FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION TITLE: US CENSUS BLOCKS - 2010 (NO POPULATION STATISTICS) Geodataset Name: CENBLK2010 Geodataset Type: SHAPEFILE Geodataset Feature: Polygon Feature Count: 431965 |
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GENERAL DESCRIPTION:
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DATA SOURCE(S): U.S. Census Bureau SCALE OF ORIGINAL SOURCE MAPS: Unknown GEODATASET EXTENT: State of Florida |
FEATURE ATTRIBUTE TABLES:
Datafile Name: CENBLK2010.DBF
ITEM NAME | WIDTH | TYPE |
OBJECTID
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4 | OID |
Shape
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4 | Geometry |
STATEFP
|
2 | String |
STATENS
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8 | String |
COUNTYFP
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3 | String |
STATEFP00
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2 | String |
COUNTYFP00
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3 | String |
TRACTCE00
|
6 | String |
BLOCKCE00
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4 | String |
SUFFIX1CE
|
1 | String |
BLKIDFP
|
17 | String |
NAME
|
11 | String |
MTFCC
|
5 | String |
UR
|
1 | String |
UACE
|
5 | String |
FUNCSTAT
|
1 | String |
ALAND
|
8 | Double |
AWATER
|
8 | Double |
INTPTLAT
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11 | String |
INTPTLON
|
12 | String |
DESCRIPT
|
8 | Double |
FGDLAQDATE
|
36 | Date |
AUTOID
|
4 | Integer |
SHAPE.AREA
|
0 | Double |
SHAPE.LEN
|
0 | Double |
FEATURE ATTRIBUTE TABLES CODES AND VALUES:
Item | Item Description | |
OBJECTID |
Internal feature number. |
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Shape |
Feature geometry. |
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STATEFP |
Current state Federal Information Processing Standards (FIPS) code |
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STATENS |
Current state ANSI code |
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COUNTYFP |
Current county Federal Information Processing Standards (FIPS) code |
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STATEFP00 |
Census 2000 state Federal Information Processing Standards (FIPS) codes |
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COUNTYFP00 |
Census 2000 county Federal Information Processing Standards (FIPS) code |
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TRACTCE00 |
Census 2000 census tract code
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BLOCKCE00 |
Census 2000 tabulation block number
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SUFFIX1CE |
Current census block suffix 1
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BLKIDFP |
Current block identifier; a concatenation of Census 2000 state Federal Information Processing Standards (FIPS) code, Census 2000 county FIPS code, Census 2000 census tract code, Census 2000 tabulation block number, and current block suffix 1. |
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NAME |
Current tabulation block name; a concatenation of 'Block', the current tabulation block number, and the block suffix 1 |
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MTFCC |
MAF/TIGER feature class code
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UR |
Corrected Census 2000 urban/rural indicator
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UACE |
Corrected Census 2000 urban area code
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FUNCSTAT |
Current functional status
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ALAND |
Current land area |
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AWATER |
Current water area |
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INTPTLAT |
Current latitude of the internal point |
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INTPTLON |
Current longitude of the internal point |
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DESCRIPT |
GeoPlan added item that will be based on Total Population when it is released |
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FGDLAQDATE |
Date GeoPlan retreived data from source |
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AUTOID |
No description |
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SHAPE.AREA |
Area in meters |
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SHAPE.LEN |
Perimeter in meters |
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. |
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. |
GeoPlan relied on the integrity of the attribute information within the original data. |
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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. |
This data is provided 'as is' and its horizontal positional accuracy has not been verified by GeoPlan |
This data is provided 'as is' and its vertical positional accuracy has not been verified by GeoPlan |
The TIGER/Line Shapefile products are not copyrighted however TIGER/Line and Census TIGER are registered trademarks of the U.S. Census Bureau. These products are free to use in a product or publication, however acknowledgement must be given to the U.S. Census Bureau as the source. The boundary information in the TIGER/Line Shapefiles are for statistical data collection and tabulation purposes only; their depiction and designation for statistical purposes does not constitute a determination of jurisdictional authority or rights of ownership or entitlement and they are not legal land descriptions. Coordinates in the TIGER/Line shapefiles have six implied decimal places, but the positional accuracy of these coordinates is not as great as the six decimal places suggest. |
The Florida Geographic Data Library is a collection of Geospatial Data compiled by the University of Florida GeoPlan Center with support from the Florida Department of Transportation. GIS data available in FGDL is collected from various state, federal, and other agencies (data sources) who are data stewards, producers, or publishers. The data available in FGDL may not be the most current version of the data offered by the data source. University of Florida GeoPlan Center makes no guarantees about the currentness of the data and suggests that data users check with the data source to see if more recent versions of the data exist. Furthermore, the GIS data available in the FGDL are provided 'as is'. 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 data sources. 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 shall not be liable for any damages suffered as a result of using, modifying, contributing or distributing the materials. A note about data scale: Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modeling purposes. Please be sure you are using the best available data. 1:24000 scale datasets 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 datasets are recommended for projects that are at the multi-county or regional level. 1:125000 scale datasets are recommended for projects that are at the regional or state level or larger. Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analysis. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our webpage at: http://geoplan.ufl.edu/education.html |
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TIGER/Line Shapefiles are extracted from the Census MAF/TIGER database by nation, state, county, and entity. Census MAF/TIGER data for the nation, state, county, and entity are then distributed among 58 shapefiles each containing attributes for line, polygon, or landmark geographic data. Process Date: 2009 |
Projection ALBERS Datum HPGN Units METERS Spheroid GRS1980 1st Standard Parallel 24 0 0.000 2nd Standard Parallel 31 30 0.000 Central Meridian -84 00 0.000 Latitude of Projection's Origin 24 0 0.000 False Easting (meters) 400000.00000 False Northing (meters) 0.00000
DATA SOURCE CONTACT (S):
Name: Abbr. Name: Address: Phone: Web site: E-mail: Contact Person: Phone: E-mail: |
U.S. Census Bureau MAF/TIGER 4600 Silver Hill Road, Stop 7400 Washington, DC 20233-7400 301-763-1128 |
Name: FLORIDA GEOGRAPHIC DATA LIBRARY Abbr. Name: FGDL Address: Florida Geographic Data Library 431 Architecture Building PO Box 115706 Gainesville, FL 32611-5706 Web site: http://www.fgdl.org Contact FGDL: Technical Support: http://www.fgdl.org/fgdlfeed.html FGDL Frequently Asked Questions: http://www.fgdl.org/fgdlfaq.html FGDL Mailing Lists: http://www.fgdl.org/fgdl-l.html For FGDL Software: http://www.fgdl.org/software.html