FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
TITLE: CENSUS BLOCK GROUP CENTROIDS, 1990
Geodataset Name: CBG1990 Geodataset Type: SHAPE Geodataset Feature: POINT
GENERAL DESCRIPTION:
This dataset contains Census Block Group centroid points 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.
DATA SOURCE(S): U.S. Bureau of the Census:
Spatial Patterns of Socioeconomic Data from 1970 to 2000
SCALE OF ORIGINAL SOURCE MAPS: 1:100,000
DATE OF AUTOMATION OR SOURCE: 1999
GEODATASET EXTENT: State of Florida
FEATURE ATTRIBUTE TABLES:
Datafile Name:CBG1990.DBF ITEM NAME WIDTH TYPE PRECISION SHAPE 6 SHAPEPOINT 0 AREAKEY 12 DECIMAL 0 INTPTLAT 19 DECIMAL 6 INTPTLNG 19 DECIMAL 6 STUSAB 2 CHARACTER 0 FIPS 5 DECIMAL 0 UNIQUE 4 DECIMAL 0 EDASUBEDA 5 CHARACTER 0 DR_CODE 1 CHARACTER 0 HUC 8 DECIMAL 0 REGION 1 CHARACTER 0 AREALAND 8 DECIMAL 0 AREAWAT 8 DECIMAL 0 C90POPUL 5 DECIMAL 0 C90URBN 5 DECIMAL 0 C90NURBN 5 DECIMAL 0 C90RNFAR 5 DECIMAL 0 C90RFARM 4 DECIMAL 0 C90WHITE 5 DECIMAL 0 C90BLACK 5 DECIMAL 0 C90OTHER 4 DECIMAL 0 C90ENGLI 5 DECIMAL 0 C90SPANI 5 DECIMAL 0 C90HLOTH 4 DECIMAL 0 C90AGE1 4 DECIMAL 0 C90AGE2 4 DECIMAL 0 C90AGE3 3 DECIMAL 0 C90AGE4 3 DECIMAL 0 C90AGE5 4 DECIMAL 0 C90AGE6 4 DECIMAL 0 C90AGE7 3 DECIMAL 0 C90AGE8 3 DECIMAL 0 C90AGE9 3 DECIMAL 0 C90AGE10 3 DECIMAL 0 C90AGE11 4 DECIMAL 0 C90AGE12 4 DECIMAL 0 C90AGE13 4 DECIMAL 0 C90AGE14 4 DECIMAL 0 C90AGE15 4 DECIMAL 0 C90AGE16 4 DECIMAL 0 C90AGE17 4 DECIMAL 0 C90AGE18 4 DECIMAL 0 C90AGE19 4 DECIMAL 0 C90AGE20 3 DECIMAL 0 C90AGE21 4 DECIMAL 0 C90AGE22 4 DECIMAL 0 C90AGE23 4 DECIMAL 0 C90MALE 5 DECIMAL 0 C90FEMA 5 DECIMAL 0 C90FI1 3 DECIMAL 0 C90FI2 3 DECIMAL 0 C90FI3 3 DECIMAL 0 C90FI4 4 DECIMAL 0 C90FI5 4 DECIMAL 0 C90FI6 4 DECIMAL 0 C90NCOLL 5 DECIMAL 0 C90COLLE 5 DECIMAL 0 C90EDUC1 4 DECIMAL 0 C90EDUC2 4 DECIMAL 0 C90EDUC3 4 DECIMAL 0 C90EDUC4 4 DECIMAL 0 C90OCCU1 4 DECIMAL 0 C90OCCU2 4 DECIMAL 0 C90OCCU3 4 DECIMAL 0 C90OCCU4 4 DECIMAL 0 C90OCCU5 4 DECIMAL 0 C90OCCU6 4 DECIMAL 0 C90OCCU7 4 DECIMAL 0 C90OCCU8 4 DECIMAL 0 C90OCCU9 4 DECIMAL 0 C90INDU1 3 DECIMAL 0 C90INDU2 4 DECIMAL 0 C90INDU3 4 DECIMAL 0 C90INDU4 4 DECIMAL 0 C90INDU5 3 DECIMAL 0 C90INDU6 4 DECIMAL 0 C90INDU7 4 DECIMAL 0 C90INDU8 4 DECIMAL 0 C90INDU9 4 DECIMAL 0 C90IND10 4 DECIMAL 0 C90IND11 4 DECIMAL 0 C90ABOVE 5 DECIMAL 0 C90BELOW 4 DECIMAL 0 C90NATIV 5 DECIMAL 0 C90FOREI 5 DECIMAL 0 C90FHOUS 5 DECIMAL 0 C90GQUAR 5 DECIMAL 0 C90ALLFA 4 DECIMAL 0 C90FAWFH 4 DECIMAL 0 C90M14YR 5 DECIMAL 0 C90F14YR 5 DECIMAL 0 C90SHOUS 5 DECIMAL 0 C90DHOUS 5 DECIMAL 0 C90ABROA 4 DECIMAL 0 C90MLFOR 5 DECIMAL 0 C90MNLFO 4 DECIMAL 0 C90FLFOR 4 DECIMAL 0 C90FNLFO 4 DECIMAL 0 C90INCO1 3 DECIMAL 0 C90INCO2 3 DECIMAL 0 C90INCO3 3 DECIMAL 0 C90INCO4 4 DECIMAL 0 C90INCO5 4 DECIMAL 0 C90INCO6 4 DECIMAL 0 C90FHABO 4 DECIMAL 0 C90FHBEL 4 DECIMAL 0 C90FABOV 4 DECIMAL 0 C90FBELO 4 DECIMAL 0 C90OWNER 4 DECIMAL 0 C90RENTE 4 DECIMAL 0 C90TSTR1 4 DECIMAL 0 C90TSTR2 4 DECIMAL 0 C90TSTR3 4 DECIMAL 0 C90TSTR4 5 DECIMAL 0 C90TSTR5 4 DECIMAL 0 C90GREN1 3 DECIMAL 0 C90GREN2 4 DECIMAL 0 C90GREN3 4 DECIMAL 0 C90GREN4 4 DECIMAL 0 C90GREN5 4 DECIMAL 0 C90TELE1 4 DECIMAL 0 C90TELE2 3 DECIMAL 0 C90TELE3 4 DECIMAL 0 C90TELE4 3 DECIMAL 0 C90AUTO1 4 DECIMAL 0 C90AUTO2 4 DECIMAL 0 C90AUTO3 4 DECIMAL 0 C90HEAT1 4 DECIMAL 0 C90HEAT2 4 DECIMAL 0 C90HEAT3 5 DECIMAL 0 C90HEAT4 4 DECIMAL 0 C90HEAT5 4 DECIMAL 0 H0250001 4 DECIMAL 0 H0250002 4 DECIMAL 0 H0250003 4 DECIMAL 0 H0250004 4 DECIMAL 0 H0250005 4 DECIMAL 0 H0250006 4 DECIMAL 0 H0250007 4 DECIMAL 0 H0250008 4 DECIMAL 0 DESCRIPT 5 DECIMAL 0
FEATURE ATTRIBUTE TABLES CODES AND VALUES:
ITEM ITEM DEFINITION
SHAPE Data attribute inherent to the ESRI shapefile format,
which defines the data as a point, polyline, or polygon.
AREAKEY Census 1990 Block Group Identifier
INTPTLAT Block Group Centroid Latitude
INTPTLNG Block Group Centroid Longitude
STUSAB State Abbreviation
FIPS FIPS Code
UNIQUE CAF Unique Code
EDASUBEDA Sub-watershed EDA/CDA/FDA Code
DR_CODE EDA/FDA flag
HUC HUC Code
REGION Region Code
AREALAND Area Land (0.001 Square Kilometers)
AREAWAT Area Water *0.001 Square Kilometers)
C90POPUL 1990 Total Population
C90URBN 1990 Urban Population
C90NURBN 1990 Nonurban Population
C90RNFAR 1990 Rural no farm population
C90RFARM 1990 Rural farm population
C90WHITE 1990 White Population
C90BLACK 1990 Black Population
C90OTHER 1990 Other Population
C90ENGLI 1990 English Language Population
C90SPANI 1990 Spanish Language Population
C90HLOTH 1990 Other Language Population
C90AGE1 1990 Persons Under 2 Years
C90AGE2 1990 Persons 3 to 4 Years
C90AGE3 1990 Persons 5 Years
C90AGE4 1990 Persons 6 Years
C90AGE5 1990 Persons 7 to 9 Years
C90AGE6 1990 Persons 10 to 13 Years
C90AGE7 1990 Persons 14 Years
C90AGE8 1990 Persons 15 Years
C90AGE9 1990 Persons 16 Years
C90AGE10 1990 Persons 17 Years
C90AGE11 1990 Persons 18 Years
C90AGE12 1990 Persons 19 Years
C90AGE13 1990 Persons 20 Years
C90AGE14 1990 Persons 21 Years
C90AGE15 1990 Persons 22 to 24 Years
C90AGE16 1990 Persons 25 to 34 Years
C90AGE17 1990 Persons 35 to 44 Years
C90AGE18 1990 Persons 45 to 54 Years
C90AGE19 1990 Persons 55 to 59 Years
C90AGE20 1990 Persons 60 to 61 Years
C90AGE21 1990 Persons 62 to 64 Years
C90AGE22 1990 Persons 65 to 74 Years
C90AGE23 1990 Persons 75 and over Years
C90MALE 1990 Male Population
C90FEMA 1990 Female Population
C90FI1 1990 Family Income less than $ 5,000
C90FI2 1990 Family Income $ 5,000 to $ 9,999
C90FI3 1990 Family Income $ 10,000 to $ 14,999
C90FI4 1990 Family Income $ 15,000 to $ 24,999
C90FI5 1990 Family Income $ 25,000 to $ 49,999
C90FI6 1990 Family Income $ 50,000 and over
C90NCOLL 1990 Persons in no college (nursery, kindergarten, elementary, and high school
C90COLLE 1990 Persons in college
C90EDUC1 1990 Persons less than 12th grade
C90EDUC2 1990 Persons high school graduate
C90EDUC3 1990 Persons college 1 to 3 years (some college, associate degree)
C90EDUC4 1990 Persons collge 4 years or more (bachellors or graduate degree)
C90OCCU1 1990 Professional, technical and kindred workers (prof. and specialty,
tech. and related support)
C90OCCU2 1990 Executive-administrative-managerial (farmers and farm managers, managers,
off. & proprietors)
C90OCCU3 1990 Clerical and kindred workers (administrative support, including clerical)
C90OCCU4 1990 Sales workers
C90OCCU5 1990 Craftsmen, foremen, and kindred workers (precision production-craft repair)
C90OCCU6 1990 Operatives and kindred workers (machine operators-assemblers-inspectors)
C90OCCU7 1990 Service workers including private household (priv. household serv., protective
serv., other serv.)
C90OCCU8 1990 Farm laborers and farm foremen (farming-forestry-fishing)
C90OCCU9 1990 Laborers except farm and mine (transportation and material moving)
C90INDU1 1990 Construction
C90INDU2 1990 Manufacturing of non-durable goods
C90INDU3 1990 Manufacturing of durable goods
C90INDU4 1990 Transportation
C90INDU5 1990 Communications and other public utilities
C90INDU6 1990 Wholesale and retail trade
C90INDU7 1990 Finance, insurance, business, and repair
C90INDU8 1990 Other professional and related services
C90INDU9 1990 Educational services
C90IND10 1990 Public administration
C90IND11 1990 Other industries
C90ABOVE 1990 Above poverty line
C90BELOW 1990 Below poverty line
C90NATIV 1990 Native of native or foreign parents
C90FOREI 1990 Foreign born
C90FHOUS 1990 Family housing
C90GQUAR 1990 Group quarters
C90ALLFA 1990 all families
C90FAWFH 1990 Families with female head
C90M14YR 1990 Male
C90F14YR 1990 Female
C90SHOUS 1990 Same house
C90DHOUS 1990 Different house
C90ABROA 1990 Abroad
C90MLFOR 1990 males in labor force
C90MNLFO 1990 males not in labor force
C90FLFOR 1990 females in labor force
C90FNLFO 1990 females not in labor force
C90INC01 1990 income $ < 5,000
C90INC02 1990 income $5,000-$9,999
C90INC03 1990 income $10,000-$14,999
C90INC04 1990 income $15,000-$24,999
C90INC05 1990 income $25,000-$49,999
C90INC06 1990 income > $50,000
C90FHABO 1990 Above poverty level
C90FHBEL 1990 Below poverty level
C90FABOV 1990 Above poverty level
C90FBELO 1990 Below poverty level
C90OWNER 1990 Owner occupied
C90RENTE 1990 Renter occupied
C90TSTR1 1990 Tenure in 1-unit structure
C90TSTR2 1990 Tenure in 2-unit structure
C90TSTR3 1990 Tenure in 3-4-unit structure
C90TSTR4 1990 Tenure in 5 or more-unit structure
C90TSTR5 1990 Tenure in mobile homes, trailers, others
C90GREN1 1990 Monthly gross rent < $100
C90GREN2 1990 Monthly gross rent $100-$199
C90GREN3 1990 Monthly gross rent $200-$299
C90GREN4 1990 Monthly gross rent > $300
C90GREN5 1990 Monthly gross rent (no cash rent)
C90TELE1 1990 owner occupied, telephone available
C90TELE2 1990 owner occupied, telephone not available
C90TELE3 1990 renter occupied, telephone available
C90TELE4 1990 renter occupied, telephone not available
C90AUTO1 1990 Total occupied-1 automobile
C90AUTO2 1990 Total occupied-2 automobile
C90AUTO3 1990 Total occupied-3 or more automobiles
C90HEAT1 1990 Utility gas
C90HEAT2 1990 Bottle, tank, or LP gas
C90HEAT3 1990 Electricity
C90HEAT4 1990 Others
C90HEAT5 1990 No fuel used
H0250001 1989 to March 1990
H0250002 1985 to 1988
H0250003 1980 to 1984
H0250004 1970 to 1979
H0250005 1960 to 1969
H0250006 1950 to 1959
H0250007 1940 to 1949
H0250008 1939 or earlier
DESCRIPT FGDL added item based on the item C90POPUL
USER NOTES:
The centroids from this dataset are taken from a CD supplied by the U.S. Census Bureau entitled "Spatial Patterns of Socioeconomic Data from 1970 to 2000". The CD was created to provide a source of time-series geo-referenced socioeconmic data. The census data was orginally used by NOAA to incorporate into their Coastal Assessment Framework (CAF). It is important to note that the centroids are accurate for the most part, however, should not be used for small scale studies. The data is designed for regional and state wide research. Certain scale datasets are not suitable for some project, analysis, or modelling 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. 1:250000 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 analyses. 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 web pages at: http://www.geoplan.ufl.edu/education.html These data are based on interpretation of available information and should not be construed as legally binding.
FGDL QUALITY ASSURANCE STATUS:
-Reprojected data to FGDL Albers HPGN (See "Map Projection Parameters" below) -Upcased all character records -DESCRIPT item was added based on the item C90POPUL
DATA LINEAGE SUMMARY:
This data was orginally taken from the U.S. Census Bureau CD entitled "Spatial Patterns of Socioeconomic Data from 1970 to 2000". The data was taken from the CD in text file format. The text file was converted to a dbf and a shapefile was created in ArcMap 8.2 by using the add XY command based on the decimal degree coordinates included in the table. The shapefile was then projected from geographic nad27 to albers hpgn.
MAP PROJECTION PARAMETERS:
Projection ALBERS Units METERS Datum HPGN Spheroid GRS1980 1st standard parallel 24 0 0.000 2nd standard parallel 31 30 0.000 central meridian -84 0 0.000 latitude of projection's origin 24 0 0.000 false easting (meters) 400000.00000 false northing (meters) 0.00000
DATA SOURCES CONTACT(S):
Name: U.S. Bureau of the Census Geographic Division Address: Washington, DC 20233 Phone: 301-457-1056 Web site: CD Contact Person: Geo-Spatial Research and Standards Staff
FGDL CONTACT:
Name: Florida Geographic Data Library
Abbr. Name: FGDL
Address: Florida Geographic Data Library
431 Architecture
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