GIS Data Catalog

Williamson County makes a variety of GIS data available to the public. The table below is our online catalog, and most of data are available for immediate download. Other data must be requested via our request form, and still others are linked from other agencies that provide data for Williamson County.

For more information about a data set, please click the metadata link under the data column. If you have questions or need additional information, please feel free to contact us.

All of the data provided by Williamson County will be in ESRI Shapefile format. The files will be in a zipped folder (.ZIP file extension) to conserve bandwidth. Information is provided below on the file formats used and software programs that may be used to access this data.

The datasets below are free of charge to download.  Please be aware that there is a fee for creating data, copying to media (DVD) and GIS analysis.  Please see the charges for public maps and data below.

Click Here for Charges for Public Maps and Data


Williamson County GIS Data Catalog

 

DATA
PREVIEW POSTED LINK
Addresses
Description:
Addressed structures and property
More Information:
Metadata
Data Type: Point
Data Preview Image
01/13/2017 Download Shapefile
Alcohol Rights Boundaries (Wet/Dry)
Description:
Alcohol-related rights areas
More Information:
Metadata
Data Type: Polygon
Wet/Dry Preview 09/07/2012 Contact
Aquifers
Description:
Major Aquifer zones
More Information:
Metadata
Data Type: Polygon
Aquifers Preview
09/07/2012 Download Shapefile
Census 2000 Block Groups
Description:
US Census 2000 Block Group areas
More Information:
Metadata
Data Type: Polygon
Census 2000 Block Group Preview
09/07/2012 Download Shapefile
Census 2010 Block Groups
Description: US Census 2010 Block Group Area
More Information: Metadata
Data Type: Polygon
 

09/07/2012

 
Census 2000 Blocks
Description:
US Census 2000 Block areas
More Information:
Metadata
Data Type: Polygon
Data Preview Image
09/07/2012

Download Shapefile

Census 2010 Blocks
Description: US Census 2010 Block areas
More Information: Metadata
Data Type: Polygon
 

09/07/2012

 
Census 2000 Tracts
Description:
US Census 2000 Tract areas
More Information:
Metadata
Data Type: Polygon
Data Preview Image
09/07/2012 Download Shapefile
Census 2010 Tracts
Description: US Census 2010 Tract areas
More Information:
Metadata
Data Type: Polygon
 

09/07/2012

 
City Limits
Description:
City boundary polygons for incorporated Cities
More Information:
Metadata
Data Type: Polygon
Data Preview Image
01/13/2017

Download Shapefile

County Boundary
Description:
County area
More Information:
Metadata
Data Type: Polygon
Data Preview Image
09/07/2012

Download Shapefile

County Office Locations
Description:
County office locations
More Information:

Data Type: Point
No Preview Available 09/07/2012

Contact

County Owned Properties
Description:
County owned properties
More Information:

Data Type: Polygon
No Preview Available 09/07/2012 Contact
Emergency Services Districts (ESDs)
Description:
Boundaries of Emergency Services Districts, which are taxing entities that contract for fire services. This data is maintained by the Williamson Central Appraisal District (WCAD).
More Information:

Data Type: Polygon
 
Direct Download WCAD GIS Data Downloads
FEMA Flood Hazard Areas
Description:
FEMA Floodplain and flood zones for all of Williamson County.
More Information:
Metadata
Data Type: Polygon
FEMA Flood Preview 09/26/2008

Download Shapefile

Historical Markers
Description:
Location of historical markers
More Information:

Data Type: Point
No Preview Available 09/07/2012 Contact
Lakes
Description:
Major lakes and ponds
More Information:
Metadata
Data Type: Polygon
Data Preview Image
09/07/2012

Download Shapefile

LiDAR Elevation Data
Description: Elevation data in 1.4 Meter LAS files
Data Type: LAS
Tile Boundaries for LiDAR
Description: Tile boundaries for the 2006 LiDAR elevation data in .shp, .dwg, and .pdf file format. Can be used to locate tile names for a data request. 
Data Type: Polygon
No Preview Available 08/01/2014 View Grid

Download Grid

Request
MUD Boundaries
Description:
Municipal Utility District areas. This data is maintained by the Williamson Central Appraisal District (WCAD).
More Information:

Data Type: Polygon
Data Preview Image
09/07/2012 WCAD GIS Data Downloads
Parks and Open Spaces
Description:
County and city parks and open spaces
More Information:
Metadata
Data Type: Polygon
Data Preview Image
01/13/2017

Download Shapefile

Polling Place Locations
Description:
Polling locations for the the current (or next) election
More Information:

Data Type: Point
No Preview Available
09/07/2012
Elections Info
Precincts
Description: JP, Commissioner, Constable Precincts
More Information: Metadata
Data Type: Polygon
Data Preview Image
09/07/2012

Download Shapefile

Rivers and Streams
Description: Major rivers and streams
More Information: Metadata
Data Type: Line
Data Preview Image
09/07/2012

Download Shapefile

Roads
Description: Road centerlines for all public roads
More Information: Metadata
Data Type: Line
Roads preview image
01/13/2017

Download Shapefile

School District Boundaries
Description: School Districts inside the County
More Information:
Data Type: Polygon
Data Preview Image
09/07/2012 WCAD GIS Data Downloads
Soil Classifications
Description: Generalized soil types
More Information: Metadata
Data Type: Polygon
Data Preview Image
09/07/2012

Download Shapefile

Trail Locations
Description: Recreational trail locations in the County represented as a line feature with names.
More Information: Metadata
Data Type: Line
Data Preview Image
01/13/2017 Download Shapefile
Vegetation Classifications
Description: Generalized natural vegetation classifications.
More Information: Metadata
Data Type: Polygon
Data Preview Image
09/07/2012 Download Shapefile
Parcels
Description: Parcels are NOT maintained by Williamson County. They are maintained by the Williamson Central Appraisal District (WCAD), a separate entity from the County. Please visit their site to view an interactive parcel map or to request data.
No Preview Available 09/07/2012 

WCAD GIS Data Downloads




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File Format Information

Shapefile Information:
Description of the File format: Wikipedia
Technical Documentation of Shapefile: ESRI White Paper (PDF link)

ZIP File Information:
The ZIP format is a compressed version of files and data in a single "package" format that makes it easy to transfer. Many software packages can open ZIP format files, including many operating systems. There are many freely available programs, so we have selected a good one at random: ALZip from ALTools (Windows) (Freeware).

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Using GIS Data

Williamson County GIS data can be used natively or imported into a variety of commercial programs. To name the most popular:

In addition to the commercial software, there are some free resources for interacting with our GIS data. At this time Williamson County cannot provide support or assistance for using our data with these products, but there are a number of good guides and tutorials available on the internet.

 

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Data Disclaimer

The maps and data on this site are for general planning purposes only. The underlying basemap conforms to National Map Accuracy Standards in unobstructed areas. Williamson County makes no warranty, representation or guarantee as to the content, sequence, accuracy, timeliness or completeness of any of the database information or spatial locations depicted. Furthermore, all warranties on merchantability and fitness for a particular purpose are hereby disclaimed. In no event shall Williamson County be liable to the recipient or any other party for damages of any type, including but not limited to incidental, consequential or exemplary damages arising out of the use or inability to use these materials.

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Inner Loop Annex
GIS Department

301 SE Inner Loop
, Suite 107
Georgetown, TX 78626
Phone: (512) 943-3707
Driving Directions


Directions:
Download PDF Map

Business Hours:

8am to 5pm Monday - Friday


Click here
for full contact information.

General Questions/Inquiries
GIS Staff
gis@wilco.org

GeorgeStrebel
GIS Manager
gstrebel@wilco.org
(512) 943-1474

Teresa Baker
Addressing
tbaker@wilco.org
(512) 943-3707
Addressing Page

Chris Davis
Elections Administrator
cjdavis@wilco.org
(512) 943-1630
Elections Page

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Williamson County Courthouse
710 Main Street Georgetown, TX 78626
Main Telephone: (512)943-1100
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