Census Tracts 2010


Identification_Information:
Citation:
Citation_Information:
Originator:Philadelphia City Planning Commission
Publication_Date:201302
Title:
Census Tracts 2010
Geospatial_Data_Presentation_Form:vector digital data
Online_Linkage: http://www.pasda.psu.edu/
Description:
Abstract:
Census tracts are small, relatively permanent statistical subdivisions of a county delineated by local participants as part of the U.S. Census Bureau's Participant Statistical Areas Program. The U.S. Census Bureau delineated census tracts in situations where no local participant existed or where local or tribal governments declined to participate. The primary purpose of census tracts is to provide a stable set of geographic units for the presentation of decennial census data. Census tracts generally have between 1,500 and 8,000 people, with an optimum size of 4,000 people. Counties with fewer people have a single census tract.) When first delineated, census tracts are designed to be homogeneous with respect to population characteristics, economic status, and living conditions. The spatial size of census tracts varies widely depending on the density of settlement. Census tract boundaries are delineated with the intention of being maintained over many decades so that statistical comparisons can be made from decennial census to decennial census. However, physical changes in street patterns caused by highway construction, new developments, and so forth, may require occasional boundary revisions. In addition, census tracts occasionally are split due to population growth or combined as a result of substantial population decline.Census tracts are identified by a four-digit basic number and may have a two-digit numeric suffix; or example, 6059.02. The decimal point separating the four-digit basic tract number from the two-digit suffix is shown in the printed reports and on census maps. In computer-readable files, the decimal point is implied. Many census tracts do not have a suffix; in such cases, the suffix field is either left blank or is zero-filled. Leading zeros in a census tract number (for example, 002502) are shown only in computer-readable files. Census tract suffixes may range from .01 to .98. For the 1990 census, the .99 suffix was reserved for census tracts/block numbering areas (BNAs) that contained only crews-of-vessels population; for Census 2000, the crews-of-vessels population is part of the related census tract.Census tract numbers range from 1 to 9999 and are unique within a county or statistically equivalent entity. The U.S. Census Bureau reserves the basic census tract numbers 9400 to 9499 for census tracts delineated within or to encompass American Indian reservations and off-reservation trust lands that exist in multiple states or counties. The number 0000 in computer-readable files identifies a census tract delineated to provide complete coverage of water area in territorial seas and the Great Lakes. Projection: Lambert Conformal ConicXY Coordinate System: NAD 1983 StatePlane Pennsylvania South FIPS 3702 (US Feet)Datum: NAD 1983Units of Measurement: Foot_US
Purpose:
For matching and analyzing demographic data collected and compiled by the U.S. Census Bureau & American Community Survey(ACS) to the geography of Census Tract boundaries within the City of Philadelphia. These boundaries can change every ten years when the decennial census is conducted. When joining ACS tables use "LGRECNO" as a common field. Adjusted to City's Standard Boundary Format. - Features updated: 07/22/2012 - Attributes updated: 07/22/2012 - Metadata updated 09/20/2012
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:201302
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:-75.284153
East_Bounding_Coordinate:-74.954039
North_Bounding_Coordinate:40.143797
South_Bounding_Coordinate:39.861734
Keywords:
Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:planning
Theme_Keyword:city planning
Theme_Keyword:PCPC
Theme_Keyword:Philadelphia
Theme_Keyword:City of Philadelphia
Theme_Keyword:2010 Census Tracts
Theme_Keyword:society
Access_Constraints:None
Use_Constraints:
The City of Philadelphia makes no representation about the accuracy of any specific information in this GIS data and is provided “as is” and without Warranty of any kind. The user of this data will assume complete responsibility for any and all occurrences resulting from its use or display and will hold the City of Philadelphia harmless from any and all claims, demands, liabilities, obligations, damages, suits, judgments or settlements, including reasonable costs and attorneys' fees, that arise from use of this data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person:Adityaraj Chavada
Contact_Organization:Philadelphia City Planning Commission
Contact_Address:
Address_Type:mailing and physical address
Address:
1515 Arch Street, 13 Fl
City:Philadelphia
State_or_Province:Pennsylvania
Postal_Code:19102
Country:United States
Contact_Electronic_Mail_Address:adityaraj.chavada@phila.gov
Contact Instructions:
Darshna Patel
(215) 683-4611 
darshna.patel@phila.gov
Data_Set_Credit:
Adityaraj Chavada, GISP
adityaraj.chavada@phila.gov
Philadelphia City Planning Commission
 1515 Arch Street, 13 Fl, Philadelphia, PA  19102
GIS Manager: Darshna Patel (215) 683-4611 and darshna.patel@phila.gov
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcGIS 10.0.4.4000
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method:Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type:GT-polygon composed of chains
Point_and_Vector_Object_Count:384
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name:Lambert Conformal Conic
Lambert_Conformal_Conic:
Lambert Conformal Conic
Standard_Parallel:39.93333333333333
Standard_Parallel:40.96666666666667
Longitude_of_Central_Meridian:-77.75
Latitude_of_Projection_Origin:39.33333333333334
False_Easting:1968500.0
False_Northing:0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method:coordinate pair
Coordinate_Representation:
Abscissa_Resolution:0.000000026907964745248598
Ordinate_Resolution:0.000000026907964745248598
Geodetic_Model:
Horizontal_Datum_Name:D North American 1983
Ellipsoid_Name:GRS 1980
Semi-major_Axis:6378137.0
Denominator_of_Flattening_Ratio:298.257222101
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label:Philadelphia_Census_Tracts_2010
Attribute:
Attribute_Label:FID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label:OBJECTID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label:STATEFP10
Attribute:
Attribute_Label:COUNTYFP10
Attribute:
Attribute_Label:TRACTCE10
Attribute:
Attribute_Label:GEOID10
Attribute:
Attribute_Label:NAME10
Attribute:
Attribute_Label:NAMELSAD10
Attribute:
Attribute_Label:MTFCC10
Attribute:
Attribute_Label:FUNCSTAT10
Attribute:
Attribute_Label:ALAND10
Attribute:
Attribute_Label:AWATER10
Attribute:
Attribute_Label:INTPTLAT10
Attribute:
Attribute_Label:INTPTLON10
Attribute:
Attribute_Label:LOGRECNO
Attribute:
Attribute_Label:SHAPE
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label:SHAPE_AREA
Attribute_Definition:
Area of feature in internal units squared.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Positive real numbers that are automatically generated.
Attribute:
Attribute_Label:SHAPE_LEN
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Address:
Address_Type:mailing and physical address
Address:
115 Land and Water building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 - 8792
Contact_Electronic_Mail_Address:pasda@psu.edu
Distribution_Liability:
The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.
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Metadata_Reference_Information:
Metadata_Date:201302
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Address:
Address_Type:mailing and physical address
Address:
115 Land and Water building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 - 8792
Contact_Electronic_Mail_Address:pasda@psu.edu
Metadata_Standard_Name:FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version:FGDC-STD-001-1998
Metadata_Time_Convention:local time
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