202407011222060020111220175241002022121214050400FALSEFALSEZip_codes_new003ProjectedGCS_North_American_1983Linear Unit: Foot_US (0.304801)NAD_1983_StatePlane_California_V_FIPS_0405_Feet<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/10.1'><WKT>PROJCS["NAD_1983_StatePlane_California_V_FIPS_0405_Feet",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["Lambert_Conformal_Conic"],PARAMETER["False_Easting",6561666.666666666],PARAMETER["False_Northing",1640416.666666667],PARAMETER["Central_Meridian",-118.0],PARAMETER["Standard_Parallel_1",34.03333333333333],PARAMETER["Standard_Parallel_2",35.46666666666667],PARAMETER["Latitude_Of_Origin",33.5],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",2229]]</WKT><XOrigin>-117608900</XOrigin><YOrigin>-91881400</YOrigin><XYScale>3048.0060960121928</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.0032808333333333331</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102645</WKID><LatestWKID>2229</LatestWKID></ProjectedCoordinateSystem>1.0500005000FGDCESRI ArcCatalog 8.1.3.679enCalifornia ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a five-digit ZIP Code divides the country into 10 large groups of states numbered from 0 in the Northeast to 9 in the far West. Within these areas, each state is divided into an average of 10 smaller geographical areas, identified by the 2nd and 3rd digits. These digits, in conjunction with the first digit, represent a sectional center facility or a mail processing facility area. The 4th and 5th digits identify a post office, station, branch or local delivery area.California ZIP Code Areas provides area, post office name, and population for each ZIP Code area in California.Largest scale when displaying the data: 1:100,000.Geographic Data Technology, Inc. (GDT)20020401California ZIP Code Areascazipvector digital data2002ESRI Data & Maps2002Redlands, California, USAEnvironmental Systems Research Institute, Inc. (ESRI)Location: ESRI Data & Maps 2002 (CD 4) \westusa\caEnvironmental Systems Research Institute, Inc. (ESRI)ground condition: 200111, 2000; publication date: 2001Matches software update releases-124.407325-114.13177242.00934232.534152-124.407325-114.13177232.53415242.009342Nonepolygonzip codesareasfive-digit zip codespost officespopulationlocationsocietyUnited StatesCaliforniaNone200120002001NoneAccess granted to Licensee only.The data are provided by multiple, third party data vendors under license to ESRI for inclusion on ESRI Data & Maps CD–ROMs for use with ESRI® software. Each data vendor has its own data licensing policies and may grant varying redistribution rights to end users. Please consult the redistribution rights below for this data set provided on ESRI Data & Maps CD–ROMs. As used herein, “Geodata” shall mean any digital data set consisting of geographic data coordinates and associated attributes.
The redistribution rights for this data set: Redistribution rights are granted by the data vendor for hard-copy renditions or static, electronic map images (e.g. .gif, .jpeg, etc.) that are plotted, printed, or publicly displayed with proper metadata and source/copyright attribution to the respective data vendor(s). Geodata is redistributable with a Value-Added Software Application developed by ESRI Business Partners on a royalty-free basis with proper metadata and source/copyright attribution to the respective data vendor(s).
[Applicable to Pop2001 attribute only]–In addition to the redistribution rights above, geodata is redistributable without a Value-Added Software Application (i.e., adding the sample data to an existing, [non]commercial data set for redistribution) with proper metadata and source/copyright attribution to the respective data vendor(s).
The terms and conditions below apply to all the data sets provided on the ESRI Data & Maps CD–ROMs.
Proprietary Rights and Copyright: Licensee acknowledges that the Data and Related Materials contain proprietary and confidential property of ESRI and its licensor(s). The Data and Related Materials are owned by ESRI and its licensor(s) and are protected by United States copyright laws and applicable international copyright treaties and/or conventions.
Limited Warranty and Disclaimer: ESRI warrants that the media upon which the Data and Related Materials are provided will be free from defects in materials and workmanship under normal use and service for a period of ninety (90) days from the date of receipt.
THE DATA AND RELATED MATERIALS ARE EXCLUDED FROM THE LIMITED WARRANTY, AND THE LICENSEE EXPRESSLY ACKNOWLEDGES THAT THE DATA CONTAINS SOME NONCONFORMITIES, DEFECTS, OR ERRORS. ESRI DOES NOT WARRANT THAT THE DATA WILL MEET LICENSEE'S NEEDS OR EXPECTATIONS; THAT THE USE OF THE DATA WILL BE UNINTERRUPTED; OR THAT ALL NONCONFORMITIES, DEFECTS, OR ERRORS CAN OR WILL BE CORRECTED. ESRI IS NOT INVITING RELIANCE ON THIS DATA, AND THE LICENSEE SHOULD ALWAYS VERIFY ACTUAL DATA.
EXCEPT FOR THE LIMITED WARRANTY SET FORTH ABOVE, THE DATA AND RELATED MATERIALS CONTAINED THEREIN ARE PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedy and Limitation of Liability: The entire liability of ESRI or its licensor(s) and Licensee's exclusive remedy shall be to terminate the Agreement upon Licensee returning the Data and Related Materials to ESRI with a copy of Licensee's invoice/receipt and ESRI returning the license fees paid to Licensee.
IN NO EVENT SHALL ESRI AND/OR ITS LICENSOR(S) BE LIABLE FOR COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOST PROFITS, LOST SALES, OR BUSINESS EXPENDITURES, INVESTMENTS, OR COMMITMENTS IN CONNECTION WITH ANY BUSINESS; LOSS OF ANY GOODWILL; OR FOR ANY INDIRECT, SPECIAL, INCIDENTAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT OR USE OF THE DATA AND RELATED MATERIALS, HOWEVER CAUSED, ON ANY THEORY OF LIABILITY, AND WHETHER OR NOT ESRI OR ITS LICENSOR(S) HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THESE LIMITATIONS SHALL APPLY NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF ANY EXCLUSIVE REMEDY.
Third Party Beneficiary: ESRI's licensor(s) has (have) authorized ESRI to (sub)distribute and (sub)license its (their) data as incorporated into the Data and Related Materials. As an intended third party beneficiary to this Agreement, the ESRI licensor(s) is (are) entitled to directly enforce, in its own name, the rights and obligations undertaken by the Licensee and to seek all legal and equitable remedies as are afforded to ESRI.
In the event that the data vendor(s) has (have) granted the end user permission to redistribute the Geodata, please use proper proprietary or copyright attribution for the various data vendor(s), and provide the associated metadata file(s) with the Geodata. In compliance with FGDC metadata standards, ESRI has attempted to practice proper metadata methodologies by providing any data source information, descriptions, and file names to assist in this effort.ShapefileEnvironmental Systems Research Institute, Inc. (ESRI)Data Teammailing and physical address
380 New York Street
RedlandsCalifornia92373-8100USA909-793-2853909-793-5953info@esri.com8:00 a.m.–5:30 p.m. Pacific time, Monday–FridayIn the United States–
Please direct all inquiries regarding software/data pricing and consulting services to your local ESRI Regional Office. For support, you may contact Technical Support by telephone (voice) between 6:00 a.m. and 6:00 p.m. Pacific time, Monday through Friday, by dialing 909-793-3774; facsimile (fax) available at 909-792-0960; electronic mail (e-mail) support@esri.com; or visit http://support.esri.com; ESRI holidays excluded. Outside the United States–
Please direct all inquiries regarding software/data pricing, sales, support, and consulting services to your local ESRI International Distributor. This information can be found at http://gis.esri.com/intldist/contactint.cfm. For other questions or comments, you may contact ESRI headquarters by e-mail, telephone, or fax or write to us.United States Postal ServiceenFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local timeData TeamEnvironmental Systems Research Institute, Inc. (ESRI)mailing and physical addressRedlandsCalifornia92373-8100
380 New York Street
USA909-793-2853909-793-5953info@esri.com8:00 a.m.–5:30 p.m. Pacific time, Monday–Friday20020218VectorSimpleFALSE0TRUEFALSEGCS_North_American_1983North American Datum of 1983Geodetic Reference System 806378137.000000298.257222Zip_codes_newFeature Class0The polygons identify areas where mail is delivered (from a city block or two to a whole rural town) within California.Geographic Data Technology, Inc.OBJECTIDOBJECTIDOID4100Internal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeShapeGeometry400Feature geometry.ESRICoordinates defining the features.ZIPZIPString5The five-digit number used by the postal service to identify an area where mail is delivered.United States Postal ServiceUSPS National 5-Digit ZIP and Post Office DirectoryUnited States Postal Service00PO_NAMEPO_NAMEString28The post office name.United States Postal ServiceUSPS National 5-Digit ZIP and Post Office DirectoryUnited States Postal Service00toaks_sde.TOAKS_DATA_LOADER.Zip_codes_new.AREAtoaks_sde.TOAKS_DATA_LOADER.Zip_codes_new.AREADouble8215STATESTATEString2The two-letter abbreviation for the state in which the ZIP Code area is located.United States Postal ServiceUSPS City/State FileUnited States Postal Service00SUMBLKPOPSUMBLKPOPInteger4The sum of the 2000 population for the Census Bureau Block polygon centroids which fall within the zip code area.ESRI; Department of Commerce, Census BureauSummed populations for the features.100POP2001POP2001Double8The 2001 estimated population of the ZIP Code area.ESRI Business Information SolutionsPopulations for the features.100Shape.areaShape.areaDouble000Shape.lenShape.lenDouble0002.6732.673SHPno compression appliedThe SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBASE format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml (optional).ESRI Data & Maps 2002 CD–ROM Set is available only as part of ESRI® software.650MB (megabytes)ISO 9660Software purchase priceEnvironmental Systems Research Institute, Inc. (ESRI); ESRI International DistributorsIn the United States, contact the ESRI Telesales staff at 800-447-9778 for more information about our software and data.
Outside the United States, please direct all inquiries to your local ESRI International Distributor. This information can be found at http://gis.esri.com/intldist/contactint.cfm.mailing and physical address
380 New York Street
RedlandsCalifornia92373-8100USA800-447-9778To use this data requires software that supports ArcView® GIS shapefiles.See use constraints.Offline DataDynamap/ZIP Code Boundary & Inventory Files v10.0Geographic Data Technology, Inc.200201Version 10.0vector digital dataDynamap®/ZIP Code Boundary & Inventory Filesv10.0Geographic Data Technology, IncLebanon, New Hampshire, USA100000CD–ROM200111ground conditionGDT Dynamap/ZIP Code Boundary & Inventory Files v10.0Attribute and geospatial dataHow GDT Creates These Files: Creating ZIP Code Areas is a technical process that carefully coordinates United States Postal Service (USPS) postal data and our own Dynamap street data. The U.S. Post Office assigns ZIP Codes on a street-by-street basis. ZIP code areas are used by the USPS to deliver mail more effectively. Their purpose was never intended to form boundaries for spatial analysis. As a result, GDT formed the following processes to build boundaries from the mail stops present on street segments. By utilizing a wide variety of sources, GDT is able to locate ZIP code changes both large and small and change the representation of ZIP Code areas by redefining the boundaries.
Aligning ZIP Code Zones & Street Segments: The ZIP boundaries are created manually by following actual Dynamap street segments and other non-street features. In areas where the street name match rate is low, GDT technicians make telephone inquiries to area Post Offices, and refer to USPS ZIP+4 State Directories, to determine the predominant ZIP Code. The ZIP Code delivery "zone" is approximated, and ZIP boundaries are created manually by following Dynamap street and non-street segments.
U.S. ZIP Code Areas have been generalized to 1,000 points per polygon and 4,000 points per feature.ArcView GIS 3.xwithheld200201The following steps were performed by ESRI for Data & Maps 2002: Extracted state ZIP Code geography from GDT Dynamap/ZIP Code Boundary & Inventory Files. Converted Hawaii to North American Datum of 1983 (NAD83). Appended the states into one national data set. Added Pop2001 attribute from ESRI Business Information Solutions. Added Area attribute and recalculated Sumblkpop attribute by summing Census Block centroids defined by the Census Bureau from the Public Law 94-171 population files that fall within each ZIP Code area. Removed unnecessary attributes and reformatted all attributes. Divided into individual states. Created ArcView legend file (.avl), ArcGIS™ layer file (.lyr) file, projection file (.prj), and spatial indices.ArcView GIS 3.xwithheldwithheld20020210withheldDepartment of Commerce, Census Bureau20002000 Census of Population and Housing Public Law 94-171Department of Commerce, Census BureauUSA2000Census of Population and Housing Public Law 94-1712000CD–ROM2000ground conditionCensus 94-171Attribute dataelectronic mail systemESRI BISAttribute dataTotpop_cy (attribute)ESRI Business Information Solutions2001ESRI Business Information SolutionsVienna, Virginia, USA2001publication dateDataset copied.20020809The geospatial part of this data set was extracted from the 2000 Census Version TIGER/Line™ files (CD–ROM edition). To improve the accuracy, GDT ran a process against the entire nationwide database. It was generalized to 1,000 points per polygon and 4,000 points per feature. Generalizing reduced the positional accuracy and can't be determined.
The positional accuracy of the TIGER/Line coordinates varies with the source materials used but at best meets the established National Map Accuracy standards (+/- 167 feet approximately) where 1:100,000-scale maps from the USGS are the source. The Census Bureau cannot specify the accuracy of feature updates added by its field staff or of features derived from the GBF/DIME-Files or other map sources. Thus, the level of positional accuracy in the TIGER/Line files is not suitable for high-precision measurement applications such as engineering problems, property transfers, or other uses that might require highly accurate measurements of the earth's surface.No duplicate features are present.After processing, the data set is checked for drawing display and number of records and file sizes compared with source materials.Data TeamEnvironmental Systems Research Institute, Inc. (ESRI)909-793-2853909-793-5953380 New York StreetRedlandsCalifornia92373-8100USinfo@esri.com8:00 a.m.–5:30 p.m. Pacific time, Monday–Friday20221212ArcGIS Metadata1.0Environmental Systems Research Institute, Inc. (ESRI); ESRI International Distributors800-447-9778380 New York StreetRedlandsCalifornia92373-8100USIn the United States, contact the ESRI Telesales staff at 800-447-9778 for more information about our software and data.
Outside the United States, please direct all inquiries to your local ESRI International Distributor. This information can be found at http://gis.esri.com/intldist/contactint.cfm.Software purchase priceSHPThe SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBASE format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml (optional).no compression appliedTo use this data requires software that supports ArcView® GIS shapefiles.2.673650MB (megabytes)California ZIP Code Areas2002-04-012002Geographic Data Technology, Inc. (GDT)Environmental Systems Research Institute, Inc. (ESRI)Environmental Systems Research Institute, Inc. (ESRI)Redlands, California, USAvector digital dataESRI Data & Maps2002Location: ESRI Data & Maps 2002 (CD 4) \westusa\ca<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>California ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a five-digit ZIP Code divides the country into 10 large groups of states numbered from 0 in the Northeast to 9 in the far West. Within these areas, each state is divided into an average of 10 smaller geographical areas, identified by the 2nd and 3rd digits. These digits, in conjunction with the first digit, represent a sectional center facility or a mail processing facility area. The 4th and 5th digits identify a post office, station, branch or local delivery area.</SPAN></P></DIV></DIV></DIV>California ZIP Code Areas provides area, post office name, and population for each ZIP Code area in California.United States Postal ServiceData TeamEnvironmental Systems Research Institute, Inc. (ESRI)909-793-2853909-793-5953380 New York StreetRedlandsCalifornia92373-8100USinfo@esri.com8:00 a.m.–5:30 p.m. Pacific time, Monday–FridayIn the United States–
Please direct all inquiries regarding software/data pricing and consulting services to your local ESRI Regional Office. For support, you may contact Technical Support by telephone (voice) between 6:00 a.m. and 6:00 p.m. Pacific time, Monday through Friday, by dialing 909-793-3774; facsimile (fax) available at 909-792-0960; electronic mail (e-mail) support@esri.com; or visit http://support.esri.com; ESRI holidays excluded. Outside the United States–
Please direct all inquiries regarding software/data pricing, sales, support, and consulting services to your local ESRI International Distributor. This information can be found at http://gis.esri.com/intldist/contactint.cfm. For other questions or comments, you may contact ESRI headquarters by e-mail, telephone, or fax or write to us.United StatesCalifornia200120002001polygonzip codesareasfive-digit zip codespost officespopulationlocationsocietypolygonzip codesareasfive-digit zip codespost officespopulationlocationsocietyUnited StatesCalifornia200120002001<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The data are provided by multiple, third party data vendors under license to ESRI for inclusion on ESRI Data & Maps CD–ROMs for use with ESRI® software. Each data vendor has its own data licensing policies and may grant varying redistribution rights to end users. Please consult the redistribution rights below for this data set provided on ESRI Data & Maps CD–ROMs. As used herein, “Geodata” shall mean any digital data set consisting of geographic data coordinates and associated attributes. The redistribution rights for this data set: Redistribution rights are granted by the data vendor for hard-copy renditions or static, electronic map images (e.g. .gif, .jpeg, etc.) that are plotted, printed, or publicly displayed with proper metadata and source/copyright attribution to the respective data vendor(s). Geodata is redistributable with a Value-Added Software Application developed by ESRI Business Partners on a royalty-free basis with proper metadata and source/copyright attribution to the respective data vendor(s). [Applicable to Pop2001 attribute only]–In addition to the redistribution rights above, geodata is redistributable without a Value-Added Software Application (i.e., adding the sample data to an existing, [non]commercial data set for redistribution) with proper metadata and source/copyright attribution to the respective data vendor(s). The terms and conditions below apply to all the data sets provided on the ESRI Data & Maps CD–ROMs. Proprietary Rights and Copyright: Licensee acknowledges that the Data and Related Materials contain proprietary and confidential property of ESRI and its licensor(s). The Data and Related Materials are owned by ESRI and its licensor(s) and are protected by United States copyright laws and applicable international copyright treaties and/or conventions. Limited Warranty and Disclaimer: ESRI warrants that the media upon which the Data and Related Materials are provided will be free from defects in materials and workmanship under normal use and service for a period of ninety (90) days from the date of receipt. THE DATA AND RELATED MATERIALS ARE EXCLUDED FROM THE LIMITED WARRANTY, AND THE LICENSEE EXPRESSLY ACKNOWLEDGES THAT THE DATA CONTAINS SOME NONCONFORMITIES, DEFECTS, OR ERRORS. ESRI DOES NOT WARRANT THAT THE DATA WILL MEET LICENSEE'S NEEDS OR EXPECTATIONS; THAT THE USE OF THE DATA WILL BE UNINTERRUPTED; OR THAT ALL NONCONFORMITIES, DEFECTS, OR ERRORS CAN OR WILL BE CORRECTED. ESRI IS NOT INVITING RELIANCE ON THIS DATA, AND THE LICENSEE SHOULD ALWAYS VERIFY ACTUAL DATA. EXCEPT FOR THE LIMITED WARRANTY SET FORTH ABOVE, THE DATA AND RELATED MATERIALS CONTAINED THEREIN ARE PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Exclusive Remedy and Limitation of Liability: The entire liability of ESRI or its licensor(s) and Licensee's exclusive remedy shall be to terminate the Agreement upon Licensee returning the Data and Related Materials to ESRI with a copy of Licensee's invoice/receipt and ESRI returning the license fees paid to Licensee. IN NO EVENT SHALL ESRI AND/OR ITS LICENSOR(S) BE LIABLE FOR COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOST PROFITS, LOST SALES, OR BUSINESS EXPENDITURES, INVESTMENTS, OR COMMITMENTS IN CONNECTION WITH ANY BUSINESS; LOSS OF ANY GOODWILL; OR FOR ANY INDIRECT, SPECIAL, INCIDENTAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT OR USE OF THE DATA AND RELATED MATERIALS, HOWEVER CAUSED, ON ANY THEORY OF LIABILITY, AND WHETHER OR NOT ESRI OR ITS LICENSOR(S) HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THESE LIMITATIONS SHALL APPLY NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF ANY EXCLUSIVE REMEDY. Third Party Beneficiary: ESRI's licensor(s) has (have) authorized ESRI to (sub)distribute and (sub)license its (their) data as incorporated into the Data and Related Materials. As an intended third party beneficiary to this Agreement, the ESRI licensor(s) is (are) entitled to directly enforce, in its own name, the rights and obligations undertaken by the Licensee and to seek all legal and equitable remedies as are afforded to ESRI. In the event that the data vendor(s) has (have) granted the end user permission to redistribute the Geodata, please use proper proprietary or copyright attribution for the various data vendor(s), and provide the associated metadata file(s) with the Geodata. In compliance with FGDC metadata standards, ESRI has attempted to practice proper metadata methodologies by providing any data source information, descriptions, and file names to assist in this effort.</SPAN></P></DIV></DIV></DIV>See use constraints.Access granted to Licensee only.ESRI ArcCatalog 8.1.3.679true-124.407325-114.13177242.00934232.534152ground condition: 200111, 2000; publication date: 2001Largest scale when displaying the data: 1:100,000.No duplicate features are present.After processing, the data set is checked for drawing display and number of records and file sizes compared with source materials.The geospatial part of this data set was extracted from the 2000 Census Version TIGER/Line™ files (CD–ROM edition). To improve the accuracy, GDT ran a process against the entire nationwide database. It was generalized to 1,000 points per polygon and 4,000 points per feature. Generalizing reduced the positional accuracy and can't be determined.
The positional accuracy of the TIGER/Line coordinates varies with the source materials used but at best meets the established National Map Accuracy standards (+/- 167 feet approximately) where 1:100,000-scale maps from the USGS are the source. The Census Bureau cannot specify the accuracy of feature updates added by its field staff or of features derived from the GBF/DIME-Files or other map sources. Thus, the level of positional accuracy in the TIGER/Line files is not suitable for high-precision measurement applications such as engineering problems, property transfers, or other uses that might require highly accurate measurements of the earth's surface.Attribute and geospatial data100000Dynamap/ZIP Code Boundary & Inventory Files v10.0GDT Dynamap/ZIP Code Boundary & Inventory Files v10.02002-01Version 10.0Geographic Data Technology, Inc.Geographic Data Technology, IncLebanon, New Hampshire, USAvector digital dataDynamap®/ZIP Code Boundary & Inventory Filesv10.0ground condition2001-11Attribute data2000 Census of Population and Housing Public Law 94-171Census 94-17120002000Department of Commerce, Census BureauDepartment of Commerce, Census BureauUSACensus of Population and Housing Public Law 94-1712000ground condition2000Attribute dataTotpop_cy (attribute)ESRI BIS2001ESRI Business Information SolutionsESRI Business Information SolutionsVienna, Virginia, USApublication date2001How GDT Creates These Files: Creating ZIP Code Areas is a technical process that carefully coordinates United States Postal Service (USPS) postal data and our own Dynamap street data. The U.S. Post Office assigns ZIP Codes on a street-by-street basis. ZIP code areas are used by the USPS to deliver mail more effectively. Their purpose was never intended to form boundaries for spatial analysis. As a result, GDT formed the following processes to build boundaries from the mail stops present on street segments. By utilizing a wide variety of sources, GDT is able to locate ZIP code changes both large and small and change the representation of ZIP Code areas by redefining the boundaries.
Aligning ZIP Code Zones & Street Segments: The ZIP boundaries are created manually by following actual Dynamap street segments and other non-street features. In areas where the street name match rate is low, GDT technicians make telephone inquiries to area Post Offices, and refer to USPS ZIP+4 State Directories, to determine the predominant ZIP Code. The ZIP Code delivery "zone" is approximated, and ZIP boundaries are created manually by following Dynamap street and non-street segments.
U.S. ZIP Code Areas have been generalized to 1,000 points per polygon and 4,000 points per feature.2002-01GDT Dynamap/ZIP Code Boundary & Inventory Files v10.0The following steps were performed by ESRI for Data & Maps 2002: Extracted state ZIP Code geography from GDT Dynamap/ZIP Code Boundary & Inventory Files. Converted Hawaii to North American Datum of 1983 (NAD83). Appended the states into one national data set. Added Pop2001 attribute from ESRI Business Information Solutions. Added Area attribute and recalculated Sumblkpop attribute by summing Census Block centroids defined by the Census Bureau from the Public Law 94-171 population files that fall within each ZIP Code area. Removed unnecessary attributes and reformatted all attributes. Divided into individual states. Created ArcView legend file (.avl), ArcGIS™ layer file (.lyr) file, projection file (.prj), and spatial indices.2002-02-10GDT Dynamap/ZIP Code Boundary & Inventory Files v10.0Census 94-171ESRI BIS
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