households.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: HSEHLD_1_F
Attribute_Definition: Number of one-person female households.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: MARHH_CHD
Attribute_Definition: Number of households with a married couple and related children
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: MARHH_NO_C
Attribute_Definition: Number of households with a married couple and no related child
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: MHH_CHILD
Attribute_Definition: Number of households with a man and children but no wife.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: FHH_CHILD
Attribute_Definition: Number of households with a woman and children but no husband.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: HSE_UNITS
Attribute_Definition: Total number of housing units.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: VACANT
Attribute_Definition: Number of housing units that are vacant.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: OWNER_OCC
Attribute_Definition: Number of housing units that are occupied by the owner.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: RENTER_OCC
Attribute_Definition: Number of housing units that are occupied by renters.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: MEDIAN_VAL
Attribute_Definition: Median value of all housing units.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: MEDIANRENT
Attribute_Definition: Median rent charged for all housing units that are rented.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: UNITS_1DET
Attribute_Definition:
Number of housing units with one detached unit in the structure.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: UNITS_1ATT
Attribute_Definition:
Number of housing units with one attached unit in the structure.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: UNITS2
Attribute_Definition: Number of housing uits with two units in the structure.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: UNITS3_9
Attribute_Definition:
Number of housing units with three to nine units in the structure.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: UNITS10_49
Attribute_Definition: Number of housing units with 10 to 49 units in the structure.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: UNITS50_up
Attribute_Definition: Number of housing units with 10 to 49 units in the structure.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: MOBILEHOME
Attribute_Definition: Number of mobile homes or trailers.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: TOTAL_VOTE
Attribute_Definition: The total number of voters or people of voting age.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: WHITE_VOTE
Attribute_Definition:
The total number of voters or people of voting age identified as white.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: BLACK_VOTE
Attribute_Definition:
The total number of voters or people of voting age identified as black.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: OTHER_VOTE
Attribute_Definition:
Number of voters or people of voting age identified as belonging to a race other than white, black, or hispanic.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: HSPNC_VOTE
Attribute_Definition:
The total number of voters or people of voting age identified as hispanic.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: DESCRIPT
Attribute_Definition: FGDL added item containing total population numbers.
Attribute_Definition_Source: Unknown
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Operator
Contact_Organization: FLORIDA GEOGRAPHIC DATA LIBRARY
Contact_Address:
Address_Type: Physical
Address:
431 Architecture Building PO Box 115706
City: Gainesville
State_or_Province: Florida
Postal_Code: 32611-5706
Contact_Voice_Telephone: (352) 3920997, Operator
Contact_Electronic_Mail_Address: <http://www.fgdl.org/fgdldocs/document/techsupp.htm>
Hours_of_Service: 24 Hours / Day
Contact_Instructions:
Please visit the web site, <http://www.fgdl.org>, for all questions or concerns.
Distribution_Liability:
Florida Geographic Data Library is a product of the University of Florida GeoPlan Center with support from the Florida Department of Transportation and the Florida Department of Environmental Protection. THE FGDL DATA AS PROVIDED BY CONTRIBUTING ORGANIZATIONS AND ANY PROGRAMMING SOFTWARE CREATED BY THE UNIVERSITY OF FLORIDA GEOPLAN CENTER (COLLECTIVELY THE "MATERIALS") ARE COPYRIGHTED BY THE UNIVERSITY OF FLORIDA GEOPLAN CENTER FOR THE FGDL CONTRIBUTING AGENCIES AND ORGANIZATIONS (THE "DATA PROVIDERS"). DO NOT REPRODUCE, REDISTRIBUTE OR RESELL THE MATERIALS, OR PROVIDE THE MATERIALS FOR FREE TO CUSTOMERS OR CLIENTS, OR PLACE THE MATERIALS FOR DOWNLOAD ON A WEBSITE. ADDITIONALLY, WHEN USING FGDL DATA OR SOFTWARE IN PROJECTS, MAPS, ETC.; YOU AGREE TO ACKNOWLEDGE THE FGDL AS A DATA SOURCE. THE MATERIALS ARE PROVIDED "AS IS". THE UNIVERSITY OF FLORIDA GEOPLAN CENTER MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE QUALITY OR SUITABILITY OF THE MATERIALS, EITHER EXPRESSLY OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE UNIVERSITY OF FLORIDA GEOPLAN CENTER MAKES NO WARRANTIES, GUARANTIES OR REPRESENTATIONS AS TO THE TRUTH, ACCURACY OR COMPLETENESS OF THE DATA PROVIDED BY THE FGDL CONTRIBUTING ORGANIZATIONS. THE UNIVERSITY OF FLORIDA GEOPLAN CENTER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED AS A RESULT OF USING, MODIFYING, CONTRIBUTING OR DISTRIBUTING THE MATERIALS.
Metadata_Reference_Information:
Metadata_Date: 2001
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Operator
Contact_Address:
Address_Type: Physical
Address: Tiger Mapping Service
City: Washington
State_or_Province: D.C.
Postal_Code: 20233
Contact_Voice_Telephone: (301) 457-1128 (Geography) , (301) 457-4100 (Customer Service)
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.7.3 on Fri Aug 3 15:34:29 2001