U.S. Census Grids

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Summary File 3, v1 (1990)

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Identification Information:

Citation:
Citation Information:
Originator: Seirup, L., G. Yetman, and L. Razafindrazay
Publication Date: 20130517
Publication Time:
Title:
U.S. Census Grids (Summary File 3), 1990
Edition: 1.00
Geospatial Data Presentation Form: raster
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Issue Identification:
Publication Information:
Publication Place: Palisades, NY
Publisher: NASA Socioeconomic Data and Applications Center (SEDAC)
Other Citation Details:
Online Linkage: https://doi.org/10.7927/H4JS9NC2
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Description:
Abstract:
The U.S. Census Grids (Summary File 3), 1990 data set contains grids of demographic and socioeconomic data from the year 1990 U.S. census in ASCII and GeoTIFF formats. The grids have a resolution of 30 arc-seconds (0.0083 decimal degrees), or approximately 1 square km. The gridded variables are based on census block geography from Census 1990 TIGER/Line Files and census variables (population, households, and housing variables). This data set is produced by the Columbia University Center for International Earth Science Information Network (CIESIN).
Purpose:
To provide gridded demographic data, including characteristics of income, education, and housing, for the United States for data integration.
Supplemental Information:
Time Period of Content:
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Single Date/Time:
Calendar Date: 19900401
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Status:
Progress: Complete
Maintenance and Update Frequency: As needed
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -180.000000
East Bounding Coordinate: -65.000000
North Bounding Coordinate: 72.000000
South Bounding Coordinate: 17.000000
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Keywords:
Theme:
Theme Keyword Thesaurus: SEDAC Theme
Theme Keyword: Population
Theme:
Theme Keyword Thesaurus: Data Granularity
Theme Keyword: Country
Theme:
Theme Keyword Thesaurus: ISO Topic
Theme Keyword: Boundaries
Theme Keyword: Society
Theme:
Theme Keyword Thesaurus: GCMD Science Keywords, Version 8.6
Theme Keyword: EARTH SCIENCE > HUMAN DIMENSIONS > POPULATION
Place:
Place Keyword Thesaurus: CIESIN Location Terms, Version 3.1
Place Keyword: United States of America
Place:
Place Keyword Thesaurus: U.S. States and Territories
Place Keyword: Alabama
Place Keyword: Alaska
Place Keyword: Arizona
Place Keyword: Arkansas
Place Keyword: California
Place Keyword: Colorado
Place Keyword: Connecticut
Place Keyword: Delaware
Place Keyword: District of Columbia
Place Keyword: Florida
Place Keyword: Georgia
Place Keyword: Hawaii
Place Keyword: Idaho
Place Keyword: Illinois
Place Keyword: Indiana
Place Keyword: Iowa
Place Keyword: Kansas
Place Keyword: Kentucky
Place Keyword: Louisiana
Place Keyword: Maine
Place Keyword: Maryland
Place Keyword: Massachusetts
Place Keyword: Michigan
Place Keyword: Minnesota
Place Keyword: Mississippi
Place Keyword: Missouri
Place Keyword: Montana
Place Keyword: Nebraska
Place Keyword: Nevada
Place Keyword: New Hampshire
Place Keyword: New Jersey
Place Keyword: New Mexico
Place Keyword: New York
Place Keyword: North Carolina
Place Keyword: North Dakota
Place Keyword: Ohio
Place Keyword: Oklahoma
Place Keyword: Oregon
Place Keyword: Pennsylvania
Place Keyword: Rhode Island
Place Keyword: South Carolina
Place Keyword: South Dakota
Place Keyword: Tennessee
Place Keyword: Texas
Place Keyword: Utah
Place Keyword: Vermont
Place Keyword: Virginia
Place Keyword: Washington
Place Keyword: West Virginia
Place Keyword: Wisconsin
Place Keyword: Wyoming
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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)
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Contact Address:
Address Type: mailing and physical address
Address:
CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
City: Palisades
State or Province: New York
Postal Code: 10964
Country: United States
Contact Voice Telephone: +1 845-365-8920
Contact TDD/TTY Telephone:
Contact Facsimile Telephone: +1 845-365-8922
Contact Electronic Mail Address: ciesin.info@ciesin.columbia.edu
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Browse Graphic:
Browse Graphic File Name: https://sedac.ciesin.columbia.edu/downloads/maps/usgrid/usgrid-summary-file3-1990/sedac-logo.jpg
Browse Graphic File Description:
Browse Graphic File Type: JPEG
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Citation Information:
Originator: Seirup, L., and G. Yetman
Publication Date: 20060531
Publication Time:
Title:
U.S. Census Grids (Summary File 3), 2000
Edition: 1.00
Geospatial Data Presentation Form: raster, map, map service
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Issue Identification:
Publication Information:
Publication Place: Palisades, NY
Publisher: NASA Socioeconomic Data and Applications Center (SEDAC)
Other Citation Details:
Online Linkage: https://doi.org/10.7927/H42R3PMN
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Process Description:
1. The 1990 SF3 files for each state are loaded into Microsoft Access and queries are used to extract the records pertaining to census blocks and the fields being used for gridding.<BR> 2. The SF3 fields are combined as specified in the variable documentation to create the variables being gridded. 3. For all states, except Hawaii, the 1990 TIGER/Line files are converted to ArcInfo coverages using the ArcInfo command TIGERTOOL. For Hawaii, a census block shapefile is downloaded from the Hawaii Statewide GIS Program web site at http://www.hawaii.gov/dbedt/gis/download.htm and converted to an ArcInfo coverage. The Hawaii state shapefile is used because the U.S. Census tiger data for Hawaii does not use the NAD 83 datum and the Census Bureau does not specify what regional datum is used for Hawaii. The Hawaii state shapefile has been converted to NAD 83. 4. The SF3 block group data are proportionately allocated to census blocks using an appropriate variable from the Summary File 1 data. For instance, the residents in the block group with a high school degree are allocated to the block using the population age 25 and older from SF1 data. 5. The SF3 counts assigned to each census block are joined to the tiger coverages. The density of each variable is calculated for each census block. 6. A 30 arc-second fishnet is created and unioned with the census block coverage. 7. The area in square kilometers is calculated for each area of intersection. The total count for each variable is calculated by multiplying the area in square kilometers in each area of intersection by the density of that variable in the underlying census block. 8. The total count for each grid cell is calculated by aggregating the variable counts for each area of intersection that falls within that grid cell. 9. The fishnet grid for each variable is converted to raster format.
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Spatial Data Organization Information:

Indirect Spatial Reference Method:
Direct Spatial Reference Method: Raster
Raster Object Information:
Raster Object Type: Grid Cell
Row Count: 3000
Column Count: 1200
Vertical Count: 1
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Spatial Reference Information:

Horizontal Coordinate System Definition:
Geographic:
Latitude Resolution: 0.008300
Longitude Resolution: 0.008300
Geographic Coordinate Units: Decimal degrees
Geodetic Model:
Horizontal Datum Name: North American Datum of 1983
Ellipsoid Name: Geodetic Reference System 80
Semi-major Axis: 6378137.000000
Denominator of Flattening Ratio: 298.257000
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Distribution Information:

Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: NASA Socioeconomic Data and Applications Center (SEDAC)
Contact Person:
Contact Position:
Contact Address:
Address Type: mailing and physical address
Address:
CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
City: Palisades
State or Province: New York
Postal Code: 10964
Country: United States
Contact Voice Telephone: +1 845-365-8920
Contact TDD/TTY Telephone:
Contact Facsimile Telephone: +1 845-365-8922
Contact Electronic Mail Address: ciesin.info@ciesin.columbia.edu
Hours of Service:
Contact Instructions:
Resource Description: CIESIN_SEDAC_USCG_90SF3
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.
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Fees: 0
Ordering Instructions:
The data in Georeferenced Tagged Image File Format (.tif), and American Standard Code for Information Interchange (.asc) formats are available from the NASA Socioeconomic Data and Applications Center (SEDAC).
Turnaround:
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Digital Form:
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Format Name: ASCII
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File Decompression Technique: Unzip
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Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file3-1990/data-download
Access Instructions:
Data accessible via the data set landing page.
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Format Name: GeoTIFF
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File Decompression Technique: Unzip
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Network Address:
Network Resource Name: https://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file3-1990/data-download
Access Instructions:
Data accessible via the data set landing page.
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Beginning Date: 20130517
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Ending Date: Present
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Metadata Reference Information:

Metadata Date: 20120313
Metadata Review Date: 20220831
Metadata Future Review Date:
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Center for International Earth Science Information Network (CIESIN) Metadata Administration
Contact Person:
Contact Position:
Contact Address:
Address Type: mailing and physical address
Address:
CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
City: Palisades
State or Province: New York
Postal Code: 10964
Country: United States
Contact Voice Telephone: +1 845-365-8988
Contact TDD/TTY Telephone:
Contact Facsimile Telephone: +1 845-365-8922
Contact Electronic Mail Address: metadata@ciesin.columbia.edu
Hours of Service:
Contact Instructions:
Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time
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