Metadata

fox-censusblk

Frequently-asked questions:

What does this data set describe?
Title:
fox-censusblk

Abstract:

U.S. Block Groups represents the Census block groups clipped to the Fox watershed boundary derived from the Illinois HUC12 (ilhuc12geo83) hydrologic unit boundary layer which was developed by delineating the boundary lines on 1:24,000 base maps.


Supplemental information:

Largest scale when displaying the data: 1:100,000.


  1. How should this data set be cited?

    Geographic Data Technology, Inc. (GDT), ESRI, 20021201, fox-censusblk: ESRI Data & Maps 2003, ESRI, Redlands, California, USA.

    Other citation details:
    Location: \usa

  2. What geographic area does the data set cover?

    Bounding coordinates:
    West: -89.092786
    East: -88.034141
    North: 42.503011
    South: 41.336246

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar date: 200207
    Calendar date: 2000
    Currentness reference:

    publication date: 200207; ground condition: 2000


  5. What is the general form of this data set?

    Geospatial data presentation form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • G-polygon (698)

    2. What coordinate system is used to represent geographic features?

      The map projection used is Lambert Conformal Conic.

      Projection parameters:
      Standard parallel: 33.000000
      Standard parallel: 45.000000
      Longitude of central meridian: -89.500000
      Latitude of projection origin: 33.000000
      False easting: 2999994.000000
      False northing: 0.000000

      Planar coordinates are encoded using coordinate pair.
      Abscissae (x-coordinates) are specified to the nearest 0.001024.
      Ordinates (y-coordinates) are specified to the nearest 0.001024.
      Planar coordinates are specified in survey feet.

      The horizontal datum used is D_Clarke_1866.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.

  7. How does the data set describe geographic features?

    fox-censusblk

    The polygons represent Census block groups within United States. A block group is a combination of census blocks that is a subdivision of a census tract or block numbering area. A block group consists of all blocks whose numbers begin with the same digit in a given census tract or block numbering area. The block group is the lowest level of geography for which the Census Bureau has tabulated sample data in the 2000 census.

     (Source:

    Department of Commerce, Census Bureau

    )

    FID

    Internal feature number.

     (Source:

    ESRI

    )

    Sequential unique whole numbers that are automatically generated.

    Shape

    Feature geometry.

     (Source:

    ESRI

    )

    Coordinates defining the features.

    AREA

    The area of the block group in square miles using Albers Equal Area Projection.

     (Source:

    ESRI

    )

    Calculated areas for the features.

    STATE_FIPS

    The FIPS code (two-digit number) for the state in which the block group is located.

     (Source:

    Department of Commerce, National Institute of Standards and Technology

    )

    Formal codeset
    Codeset name: Federal Information Processing Standards
    Codeset source: National Institute of Standards and Technology

    CNTY_FIPS

    The FIPS code (three-digit number) for the county in which the block group is located.

     (Source:

    Department of Commerce, National Institute of Standards and Technology

    )

    Formal codeset
    Codeset name: Federal Information Processing Standards
    Codeset source: National Institute of Standards and Technology

    STCOFIPS

    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.

     (Source:

    Department of Commerce, National Institute of Standards and Technology

    )

    Formal codeset
    Codeset name: Federal Information Processing Standards
    Codeset source: National Institute of Standards and Technology

    TRACT

    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.

     (Source:

    Department of Commerce, Census Bureau

    )

    Formal codeset
    Codeset name: Federal Information Processing Standards
    Codeset source: National Institute of Standards and Technology

    BLKGRP

    The Census code (four-digit number) for the block group.

     (Source:

    Department of Commerce, Census Bureau

    )

    Formal codeset
    Codeset name: Federal Information Processing Standards
    Codeset source: National Institute of Standards and Technology

    FIPS

    The combined state and county FIPS codes, and tract and block group numbers. The combined code (twelve digit number) provides a unique block group identifier.

     (Source:

    Department of Commerce

    )

    Formal codeset
    Codeset name: Federal Information Processing Standards
    Codeset source: National Institute of Standards and Technology

    POP2000

    The 2000 population of the block group.

     (Source:

    Department of Commerce, Census Bureau

    )

    Populations for the features.

    POP00_SQMI

    The 2000 population of the block group per square mile.

     (Source:

    Department of Commerce, Census Bureau; ESRI

    )

    Calculated populations per square mile for the features.

    WHITE

    The number of people identified as White alone.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    BLACK

    The number of people identified as Black or African American alone.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    AMERI_ES

    The number of people identified as American Indian or Alaska Native alone.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    ASIAN

    The number of people identified as Asian alone.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    HAWN_PI

    The number of people identified as Native Hawaiian and other Pacific Islander alone.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    OTHER

    The number of people identified as some other race alone.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    MULT_RACE

    The number of people identified as two or more races.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    HISPANIC

    The number of people identified as Hispanic or Latino.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    MALES

    The number of males.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    FEMALES

    The number of females.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    AGE_UNDER5

    The number of people 0 to 4 years of age.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    AGE_5_17

    The number of people 5 to 17 years of age.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    AGE_18_21

    The number of people 18 to 21 years of age.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    AGE_22_29

    The number of people 22 to 29 years of age.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    AGE_30_39

    The number of people 30 to 39 years of age.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    AGE_40_49

    The number of people 40 to 49 years of age.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    AGE_50_64

    The number of people 50 to 64 years of age.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    AGE_65_UP

    The number of people 65 years of age and over.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    MED_AGE

    The median age for both sexes.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    MED_AGE_M

    The median age for males.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    MED_AGE_F

    The median age for females.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    HOUSEHOLDS

    The total number of households.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    AVE_HH_SZ

    The average household size.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    HSEHLD_1_M

    The number of one-person male households.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    HSEHLD_1_F

    The number of one-person female households.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    MARHH_CHD

    The number of family households with a married couple and related children under 18 years.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    MARHH_NO_C

    The number of family households with a married couple and no related children under 18 years.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    MHH_CHILD

    The number of family households with a man and related children under 18 years but no wife.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    FHH_CHILD

    The number of family households with a woman and related children under 18 years but no husband.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    FAMILIES

    The number of families.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    AVE_FAM_SZ

    The average family size.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    HSE_UNITS

    The total number of housing units.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    VACANT

    The number of housing units that are vacant.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    OWNER_OCC

    The number of housing units that are occupied by the owner.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

    RENTER_OCC

    The number of housing units that are occupied by renters.

     (Source:

    Department of Commerce, Census Bureau

    )

    Numbers for the features.

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Who produced the data set?
  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

    • Geographic Data Technology, Inc. (GDT)
    • ESRI

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    Kathleen J. Brown
    Illinois State Water Survey

    2204 Griffith Drive

    Champaign, IL 61820-7495
    USA

    217-333-6778 (voice)
    217-333-6540 (FAX)
    katbrown@uiuc.edu
    Hours of Service: 8-5 Central Standard Time
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Why was the data set created?

U.S. Block Groups provides boundaries and demographic information for Census block groups within United States. The boundaries are consistent with the tract, county, and state data sets.


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How was the data set created?
  1. Where did the data come from?

    GDT Dynamap/Census Boundaries v 4.2 (source 1 of 2)

    Geographic Data Technology, Inc., 200207, Dynamap/Census Boundaries v 4.2: Dynamap®/Census Boundaries v 4.2, Geographic Data Technology, Inc, Lebanon, New Hampshire, USA.

    Type of source media: CD?ROM
    Source scale denominator: 100000
    Source contribution:

    Attribute and geospatial data


    Census SF1 (source 2 of 2)

    Department of Commerce, Census Bureau, 2001, Summary File 1 (SF1): Summary File 1 (SF1) 2000, Department of Commerce, Census Bureau, USA.

    Other citation details:
    The Summary File 1 (SF1) data is based on the 2000 Census of Population.

    Type of source media: CD-ROM
    Source contribution:

    Attribute data


  2. What changes have been made?

    Date: 200207 (change 1 of 4)

    How GDT Creates These Files: The data included in the boundary files was extracted from the 2000 Census Version TIGER/Line files (CD?ROM edition). Once extracted, the County, Tract, and Block Group information was edited as one database, assuring that they have perfect overlay characteristics where appropriate. When all editing was complete, the different layers were separated into products.


    Data sources produced in this process:
    • GDT Dynamap/Census Boundaries v 4.2

    Date: 20021112 (change 2 of 4)

    The following steps were performed by ESRI: Extracted 2000 Census state block group geography data sets from GDT Dynamap/Census Boundaries. Merged all into a nationwide file. Generalized (tolerance unknown). Converted Hawaii to North American Datum of 1983 (NAD83). Added demographic attributes from Summary File 1 (SF1). Manually updated the attribute values for the new features. Recalculated AREA and POP00_SQMI attributes and reformatted all attributes. Created ArcView legend file (.avl), ArcGIST layer file (.lyr) file, projection file (.prj), and spatial indices.


    Data sources used in this process:
    • GDT Dynamap/Census Boundaries v 4.2
    • Census SF1

    (change 3 of 4)

    Metadata imported.


    Data sources used in this process:
    • D:\DOCUME~1\kbrown\LOCALS~1\Temp\xml18D.tmp

    (change 4 of 4)

    Dataset copied.


    Data sources used in this process:
    • \\Ohio\GISCoverages_Fox\reportmaps\fox-censusblk

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How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

    The geospatial part of this data set was extracted from the 2000 Census Version TIGER/Line® files (CD?ROM edition). The positional accuracy of the TIGER/Line coordinates varies with the source materials used but at best meets the established National Map Accuracy standards (+/- 167 feet approximately) where 1:100,000-scale maps from the USGS are the source. The Census Bureau cannot specify the accuracy of feature updates added by its field staff or of features derived from the GBF/DIME-Files or other map sources. Thus, the level of positional accuracy in the TIGER/Line files is not suitable for high-precision measurement applications such as engineering problems, property transfers, or other uses that might require highly accurate measurements of the earth's surface. The data set was generalized (tolerance unknown) to remove excess vertices, not detail. The positional accuracy is unchanged.


  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    After processing, the data set is checked for drawing display and number of records and file sizes compared with source materials.


  5. How consistent are the relationships among the observations, including topology?

    No duplicate features are present.


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How can someone get a copy of the data set?
Are there legal restrictions on access or use of the data?

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: 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). 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.


Distributor 1 of 1

  1. Who distributes the data set?

    ESRI; ESRI International Distributors

    380 New York Street

    Redlands, California 92373-8100
    USA

    800-447-9778 (voice)
    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.


  2. What's the catalog number I need to order this data set?

    Offline Data

  3. What legal disclaimers am I supposed to read?

    See use constraints.


  4. How can I download or order the data?

    • Availability in digital form:


      • Data format:

      		 in format SHP

      The SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBASE® format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file (*.shp.xml) contains the metadata describing the data set (optional).

       Size: 352.451

      Media you can order:

      		 CD?ROM or DVD?ROM (Density 650 MB (megabytes)) (format ISO 9660)

    • Cost to order the data: Software purchase price


    • Special instructions:

      ESRI Data & Maps is available only as part of ESRI® software.


  5. Is there some other way to get the data?

  6. What hardware or software do I need in order to use the data set?

    To use this data requires software that supports ArcView® GIS shapefiles.

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Who wrote the metadata?
Dates:
Last modified: 20040303

Metadata author:
Kathleen J. Brown
Illinois State Water Survey

2204 Griffith Drive

Champaign, IL 61820-7495
USA

217-333-6778 (voice)
217-333-6540 (FAX)
katbrown@uiuc.edu
Hours of Service: 8-5 Central Standard Time

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:
  • http://www.esri.com/metadata/esriprof80.html

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