U.S. Census Grids

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Summary File 1: Metropolitan Statistical Areas, 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 1), 1990: Metropolitan Statistical Areas
Edition: 1.00
Geospatial Data Presentation Form: raster
Series Information:
Series Name:
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/H4PK0D3B
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Description:
Abstract:
The U.S. Census Grids (Summary File 1), 1990: Metropolitan Statistical Areas data set contains grids of demographic and socioeconomic data from the year 1990 U.S. census in ASCII andGeoTIFF formats for 39 metropolitan statistical areas with at least one million in population. The grids have a resolution of 7.5 arc-seconds (0.002075 decimal degrees), or approximately 250 square meters. 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 age, race, ethnicity, and housing, for metropolitan statistical areas at a finer resolution than is available in the 30 arc-second grids used for the United States as a whole.
Supplemental Information:
Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 19900401
Time of Day:
Currentness Reference:
publication date
Status:
Progress: Complete
Maintenance and Update Frequency: As needed
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -124.000000
East Bounding Coordinate: -65.000000
North Bounding Coordinate: 47.000000
South Bounding Coordinate: 17.000000
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Keywords:
Theme:
Theme Keyword Thesaurus: SEDAC Theme
Theme Keyword: Population
Theme Keyword: Urban
Theme:
Theme Keyword Thesaurus: Data Granularity
Theme Keyword: City
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: 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: Illinois
Place Keyword: Indiana
Place Keyword: Kansas
Place Keyword: Kentucky
Place Keyword: Louisiana
Place Keyword: Maryland
Place Keyword: Massachusetts
Place Keyword: Michigan
Place Keyword: Minnesota
Place Keyword: Missouri
Place Keyword: New Jersey
Place Keyword: New Hampshire
Place Keyword: New York
Place Keyword: North Carolina
Place Keyword: Ohio
Place Keyword: Oregon
Place Keyword: Pennsylvania
Place Keyword: South Carolina
Place Keyword: Tennessee
Place Keyword: Texas
Place Keyword: Utah
Place Keyword: Virginia
Place Keyword: Washington
Place Keyword: West Virginia
Place Keyword: Wisconsin
Place:
Place Keyword Thesaurus: Populated Places
Place Keyword: Akron
Place Keyword: Anaheim
Place Keyword: Boston
Place Keyword: Brazonia
Place Keyword: Buffalo
Place Keyword: Charlotte
Place Keyword: Chicago
Place Keyword: Cincinnati
Place Keyword: Clearwater
Place Keyword: Cleveland
Place Keyword: Dallas
Place Keyword: Denver
Place Keyword: Detroit
Place Keyword: Fall River
Place Keyword: Galveston
Place Keyword: Gary
Place Keyword: Gastonia
Place Keyword: Hartford
Place Keyword: Houston
Place Keyword: Lake County
Place Keyword: Lawrence
Place Keyword: Long Island
Place Keyword: Lorain
Place Keyword: Los Angeles
Place Keyword: Miami
Place Keyword: Middletown
Place Keyword: Milwaukee
Place Keyword: Minneapolis
Place Keyword: New Britain
Place Keyword: New York
Place Keyword: Newport News
Place Keyword: Norfolk
Place Keyword: Northern New Jersey
Place Keyword: Oakland
Place Keyword: Pawtucket
Place Keyword: Philadelphia
Place Keyword: Pittsburgh
Place Keyword: Portland
Place Keyword: Providence
Place Keyword: Riverside
Place Keyword: Rock Hill
Place Keyword: Salem
Place Keyword: Salt Lake City
Place Keyword: San Francisco
Place Keyword: San Jose
Place Keyword: Seattle
Place Keyword: St. Petersburg
Place Keyword: Tampa
Place Keyword: Trenton
Place Keyword: Virginia Beach
Place Keyword: Wilmington
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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)
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:
Browse Graphic:
Browse Graphic File Name: https://sedac.ciesin.columbia.edu/downloads/maps/usgrid/usgrid-summary-file1-1990-msa/sedac-logo.jpg
Browse Graphic File Description:
Browse Graphic File Type: JPEG
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Cross Reference:
Citation Information:
Originator: Seirup, L., and G. Yetman
Publication Date: 20060531
Publication Time:
Title:
U.S. Census Grids (Summary File 1), 2000: Metropolitan Statistical Areas
Edition: 1.00
Geospatial Data Presentation Form: raster, map, map service
Series Information:
Series Name:
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/H46H4FBC
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Data Quality Information:

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Process Description:
1. The 1990 SF1 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 SF1 fields are combined as specified in the variable documentation to create the variables being gridded. 3. The SF1 variables are joined to the tiger coverages and the census blocks in a given metropolitan statistical area are selected. The density of each variable is calculated for each census block. 4. A 7.5 arc-second fishnet is created and unioned with the census block coverage. 5. 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. 6. 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. 7. 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: 0.002075
Longitude Resolution: 0.002075
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_90SF1MSA
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:
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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).
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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-file1-1990-msa/data-download
Access Instructions:
Data accessible via the data set landing page.
Online Computer and Operating System:
Digital Form:
Digital Transfer Information:
Format Name: GeoTIFF
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File Decompression Technique: Unzip
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Computer Contact Information:
Network Address:
Network Resource Name: https://sedac.ciesin.columbia.edu/data/set/usgrid-summary-file1-1990-msa/data-download
Access Instructions:
Data accessible via the data set landing page.
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Beginning Date: 20130517
Beginning Time:
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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