Zipcode Polygons

• Identification_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Title:

Zipcode Polygons

Geospatial_Data_Presentation_Form:vector digital data

Description:

Abstract:

AbstractZip code boundaries expressed as a polygon feature class for the City of Philadelphia.Data DevelopmentSeveral data sets and sources were used to create the most accurate representation of the zip code boundaries. Starting with a previous iteration of zip code border data, existing borders were compared to data from the US Census Bureau (Zip Code Tabulation Areas). This data was then reconciled with current Zip code information from the United States Postal Service (the authority on zip codes) to get the most current data possible. Several borders were modified to account for changes or cartographic considerations.Key Attribute Field Names and DescriptionsCODE: Zip code for each polygon.Coordinate SystemLambert Conformal Conic, NAD83, PA South Stateplane coordinates, US Foot.Thematic MappingUse the CODE field for thematic mapping and labeling.Other InformationZip Code Tabulation Areas were developed by the US Census Bureau to overcome difficulties in precisely defining the land area covered by each Zip Code. The ZCTAs are generalized area representation of the USPS Zip code service areas, but are not the same as Zip codes. There is no correlation between ZIP codes and Census Bureau geography. In addition, the USPS frequently realigns, merges or splits ZIP codes to meet changing needs. ZCTAs are constructed by aggregating the Census 2000 blocks whose addresses use a given ZIP code. The census bureau took the ZIP code used by the majority of addresses in each census unit at the time the data was compiled. As a result, some addresses end up with a ZCTA code that is different from their ZIP code.

Purpose:

The purpose of this dataset is to represent the Zip Code areas for the City of Philadelphia. The edges of Zip Codes are slightly modified for logical and cartographic purposes. This polygon layer has an accompanying arc layer. Certain arcs in the arc layer contain data signifying information relating it to the polygon layer. It can tell you if both sides of the arc belong to one of the bounding polygons. All the arcs, including those with no boundary info, have naming attributes for labeling the polygon borders. Contact the Streets GIS unit for public consumption of the corresponding arc layer. Features updated: 10/5/2012 Attributes updated: 10/5/2012 Metadata updated: 6/5/2015 Update Frequency: As needed Public = Y NOTE: This layer is used by a ULRS Service Area. Do not remove without permission from OIT.

Status:

Maintenance_and_Update_Frequency:Annually

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate:-75.284151

East_Bounding_Coordinate:-74.954039

North_Bounding_Coordinate:40.143797

South_Bounding_Coordinate:39.861734

Keywords:

Access_Constraints:None

Use_Constraints:

<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>The City of Philadelphia reserves all rights in the GIS database and any data contained therein, and the end user’s use of the data does not constitute a transfer of, nor does the end user receive, any title or interest in the database or any other City data. 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.</SPAN></SPAN></P><P STYLE="margin:0 0 14 0;"><SPAN /></P><P><SPAN /></P></DIV></DIV></DIV>

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person:Philadelphia City Planning Commission

Data_Set_Credit:

Streets Department GIS Unit
Office of Innovation and Technology
City of Philadelphia
MSB - 1401 JFK Blvd
Suite 880
Philadelphia, PA 19102
       
Contact:  Max Steinbrenner 215-686-5093, max.steinbrenner@phila.gov

Native_Data_Set_Environment:

Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.0.2414

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:48

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name:NAD 1983 StatePlane Pennsylvania South FIPS 3702 Feet

Lambert_Conformal_Conic:

NAD 1983 StatePlane Pennsylvania South FIPS 3702 Feet

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

Planar_Distance_Units:Foot_US

Geodetic_Model:

Horizontal_Datum_Name:D North American 1983

Ellipsoid_Name:GRS 1980

Semi-major_Axis:6378137.0

Denominator_of_Flattening_Ratio:298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label:Zipcodes_Poly

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:SHAPE

Attribute_Definition:

Feature geometry.

Attribute_Definition_Source:

ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Coordinates defining the features.

Attribute:

Attribute_Label:CODE

Attribute:

Attribute_Label:COD

Attribute:

Attribute_Label:SHAPE_Leng

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.

Metadata_Reference_Information:

Metadata_Date:20160525

Metadata_Standard_Name:FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version:FGDC-STD-001-1998