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"Maps, Air Photo & Geospatial Systems Forum" <[log in to unmask]>
Subject:
MAPS-L: Zip code center Points
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"Angie Cope, AGSL" <[log in to unmask]>
Date:
Fri, 16 Dec 2005 12:15:02 -0600
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Subject:        Zip code center Points
Date:   Fri, 16 Dec 2005
From:   Kathy Stroud <[log in to unmask]>
To:     Maps and Air Photo Systems Forum <[log in to unmask]>,
Discussion of Government Document Issues <[log in to unmask]>



Hi,

I have patron looking for Historic (1970s and 1980s) data giving the latitude and longitude of zip code center points (nationwide).  The Census Bureau has 1990 and 1999 data available. Any other leads? Alternatively, we could use a polygon GIS file and ArcGIS to calculate the ceterpoints.  I'm not even sure this data exists, but any help you can provide will be greatly appreciated.

Thanks,

Kathy Stroud, Map/GIS Librarian
Government Information and Maps
Peter J. Shields Library
100 NW Quad
Davis, California 95616-5292
(530) 752-5248



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