FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: US CENSUS BLOCKS - 2000 (2009 SPATIAL UPDATE)

Geodataset Name:       CENBLK2000_MAY09
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Polygon
Feature Count:         362499
GENERAL DESCRIPTION:
This dataset contains US Census Bureau 2000 data for the State of Florida. The data contains selected fields from the Summary 1 file that includes information on total population, race, sex, age, and household. This data is at the block level, the smallest unit of census data. Using GIS techniques, it is possible to summarize the data by Block Group, Tract, Traffic Analysis Zone (TAZ), Zip Code Tabulation Area (ZCTA), or County. This layer is an update to the existing 2000 Blocks, the record count and attribute information are the same, but the linework has been updated as part of the U.S. Census Bureau's MAF/TIGER Accuracy Improvement Project.
DATA SOURCE(S):                    U.S. Census Bureau
SCALE OF ORIGINAL SOURCE MAPS:     Unknown
GEODATASET EXTENT:                 State of Florida
PUBLICATION DATE: 2009 TIME PERIOD OF CONTENT: Begin Date: 200901 End Date: 200905 DOWNLOAD LINK: http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

Datafile Name: CENBLK2000_MAY09.DBF
ITEM NAME WIDTH TYPE
OBJECTID
4 OID
Shape
4 Geometry
MTFCC00
5 String
UR00
1 String
UACE00
5 String
ALAND00
8 Double
AWATER00
8 Double
INTPTLAT00
11 String
INTPTLON00
12 String
FIPSSTCO
5 String
TRACT2000
6 String
BLOCK2000
4 String
STFID
15 String
STFID_RELA
8 Double
FILEID
6 String
STUSAB
2 String
SUMLEV
3 String
GEOCOMP
2 String
STATE
2 String
COUNTY
3 String
COUNTYSC
2 String
TRACT
6 String
BLKGRP
1 String
BLOCK
4 String
ZCTA3
3 String
ZCTA5
5 String
AREALAND
8 Double
AREAWATR
8 Double
HU100
8 Double
TAZ
6 String
TAZ2NOSPA
15 String
BGGRP_DISV
16 String
TRACT_DISV
16 String
TAZ_DISV
15 String
POP2000
8 Double
WHITE
8 Double
BLACK
8 Double
AMERI_ES
8 Double
ASIAN
8 Double
HAWN_PI
8 Double
OTHER
8 Double
MULT_RACE
8 Double
HISPANIC
8 Double
MALES
8 Double
FEMALES
8 Double
AGE_UNDER5
8 Double
AGE_5_17
8 Double
AGE_18_21
8 Double
AGE_22_29
8 Double
AGE_30_39
8 Double
AGE_40_49
8 Double
AGE_50_64
8 Double
AGE_65_UP
8 Double
MED_AGE
8 Double
MED_AGE_M
8 Double
MED_AGE_F
8 Double
HOUSEHOLDS
8 Double
AVE_HH_SZ
8 Double
HSEHLD_1_M
8 Double
HSEHLD_1_F
8 Double
MARHH_CHD
8 Double
MARHH_NO_C
8 Double
MHH_CHILD
8 Double
FHH_CHILD
8 Double
FAMILIES
8 Double
AVE_FAM_SZ
8 Double
HSE_UNITS
8 Double
URBAN
8 Double
RURAL
8 Double
VACANT
8 Double
OWNER_OCC
8 Double
RENTER_OCC
8 Double
ACRES
8 Double
POPDENS
8 Double
PCTMNRTY
2 SmallInteger
PCT_ABV40
2 SmallInteger
PCT_65ABV
8 Double
PCT_WHITE
8 Double
WHITE_DEN
8 Double
PCT_BLACK
8 Double
BLACK_DEN
8 Double
PCT_AMERI
8 Double
AMERI_DEN
8 Double
PCT_ASIAN
8 Double
ASIAN_DEN
8 Double
PCT_HAWN
8 Double
HAWN_DEN
8 Double
PCT_OTHER
8 Double
OTHER_DEN
8 Double
PCT_MULT
8 Double
MULT_DEN
8 Double
PCT_HISP
8 Double
HISP_DEN
8 Double
LOGRECNO
8 Double
WHITE_NH
4 Integer
AGE_22_24
8 Double
AGE_25_29
8 Double
AGE_25ABV
8 Double
PCT_25ABV
8 Double
DESCRIPT
8 Double
FGDLAQDATE
36 Date
AUTOID
8 Double
SHAPE.AREA
0 Double
SHAPE.LEN
0 Double

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item
Item Description
OBJECTID Internal feature number.

Shape Feature geometry.

MTFCC00 MAF/TIGER feature class code
G5040 = Tabulation Block


UR00 Census 2000 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


UACE00 Census 2000 urban area code

ALAND00 Census 2000 land area

AWATER00 Census 2000 water area

INTPTLAT00 Census 2000 latitude of the internal point

INTPTLON00 Census 2000 longitude of the internal point

FIPSSTCO State + County FIPS

TRACT2000 Tract

BLOCK2000 Block

STFID State + County + Tract + Block FIPS

STFID_RELA State + County + Tract + Block FIPS (this is in number format as compared to text format for STFID field)

FILEID File Identification

STUSAB State/US-Abbreviation (USPS)

SUMLEV Summary Level

GEOCOMP Geographic Component

STATE State (FIPS)

COUNTY County

COUNTYSC County Size Code

TRACT Census Tract

BLKGRP Block Group

BLOCK Block

ZCTA3 ZIP Code Tabulation Area (3 digit)

ZCTA5 ZIP Code Tabulation Area (5 digit)

AREALAND Area (land)

AREAWATR Area (water)

HU100 Housing Count (100%)

TAZ Traffic Analysis Zone (TAZ)

TAZ2NOSPA TAZ with out spaces

BGGRP_DISV Dissolve field for Block Groups

TRACT_DISV Dissolve field for Tracts

TAZ_DISV Dissolve field for TAZ

POP2000 Population 2000 (P007001)

WHITE White alone (P007002)

BLACK Black or african american alone (P007003)

AMERI_ES American indian and alaska native alone (P007004)

ASIAN Asian alone (P007005)

HAWN_PI Native hawaiian and other pacific islander alone (P007006)

OTHER Some other race alone (P007007)

MULT_RACE 2 or more races (P007008)

HISPANIC People who are hispanic or latino (P011001)

MALES Males (P012002)

FEMALES Females (P012026)

AGE_UNDER5 Male and female under 5 yrs (P012003 + P012027)

AGE_5_17 Male and female 5 to 17 yrs (P012004-006 + P012028-030)

AGE_18_21 Male and female 18 to 21 yrs (P012007-009 + P012031-033)

AGE_22_29 Male and female 22 to 29 yrs (P012010-011 + P012034-035)

AGE_30_39 Male and female 30 to 39 yrs (P012012-013 + P012036-037)

AGE_40_49 Male and female 40 to 49 yrs (P012014-015 + P012038-039)

AGE_50_64 Male and female 50 to 64 yrs (P012016-019 + P012040-043)

AGE_65_UP Male and female 65 yrs and over (P012020-025 + P012044-049)

MED_AGE Median age both sexes (P013001)

MED_AGE_M Median age males (P013002)

MED_AGE_F Median age females (P013003)

HOUSEHOLDS Households (P015001)

AVE_HH_SZ Average household size (P017001)

HSEHLD_1_M 1-person household male householder (P018003)

HSEHLD_1_F 1-person household female householder (P018004)

MARHH_CHD Family households married-couple family w/ own children under 18 yrs (P018008)

MARHH_NO_C Family households married-couple family no own children under 18 yrs (P018009)

MHH_CHILD Family households other family male householder no wife present w/ own children under 18 yrs (P018012)

FHH_CHILD Family households other family female householder no husband present w/ own children under 18 yrs (P018015)

FAMILIES Families (P031001)

AVE_FAM_SZ Average family size (P033001)

HSE_UNITS Housing units (H001001)

URBAN Housing units urban (H002002)

RURAL Housing units rural (H002005)

VACANT Housing units vacant (H003003)

OWNER_OCC Housing units owner occupied (H004002)

RENTER_OCC Housing units renter occupied (H004003)

ACRES Total acres of block (calculated using x-tools in AV 3.2)

POPDENS Population density (pop2000/acres)

PCTMNRTY Percent Minority Population ((Pop2000-P004005)/Pop2000)X100

PCT_ABV40 Percent Minority Population [PCT_ABV40] Above 40%
1 = Minority Population Above 40%

0 = Minority Population 40% or below


PCT_65ABV Percent of the population that is 65 years or older

PCT_WHITE Percent of the population that is White

WHITE_DEN WHITE people per acre (WHITE/ACRE)

PCT_BLACK Percent of the population that is Black

BLACK_DEN Black people per acre (BLACK/ACRE)

PCT_AMERI Percent of the population that is AMERI_ES

AMERI_DEN AMERI_ES people per acre (AMERI_ES/ACRE)

PCT_ASIAN Percent of the population that is ASIAN

ASIAN_DEN ASIAN people per acre (ASIAN/ACRE)

PCT_HAWN Percent of the population that is HAWN

HAWN_DEN HAWN people per acre (HAWN/ACRE)

PCT_OTHER Percent of the population that is OTHER

OTHER_DEN OTHER people per acre (OTHER/ACRE)

PCT_MULT Percent of the population that is MULT_RACE

MULT_DEN MULT_RACE people per acre (MULT_RACE/ACRE)

PCT_HISP Percent of the population that is Hispanic

HISP_DEN Hispanic people per acre (HISPANIC/ACRE)

LOGRECNO Logical Record Number (join field for tables)

WHITE_NH White pople not Hispanic (P004005)

AGE_22_24 Male and female 22 to 24 yrs (P012010+P012034)

AGE_25_29 Male and female 25 to 29 yrs (P012011+P012035)

AGE_25ABV Male and female 25 yrs and over

PCT_25ABV Percent of the population that is 25 years or older

DESCRIPT GeoPlan added field based on Total Population

FGDLAQDATE Date GeoPlan acquired data from source.

AUTOID Unique ID added by GeoPlan

SHAPE.AREA Area in meters

SHAPE.LEN Perimeter in meters


USER NOTES:
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.

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

REFERENCES:


DATA LINEAGE SUMMARY:
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

The spatial portion of this data set was downloaded in November 2010. The data was downloaded in shapefile format from the following website: http://www2.census.gov/cgi-bin/shapefiles2009/state-files?state=12 The shapefile was in Decimal Degrees Nad 83 and was projected to Albers HPGN. The attribute table from the existing FGDL layer was then joined to this shapefile based on BLKIDFP00 and STFID fields. The following fields were deleted because they were redundant: STATEFP00 COUNTYFP00 TRACTCE00 BLKGRPCE00 BKGPIDFP00 NAMELSAD00 The following fields were added with the new data when compared to the existing FGDL Block layer, they appear at the beginning of the attribute table (far left): MTFCC00 FUNCSTAT00 ALAND00 AWATER00 INTPTLAT00 INTPTLON00 Name was changed from tl_2009_12_tabblock00 to cenblk2000_may09 Process Date: 20101123
Data imported to ArcSDE and exported as a shapefile. Process Date: 20101206
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. Census Bureau
MAF/TIGER
4600 Silver Hill Road, Stop 7400
Washington, DC
20233-7400
301-763-1128

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

FGDL CONTACT:
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