U.S. Department of Commerce, U.S. Census Bureau, Geography Division
2010
NHGIS: TIGER/Line Shapefile, 2010, 2010 state, Alabama, 2010 Census Block Group State-based
2010
vector digital data
http://www.nhgis.org
Minnesota Population Center
The NHGIS is a National Institutes of Health and National Science Foundation-sponsored project to create a digital spatial-temporal database of all available historical US aggregate census materials. The available shapefiles on the NHGIS site represent version 2.0 of historical US state/territory boundary files for the 1790 to 2010 decennial censuses and American Community Survey releases.
The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. Block Groups (BGs) are defined before tabulation block delineation and numbering, but are clusters of blocks within the same census tract that have the same first digit of their 4-digit census block number from the same decennial census. For example, Census 2000 tabulation blocks 3001, 3002, 3003,.., 3999 within Census 2000 tract 1210.02 are also within BG 3 within that census tract. Census 2000 BGs generally contained between 600 and 3,000 people, with an optimum size of 1,500 people. Most BGs were delineated by local participants in the Census Bureau's Participant Statistical Areas Program (PSAP). The Census Bureau delineated BGs only where the PSAP participant declined to delineate BGs or where the Census Bureau could not identify any local PSAP participant. A BG usually covers a contiguous area. Each census tract contains at least one BG, and BGs are uniquely numbered within census tract. Within the standard census geographic hierarchy, BGs never cross county or census tract boundaries, but may cross the boundaries of other geographic entities like county subdivisions, places, urban areas, voting districts, congressional districts, and American Indian / Alaska Native / Native Hawaiian areas. BGs have a valid code range of 0 through 9. BGs coded 0 were intended to only include water area, no land area, and they are generally in territorial seas, coastal water, and Great Lakes water areas. For Census 2000, rather than extending a census tract boundary into the Great Lakes or out to the U.S. nautical three-mile limit, the Census Bureau delineated some census tract boundaries along the shoreline or just offshore. The Census Bureau assigned a default census tract number of 0 and BG of 0 to these offshore, water-only areas not included in regularly numbered census tract areas.
These data are based upon work supported by the National Institutes of Health and the National Science Foundation. Its purpose is twofold. First, the NHGIS created and freely distributes a database incorporating all available aggregate census information for the United States between 1790 and 2010. The database contains information for a wide variety of statistical (blocks, block groups, census tracts, metropolitan statistical areas, etc.) and administrative units (places, minor civil divisions, counties, states, etc.). Second, the NHGIS produced and freely distributes boundary files for small areas (census tracts and counties) in the United States. Boundary files for tracts are available for the 1910-2010 decennial censuses and American Community Survey releases, and boundary files for counties and states/territories are available for the 1790-2010 decennial censuses and American Community Survey releases. The boundaries contained in this file do not necessarily represent current legal boundaries. Instead, they represent the boundaries over which the U.S. Census Bureau tabulated and published data at that time.
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.
Alabama(01)
201001
201007
publication date
TIGER/Line Shapefiles are extracted from the Census MAF/TIGER database. No changes or updates will be made to this version of the TIGER/Line Shapefiles. Future releases of TIGER/Line Shapefiles will reflect updates made to the Census MAF/TIGER database.
-88.473227
-84.888246
35.008028
30.144425
ISO 19115 Topic Categories
boundaries
None
State or equivalent entity
Polygon
Block Group
BG
INCITS.38-200x (R2004),INCITS.31-200x (R2007),INCITS.454-200x,INCITS 455-200x,INCITS 446-2008
United States
U.S.
State or Equivalent Entity
Alabama
AL
01
None
This dataset was produced with an intended application at the state/territory, regional or national level. Appropriate uses include thematic mapping of census data and spatial analysis of census data. These unaltered data may be redistributed by a third party. If these data are altered or incorporated into another dataset, they are not to be redistributed without also: altering the name of the dataset, including a Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998) compliant metadata file that describes the dataset and reflects the alteration steps that makes the new dataset different from this one, and citing this dataset in the metadata as a source for the altered dataset using the source citation specified below. If these digital data are used in the production of a report or in the compilation of a standalone printed map, then this dataset is to be cited in the report or on the map using the source citation specified below. The following source citation should be used when citing this dataset: Minnesota Population Center. National Historical Geographic Information System: Version 2.0, Minneapolis: MN, University of Minnesota 2011. No fee may be charged for use or distribution. Publications and research reports based on the database must cite it appropriately. Users are requested to send a copy of any publications, research reports, or educational material making use of the data or documentation. Printed matter should be sent to: NHGIS Minnesota Population Center University of Minnesota 50 Willey Hall 225 19th Avenue South Minneapolis, MN 55455.
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.
Yes, the data are free from Title 13 restrictions
Minnesota Population Center
mailing address
Minneapolis
MN
55455
United States
50 Willey Hall
225 19th Ave S
612-625-7375
nhgis@umn.edu
8859part1
eng
Accurate against Federal Information Processing Standards (FIPS), FIPS Publication 6-4, and FIPS-55 at the 100% level for the codes and base names. The remaining attribute information has been examined but has not been fully tested for accuracy.
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.
U.S. Department of Commerce, U.S. Census Bureau, Geography Division
Unpublished material
Census MAF/TIGER database
online
201001
201007
publication date
MAF/TIGER
The selected geographic and cartographic information (line segments) are derived from the U.S. Census Bureau's Master Address File Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) database.
TIGER/Line Shapefiles are extracted from the Census MAF/TIGER database by nation, state, county, and entity. Census MAF/TIGER data for all of the aforementioned geographic entities are then distributed among the shapefiles each containing attributes for line, polygon, or landmark geographic data.
withheld
2010
Dataset Copied.
Erased coastal water features. Added and calculated GISJOIN.
Corrected coastal water features on 12-19-2013 in a number of states. Re-erased coastal water feature using corrected water layer. Correction only affected the geometry of existing features; no features were removed in this process.
Federal Information Processing Standards (FIPS), ANSI, and feature names.
Vector
Simple
FALSE
0
FALSE
FALSE
North American Datum of 1983 in the 48 contiguous states, the District of Columbia, Alaska, Hawaii, Puerto Rico, the Virgin Islands of the United States, and the Pacific Island Areas.
Geodetic Reference System 80
6378137
298257
BG10.shp
2010 Census Block Group State-based
U.S. Census Bureau
Feature Class
0
FID
FID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
STATEFP10
2010 Census state Federal Information Processing Standards
(FIPS) codes
U.S. Census Bureau
INCITS.38-200x (R2004), Codes for the Identification of
the States, the District of Columbia, Puerto Rico, and the
Insular Areas of the United States (Formerly FIPS 5-2)
U.S. Census Bureau
STATEFP10
String
2
0
0
COUNTYFP10
2010 Census county Federal Information Processing Standards
(FIPS) code
U.S. Census Bureau
INCITS.31-200x (R2007), Codes for the Identification of
the Counties and Equivalent Areas of the United States,
Puerto Rico, and the Insular Areas of the United States
(Formerly FIPS 6-4)
U.S. Census Bureau
COUNTYFP10
String
3
0
0
TRACTCE10
2010 Census census tract code
U.S. Census Bureau
000000
Water tract in some coastal and Great Lakes water and
territorial sea
U.S. Census
000100 to 998999
Census tract number
U.S. Census Bureau
TRACTCE10
String
6
0
0
BLKGRPCE10
2010 Census block group number
U.S. Census Bureau
0
Water block group
U.S. Census Bureau
1 to 9
Census 2000 block group code
U.S. Census Bureau
BLKGRPCE10
String
1
0
0
GEOID10
Census block group identifier; a concatenation of 2010 Census
state Federal Information Processing Standards (FIPS) code,
county FIPS code, census tract code, and block group number
U.S. Census Bureau
INCITS.38-200x (R2004), Codes for the Identification of
the States, the District of Columbia, Puerto Rico, and the
Insular Areas of the United States (Formerly FIPS 5-2),
INCITS.31-200x (R2007), Codes for the Identification of
the Counties and Equivalent Areas of the United States,
Puerto Rico, and the Insular Areas of the United States
(Formerly FIPS 6-4) and the tract code that appears in
TRACTCE10 and the census block group number that appears
in BLKGRPCE10
U.S. Census Bureau
GEOID10
String
12
0
0
NAMELSAD10
2010 Census translated legal/statistical area description and
the block group number
U.S. Census Bureau
Refer to the block group number that appears in BLKGRPCE00 and
translated legal/statistical area description code BG, Block
Group
NAMELSAD10
String
13
0
0
MTFCC10
MAF/TIGER feature class code
U.S. Census Bureau
G5030
Block Group
U.S. Census Bureau
MTFCC10
String
5
0
0
FUNCSTAT10
2010 Census functional status
U.S. Census Bureau
S
Statistical entity
U.S. Census Bureau
FUNCSTAT10
String
1
0
0
ALAND10
2010 Census land area (square meters)
U.S. Census Bureau
0 to 9,999,999,999,999
Blank
U.S. Census Bureau
ALAND10
Double
19
0
0
AWATER10
2010 Census water area (square meters)
U.S. Census Bureau
0 to 9,999,999,999,999
Blank
U.S. Census Bureau
AWATER10
Double
19
0
0
INTPTLAT10
2010 Census latitude of the internal point
U.S. Census Bureau
00
Blank
U.S. Census Bureau
INTPTLAT10
String
11
0
0
INTPTLON10
2010 Census longitude of the internal point
U.S. Census Bureau
00
Blank
U.S. Census Bureau
INTPTLON10
String
12
0
0
GISJOIN
GISJOIN
String
15
0
0
unique identifier for joining to NHGIS tabular data
NHGIS
GISJOIN_1
GISJOIN_1
String
254
0
0
YEAR
YEAR
Integer
10
10
0
STUSAB
STUSAB
String
254
0
0
REGIONA
REGIONA
Integer
10
10
0
DIVISIONA
DIVISIONA
Integer
10
10
0
STATE
STATE
String
254
0
0
STATEA
STATEA
Integer
10
10
0
COUNTY
COUNTY
String
254
0
0
COUNTYA
COUNTYA
Integer
10
10
0
TRACTA
TRACTA
Integer
10
10
0
BLKGRPA
BLKGRPA
Integer
10
10
0
CBSA
CBSA
Integer
10
10
0
METDIV
METDIV
Integer
10
10
0
CSAA
CSAA
Integer
10
10
0
AREALAND
AREALAND
Integer
10
10
0
AREAWATER
AREAWATER
Integer
10
10
0
NAME
NAME
String
254
0
0
INTPTLAT
INTPTLAT
Double
19
0
0
INTPTLON
INTPTLON
Double
19
0
0
LSADC
LSADC
String
254
0
0
TOTAL
TOTAL
Integer
10
10
0
OCCUPIED
OCCUPIED
Integer
10
10
0
VACANT
VACANT
Integer
10
10
0
Shape_Leng
Shape_Leng
Double
19
0
0
Shape_area
Shape_Area
Double
19
0
0
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
Minnesota Population Center
mailing address
50 Willey Hall
Minneapolis
MN
55455
United States
225 19th Ave S
612-625-7375
nhgis@umn.edu
No warranty, expressed or implied is made with regard to the accuracy of these data, and no liability is assumed by the U.S. Government in general or the U.S. Census Bureau in specific as to the spatial or attribute accuracy of the data. The act of distribution shall not constitute any such warranty and no responsibility is assumed by the U.S. government in the use of these files. The boundary information in the TIGER/Line Shapefiles is for statistical data collection and tabulation purposes only; their depiction and designation for statistical purposes do not constitute a determination of jurisdictional authority or rights of ownership or entitlement and they are not legal land descriptions.
TGRSHP (compressed)
PK-ZIP, version 1.93 A or higher
http://www.census.gov/geo/www/tiger
DVD-ROM (Only if offered offline)
ISO 9660
NHGIS files may be accessed without charge.
The TIGER/Line shapefiles contain geographic data only and do not include display mapping software or statistical data. For information on how to use the TIGER/Line shapefile data with specific software package users shall contact the company that produced the software.
20100507
Minnesota Population Center
mailing address
50 Willey Hall
Minneapolis
MN
55455
United States
225 19th Ave S
612-625-7375
nhgis@umn.edu
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
8859part1
tl_2010_01_bg10.shp.xml
eng
Esri ArcGIS 13.3.0.52636
HighPoint2010HousingUnits_BlkGrps
1
-180.000000
180.000000
90.000000
0.096502
HighPoint2010HousingUnits_BlkGrps
002
0.000
-7115207.647388
3321631.715612
-1685018.477739
4591848.410704
1
Projected
GCS_North_American_1983
Linear Unit: Meter (1.000000)
<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.3.0'><WKT>PROJCS["USA_Contiguous_Albers_Equal_Area_Conic",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-96.0],PARAMETER["Standard_Parallel_1",29.5],PARAMETER["Standard_Parallel_2",45.5],PARAMETER["Latitude_Of_Origin",37.5],UNIT["Meter",1.0],AUTHORITY["Esri",102003]]</WKT><XOrigin>-16901100</XOrigin><YOrigin>-8579000</YOrigin><XYScale>266467840.99085236</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102003</WKID><LatestWKID>102003</LatestWKID></ProjectedCoordinateSystem>
USA_Contiguous_Albers_Equal_Area_Conic
20250331
14524200
20250331
14524200
20130502
08462200
1.0
FALSE
FGDC CSDGM Metadata
Shapefile
0.000
dataset
Esri
4.0.0
0
20250331