Identification_Information:  
	Citation:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network (CIESIN)
			Publication_Date:  1996
			Title:  Archive of Census Related Products (ACRP): 1990 ZIP Equivalency Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  http://sedac.ciesin.columbia.edu/data/set/acrp-zip-code-equivalency-1990
	Description:  
		Abstract:  The 1990 Zip Equivalency Files portion of the Archive of Census Related Products (ACRP) contains population and housing data derived from the U.S. Census Bureau's 1990 STF3B header file. The data are available at the census block and census blockgroup levels, and encompass 5-digit zip codes, POLygon IDentification (POLID) block fields that correspond to the POLID of the Tiger-based boundary file, and population centroids. This portion of the ACRP is produced by the Center for International Earth Science Information Network (CIESIN).
		Purpose:  To provide population and housing data for the U.S.
		Supplemental_Information:  The STF3B header file data are visible through the Geographic Correspondence Engine (GeoCorr) application at http://plue.sedac.ciesin.columbia.edu/plue/geocorr/.
	Time_Period_of_Content:  
		Time_Period_Information:  
			Single_Date/Time:  
				Calendar_Date:  19900401
	Status:  
		Progress:  Complete
		Maintenance_and_Update_Frequency:  As needed
	Spatial_Domain:  
		Bounding_Coordinates:  
			West_Bounding_Coordinate:  -180.000000
			East_Bounding_Coordinate:  -66.000000
			North_Bounding_Coordinate:  72.000000
			South_Bounding_Coordinate:  18.000000
	Keywords:  
		Theme:  
			Theme_Keyword_Thesaurus:  EI Gateway Vocabulary
			Theme_Keyword:  Population
		Theme:  
			Theme_Keyword_Thesaurus:  Data Granularity
			Theme_Keyword:  County
			Theme_Keyword:  State
		Theme:  
			Theme_Keyword_Thesaurus:  CSA-NBII Biocomplexity
			Theme_Keyword:  Census
			Theme_Keyword:  Housing
			Theme_Keyword:  Human Populations
			Theme_Keyword:  Infrastructure
			Theme_Keyword:  Zoning
		Theme:  
			Theme_Keyword_Thesaurus:  CIESIN Indexing Vocabulary Version 2.1 (GCMD Format)
			Theme_Keyword:  CIESIN > Environmental Protection > Land Use > Zoning
			Theme_Keyword:  CIESIN > Population Dynamics > Demographic Characteristics > Population Distribution
			Theme_Keyword:  CIESIN > Population Dynamics > Demographic Characteristics > Population Size
		Theme:  
			Theme_Keyword_Thesaurus:  GCMD Parameter Valids
			Theme_Keyword:  EARTH SCIENCE > Human Dimensions > Boundaries > Administrative Divisions
			Theme_Keyword:  EARTH SCIENCE > Human Dimensions > Boundaries > Political Divisions
			Theme_Keyword:  EARTH SCIENCE > Human Dimensions > Population > Population Distribution
			Theme_Keyword:  EARTH SCIENCE > Human Dimensions > Population > Population Size
		Theme:  
			Theme_Keyword_Thesaurus:  General
			Theme_Keyword:  Census
			Theme_Keyword:  Census Blockgroups
			Theme_Keyword:  Census Blocks
			Theme_Keyword:  Housing Units
			Theme_Keyword:  POLID
			Theme_Keyword:  TIGER
			Theme_Keyword:  Zip Codes
		Theme:  
			Theme_Keyword_Thesaurus:  SEDAC Topic
			Theme_Keyword:  Population
		Theme:  
			Theme_Keyword_Thesaurus:  ISO Topic
			Theme_Keyword:  Boundaries
			Theme_Keyword:  Society
		Place:  
			Place_Keyword_Thesaurus:  CIESIN Location Terms, version 2.0
			Place_Keyword:  Region > Equatorial
			Place_Keyword:  Region > Mid-Latitude
			Place_Keyword:  Continent > North America
			Place_Keyword:  Region > Polar
			Place_Keyword:  Country > United States
	Access_Constraints:  None
	Use_Constraints:  Users are free to use, copy, distribute, transmit, and adapt the work for commercial and non-commercial purposes, without restriction, as long as clear attribution of the source is provided.
	Point_of_Contact:  
		Contact_Information:  
			Contact_Organization_Primary:  
				Contact_Organization:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Contact_Address:  
				Address_Type:  mailing and physical address
				Address:  CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
				City:  Palisades
				State_or_Province:  NY
				Postal_Code:  10964
				Country:  USA
			Contact_Voice_Telephone:  +1 845-365-8920
			Contact_Facsimile_Telephone:  +1 845-365-8922
			Contact_Electronic_Mail_Address:  ciesin.info@ciesin.columbia.edu
	Data_Set_Credit:  ACRP was originally developed through the collaborative efforts of John Blodgett, Urban Information Center/Office of Computing, University of Missouri, and Henk Meij, a former employee of CIESIN.
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network (CIESIN)
			Publication_Date:  1996
			Title:  Archive of Census Related Products (ACRP): 1990 Summary Tape File (STF1B)
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  http://sedac.ciesin.columbia.edu/data/set/acrp-summary-tape-file-stf1b-1990
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network (CIESIN)
			Publication_Date:  1996
			Title:  Archive of Census Related Products (ACRP): 1980 SAS Transport Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  http://sedac.ciesin.columbia.edu/data/set/acrp-sas-transport-1980
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network (CIESIN)
			Publication_Date:  1996
			Title:  Archive of Census Related Products (ACRP): 1990 SAS Transport Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  http://sedac.ciesin.columbia.edu/data/set/acrp-sas-transport-1990
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network (CIESIN)
			Publication_Date:  1996
			Title:  Archive of Census Related Products (ACRP): 1992 Boundary Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  vector
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  http://sedac.ciesin.columbia.edu/data/set/acrp-boundary-1992
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network (CIESIN)
			Publication_Date:  1996
			Title:  Archive of Census Related Products (ACRP): 1990 Census Block Statistics
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  http://sedac.ciesin.columbia.edu/data/set/acrp-census-block-stats-1990
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network (CIESIN)
			Publication_Date:  1996
			Title:  Archive of Census Related Products (ACRP): 1990 Enhanced Migration Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  http://sedac.ciesin.columbia.edu/data/set/acrp-enhanced-migration-1990
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network (CIESIN)
			Publication_Date:  1996
			Title:  Archive of Census Related Products (ACRP): 1990 Public Use Microdata Sample Areas (PUMA) Boundary Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  vector
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  http://sedac.ciesin.columbia.edu/data/set/acrp-public-use-microdata-sample-areas-boundary-1990
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network (CIESIN)
			Publication_Date:  1996
			Title:  Archive of Census Related Products (ACRP): 1990 Standard Extract Files
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  http://sedac.ciesin.columbia.edu/data/set/acrp-standard-extract-1990
	Cross_Reference:  
		Citation_Information:  
			Originator:  Center for International Earth Science Information Network (CIESIN)
			Publication_Date:  1996
			Title:  Archive of Census Related Products (ACRP): 1990 Street Intersections
			Edition:  1.00
			Geospatial_Data_Presentation_Form:  tabular
			Publication_Information:  
				Publication_Place:  Saginaw, MI
				Publisher:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Online_Linkage:  http://sedac.ciesin.columbia.edu/data/set/acrp-street-intersections-1990
Data_Quality_Information:  
	Lineage:  
		Source_Information:  
			Source_Contribution:  These data are derived from the United States Census Bureau Census of Population and Housing from 1990.
	Cloud_Cover:  0
Distribution_Information:  
	Distributor:  
		Contact_Information:  
			Contact_Organization_Primary:  
				Contact_Organization:  NASA Socioeconomic Data and Applications Center (SEDAC)
			Contact_Address:  
				Address_Type:  mailing and physical address
				Address:  CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
				City:  Palisades
				State_or_Province:  NY
				Postal_Code:  10964
				Country:  USA
			Contact_Voice_Telephone:  +1 845-365-8920
			Contact_Facsimile_Telephone:  +1 845-365-8922
			Contact_Electronic_Mail_Address:  ciesin.info@ciesin.columbia.edu
	Resource_Description:  CIESIN_SEDAC_ACRP_1990_ZIPEF
	Distribution_Liability:  CIESIN follows procedures designed to ensure that data disseminated by CIESIN are of reasonable quality. If, despite these procedures, users encounter apparent errors or misstatements in the data, they should contact SEDAC User Services at +1 845-365-8920 or via email at ciesin.info@ciesin.columbia.edu. Neither CIESIN nor NASA verifies or guarantees the accuracy, reliability, or completeness of any data provided. CIESIN provides this data without warranty of any kind whatsoever, either expressed or implied. CIESIN shall not be liable for incidental, consequential, or special damages arising out of the use of any data provided by CIESIN.
	Standard_Order_Process:  
		Ordering_Instructions:  The data in Comma Separated Value (CSV) and SAS Transport (XPT) formats are available from the NASA Socioeconomic Data and Applications Center (SEDAC).
	Standard_Order_Process:  
		Digital_Form:  
			Digital_Transfer_Information:  
				Format_Name:  XPT, CSV
				File_Decompression_Technique:  Unzip
			Digital_Transfer_Option:  
				Online_Option:  
					Computer_Contact_Information:  
						Network_Address:  
							Network_Resource_Name:  http://sedac.ciesin.columbia.edu/data/set/acrp-zip-code-equivalency-1990/data-download
					Access_Instructions:  Data accessible via FTP.
	Available_Time_Period:  
		Time_Period_Information:  
			Single_Date/Time:  
				Calendar_Date:  1996
Metadata_Reference_Information:  
	Metadata_Date:  19950621
	Metadata_Review_Date:  20130724
	Metadata_Future_Review_Date:  20140724
	Metadata_Contact:  
		Contact_Information:  
			Contact_Organization_Primary:  
				Contact_Organization:  Center for International Earth Science Information Network (CIESIN) Metadata Administration
			Contact_Address:  
				Address_Type:  mailing and physical address
				Address:  CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
				City:  Palisades
				State_or_Province:  NY
				Postal_Code:  10964
				Country:  USA
			Contact_Voice_Telephone:  +1 845-365-8988
			Contact_Facsimile_Telephone:  +1 845-365-8922
			Contact_Electronic_Mail_Address:  metadata@ciesin.columbia.edu
	Metadata_Standard_Name:  FGDC Content Standards for Digital Geospatial Metadata
	Metadata_Standard_Version:  FGDC-STD-001-1998
	Metadata_Time_Convention:  local time