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1990 County Boundaries of the United States
Entry ID: UTC_1990countyboundaries

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Abstract: This data set portrays the 1990 State and county boundaries of the United
States, Puerto Rico, and the U.S. Virgin Islands. The data set was created by
extracting county polygon features from the individual 1:2,000,000-scale State
boundary Digital Line Graph (DLG) files produced by the U.S. Geological Survey.
These files were then merged into a single file and the boundaries were
modified to what they were in 1990. This is a revised version of the March
2000 data set.
Related URL
Description: Metadata in Biological Data Profile format.
Geographic Coverage
Spatial coordinates   
  N: 76.63   S: 13.71   E: -61.48   W: -177.1

Data Set Citation
Dataset Originator/Creator: U.S. Geological Survey
Dataset Title: 1990 County Boundaries of the United States
Dataset Release Date: 02/2001
Dataset Release Place: Reston, Virginia
Dataset Publisher: U.S. Geological Survey
Online Resource:
Temporal Coverage
Start Date: 1972-01-01
Stop Date: 1990-12-31
Data Resolution
Latitude Resolution: 0.000278 degrees
Longitude Resolution: 0.000278 degrees
ISO Topic Category
Quality This data set includes county boundaries for all 50 States, Puerto Rico, and
the U.S. Virgin Islands. Data completeness generally reflects the content of
the original DLG files. The data set was checked for topological consistency
using the Arc/INFO command BUILD. No other checks for logical consistency were
performed on this data set.
Access Constraints None
Use Constraints None. Acknowledgment of the National Atlas of the United States of America and
(or) the U.S. Geological Survey would be appreciated in products derived from
these data.
Data Set Progress
Data Center
National Geospatial Programs Office, U.S. Geological Survey, U.S. Department of the Interior Supplemental Info
Data Center URL:

Data Center Personnel
Email: atlasmail at
Contact Address:
National Atlas
U.S. Geological Survey
508 National Center
12201 Sunrise Valley Drive
City: Reston
Province or State: Virginia
Postal Code: 20192
Country: USA

Data Center Personnel
Fax: 303-202-4742
Email: sponce at
Contact Address:
Box 25046, Denver Federal Center Mail Stop 150
City: Denver
Province or State: CO
Postal Code: 80225-0046
Country: USA
Distribution Media: CD-ROM
Fees: There is no charge for the online option. $45.00 per disc.
Phone: 703-648-5175
Email: atlasmail at
Contact Address:
U.S. Geological Survey
521 National Center
City: Reston
Province or State: Virginia
Postal Code: 20192
Country: USA
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Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2003-03-31
Last DIF Revision Date: 2016-11-18
Future DIF Review Date: 2004-03-28
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