Western Geographic Science Center


Data and Maps

2000 Population Density

San Francisco Bay Area Results

Download : Raw Data - ARCGRID FORMAT

1990 Dasymetric Data- San Francisco Bay Area (4 MB)

2000 Dasymetric Data- San Francisco Bay Area (4 MB)

Download : Maps-PDF Format

1990 Dasymetric Map - San Francisco Bay Area (2.5 MB)

2000 Dasymetric Map - San Francisco Bay Area (2.5 MB)

New Release: Dasymetric Mapping Tool – ArcGIS10x (BETA version)-Increased Run Time

NEW RELEASE: ArcGIS 10 Toolbox (Python)

Download Zip File of Dasymetric Mapping Tool

* Running the tool on datasets of various sizes will impact Run Times. Testing has been done and latest version has vastly improved run times (**SEE BELOW)


  • Population Data with 10,000 records = 2 Hours


  • Population Data with 10,000 records = 10 Minutes


  • Make sure your input datasets are all using the same coordinate and projection information
  • Tool runs more efficiently with ArcGRID files
  • Your Ancillary Raster Land Use file should be in a thematic format, NOT continuous.

Previously Released Versions

USGS Disclaimers

References to non USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.

The furnished computer programs and scripts are accepted and used by the recipient individual or group entity with the express understanding that the United States Government makes no warranties, expressed of implied, concerning the accuracy, completeness, reliability, usability, or suitability for any particular purpose of the information or data contained in the programs, or furnished in connection therewith, and the United States shall be under no liability whatsoever to any such individual or group entity by reason of use thereof.


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Page Last Modified: Friday, 07-Apr-2017 17:23:31 EDT