Geodataset Name:       CENBLK2010_MAR11
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Polygon
Feature Count:         484481

DATA SOURCE(S):                    U.S. Census Bureau, Redistricting Data Office
SCALE OF ORIGINAL SOURCE MAPS:     Varies
GEODATASET EXTENT:                 State of Florida

PUBLICATION DATE:                  20110317
TIME PERIOD OF CONTENT:            20110317
DOWNLOAD LINK:                     http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

Datafile Name: CENBLK2010_MAR11.DBF

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item	Item Description
OBJECTID	Internal feature number.
Shape	Feature geometry.
STATEFP10	2010 Census state Federal Information Processing Standards
COUNTYFP10	2010 Census county Federal Information Processing Standards
TRACTCE10	2010 Census census tract code 000000 = Water tract in some coastal and Great Lakes water and territorial sea 000100 to 998999 = Census tract number
BLOCKCE10	2010 Census tabulation block number 0001 to 9999 = tabulation block number
GEOID10	Block identifier; a concatenation of 2010 Census state Federal Information Processing Standards (FIPS) code, county FIPS code, census tract code, and tabulation block number
NAME10	2010 Census tabulation block name; a concatenation of "Block", Census state Federal Information Processing Standards (FIPS) code, county FIPS code, census tract code, and tabulation block number
MTFCC10	MAF/TIGER feature class code G5040 = Tabulation block
UR10	2010 Census urban/rural indicator M = Mixed - part of the land area is classified as urban and part is classified as rural N = Not Applicable (water-only and international areas) R = Area is classified as rural U = Area is classified as urban
UACE10	2010 Census urban area code 00001 to 98999 = Urban Area Code
FUNCSTAT10	2010 Census functional status S = Statistical entity
ALAND10	2010 Census land area (square meters) 0 to 9,999,999,999,999 = Blank
AWATER10	2010 Census water area (square meters) 0 to 9,999,999,999,999 = Blank
INTPTLAT10	2010 Census latitude of the internal point 00 = Blank
INTPTLON10	2010 Census longitude of the internal point 00 = Blank
SUMLEV	Census Summary level 750 = Census block
BLACK	Black alone (P0010004)
AMERI_ES	American indian or Alaska native alone (P0010005)
ASIAN	Asian alone (P0010006)
HAWN_PI	Native Hawaiian and other Pacific islander alone (P0010007)
OTHER	Some other race alone (P0010008)
MULT_RACE	2 or more races (P0010009)
HISPANIC	People who are hispanic or latino (P0020002)
NOT_HISP	People who are not hispanic or latino (P0020003)
HSE_UNITS	Total number of housing units (H0010001). A housing unit is defined by the Census Bureau as a living quarters in which the occupant or occupants live separately from any other individuals in the building and have direct access to their lving quarters from outside the building or through a common hall.
OCCUPIED	Occupied housing units (H0010002)
VACANT	Vacant housing units (H0010003)
POP18	Population over the age of 18 (P0030001)
POP2010	Total population (P0010001)
ACRES	Acreage of block
PCT_WHITE	White percentage of total population ((WHITE/POP2010)*100)
PCT_BLACK	Black percentage of total population ((BLACK/POP2010)*100)
PCT_AMERI	American indian or Alaska native percentage of total population ((AMERI_ES/POP2010)*100)
PCT_ASIAN	Asian percentage of total population ((ASIAN/POP2010)*100)
PCT_HAWN	Native Hawaiian and other Pacific islander percentage of total population ((HAWN_PI/POP2010)*100)
PCT_OTHER	Other race percentage of total population ((OTHER/POP2010)*100)
PCT_MULTI	Percentage of total population that is two or more races ((MULT_RACE/POP2010)*100)
PCT_HISP	Hispanic percentage of total population ((HISPANIC/POP2010)*100)
PCT_OVER18	Percent of the population over the age of 18 ((POP18/POP2010)*100)
PCT_OCC	Percentage of housing units that are occupied ((OCCUPIED/HSE_UNITS)*100)
PCT_VACANT	Percentage of housing units that are vacant ((VACANT/HSE_UNITS)*100)
DEN_WHITE	Denisty of White population per acre ([WHITE]/[ACRES])
DEN_BLACK	Density of Black or African American population per acre ([BLACK]/[ACRES])
DEN_AMERI	Density of American Indian or Alaska native population per acre ([AMERI_ES]/[ACRES])
DEN_ASIAN	Denisty of Asian population per acre ([ASIAN]/[ACRES])
DEN_HAWN	Density of Native Hawaiian and other Pacific islander population per acre ([HAWN_PI]/[ACRES])
DEN_OTHER	Density of some other race population per acre ([OTHER]/[ACRES])
DEN_MULTI	Density of 2 or more races population per acre ([MULT_RACE]/[ACRES])
DEN_HISP	Density of Hispanic or latino population per acre ([HISPANIC]/[ACRES])
DEN_OVER18	Density of population over 18 years of age per acre ([POP18]/[ACRES])
HS_PER_AC	Density of housing units per acre ([HSE_UNITS]/[ACRES])
FGDLAQDATE	Date FGDL acquired the data
POPUNDER18	Population under the age of 18 years of age ([POP2010]-[POP18])
PCTUNDER18	Percent of the population under 18 years of age (([POPUNDER18]/[POP2010])*100)
DENUNDER18	Density of the population under 18 years of age ([POPUNDER18]/[ACRES])
BLKCHANGE	This field represents the relationship of the 2000 census blocks to the 2010 census blocks. The data in this field was derived from the Census 2000 Tabulation Block to 2010 Census Tabulation Block Relationship File. This file is available as a text file for download from the US Census Bureau. Block relationships between 2000 blocks to 2010 blocks may be one-to-one, many-to-one, one-to-many, or many-to-many. Use the GEOID00 to relate back to STFID field in CENBLK2000. 1 = No change in 2000 block geometry compared to 2010 block geometry (one-to-one). 2 = One 2000 block is represented by multiple 2010 blocks, i.e. the block was split in 2010 (one-to-many). 3 = Multiple 2000 blocks are represented by one 2010 block, i.e. the block was merged in 2010 (many-to-one). 4 = Multiple 2000 blocks are now represented by multiple 2010 blocks (many-to-many).
GEOID00	This field represents the 2000 census block identifier. If you are using CENBLK2000 from FGDL the GEOID00 can be related to the STFID field. Please note: in records where BLKCHANGE = 3 or 4 there will only be one GEOID00 listed of many.
DENPOP2010	Population density ([POP2010]/[ACRES])
WHITE	White alone (P0010003)
WHITE_NH	White alone, not hispanic (P0020005)
MINORITY	"Minority Population" or Population that is not white (note: Minority is not a Census Bureau term ([POP2010] - [WHITE_NH]))
PCT_MNRTY	Percent of the minority population (([MINORITY]/[POP2010])*100)
DEN_MNRTY	Density of minority population ([MINORITY]/[ACRES])
PCT_ABV40	Percent Minority Population [PCT_ABV40] Above 40% 1 = Minority Population Above 40% 0 = Minority Population 40% or below
AUTOID	No description
SHAPE.AREA	No description
SHAPE.LEN	No description

USER NOTES:

This data is provided 'as is'. GeoPlan relied on the integrity of the original data layer's topology

This data is provided 'as is' by GeoPlan and is complete to our knowledge.

GeoPlan relied on the integrity of the attribute information within the original data.

For the research and analysis of the 2010 Census Redistricting Summary File at the Census Block geography level. The data contains selected fields from the 2010 Census. Census Block Groups are geographic entities made up of Census Blocks and that are contained within the same Census Tract. Block Groups generally contain between 600 and 3,000 people, with an optimum size of 1,500 people.

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

NONE

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

REFERENCES:

redistricting tech guide: http://www.census.gov/prod/cen2010/doc/nsfrd.pdf

DATA LINEAGE SUMMARY:

The Redistricting Summary File was downloaded from the Census in .pl format from http://www2.census.gov/census_2010/01-Redistricting_File--PL_94-171/Florida/ and the database was compiled using the process steps in http://www.census.gov/rdo/pdf/0HowToUseMicrosoftAccessShells.pdf The 2010 TIGER line files were downloaded from the following site: http://www.census.gov/geo/www/tiger/tgrshp2010/tgrshp2010.html When received the data was in Geographic Lat/Long projection. The data was projected to Albers HPGN. The data was then joined to the 2010 Tiger/MAF shapefile based on the GEOID10 field. Selected fields (see below) were renamed to be similar to cenblk2000 fields and duplicate fields were deleted. The following fields were extracted from the tables and renamed: P0010001 - TOTAL POPULATION P0010003 - WHITE ALONE P0010004 - BLACK P0010005 - AMERICAN INDIAN P0010006 - ASIAN P0010007 - NATIVE HAWAIIAN P0010008 - SOME OTHER RACE P0010009 - 2 OR MORE RACES P0020002 - HISPANIC OR LATINO P0020003 - NOT HISPANIC OR LATINO P0030001 - TOTAL POPULATION 18 YEARS AND OVER H0010001 - TOTAL HOUSING UNITS H0010002 - OCCUPIED H0010003 - VACANT The following QaQc procedures were performed: -exported original shapefile to file GeoDatabase -FGDLAQDATE added based on date GeoPlan acquired data from source -Added PCT and DEN fields based on calculations defined in attribute definitions -Added BLKCHANGE field based on data derived from the Census 2000 Tabulation Block to 2010 Census Tabulation Block Relationship File. This file is available as a text file for download from the US Census Bureau. -Added GEOID00 field from data taken from 2010 Census Tabulation Block Relationship File. This field links back to CENBLK2000 using the STFID field. -Changed name from tl_2010_12_tabblock10.shp to CENBLK2010_MAR11 Process Date: 201103

MAP PROJECTION PARAMETERS:

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. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch
U.S. Census Bureau
4600 Silver Hill Road, Stop 7400
Washington, DC
20233-7400
301-763-1128


http://www.census.gov/rdo/
geo.tiger@census.gov

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