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Time Zone: Williamson County lies in the Central Time Zone (CST/CDT) and observes daylight saving time.

The community of Georgetown is the Seat for Williamson County.

Williamson County was founded in 1848 and was created by taking area from MilamCounty.

From the Census Estimates for 2009, <1> Williamson had a population of 410,686 people. This is an increase of 64.3% since the last Census (which gave a population of 249,967 people in 2000).

At the time of the 2000 Census, Williamson represented 1.2% of the total population of Texas, making it the state's 16th most populous county (out of 254 counties).

The following table shows the recent changes in population. Other than 2000, the population counts have been estimated by the Census Bureau.

Since 2000
Year-to-Year Change
2010422,679+69.09%+2.92% since 2009
2009410,686+64.3%+3.93% since 2008
2008395,146+58.08%+5.87% since 2007
2000249,967The Last Census

More information can be found on the Williamson County Census Page for Williamson County.


Below are some of the communities located in Williamson County (for more communities, please visit our Nearby Page for Williamson County):

Community 2009
(2009vs. 2000)
Georgetown   50,89128,33979.6% increase  
Taylor   16,10613,57518.64% increase  
Hutto   14,2321,2501,038% increase  
Liberty Hill   1,4671,4094.12% increase  
Granger   1,3731,2995.7% increase  

Websites for Williamson County

Official Website:   www.wilco.org/

If you know of a history or genealogy society whose interest includes Williamson County, would you please send us the URL for their website? We would like to add their link to our Gazetteer. To contact us, please visit our Feedback Page.

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Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2000 Census and the next count will be for the 2010 Census.

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<2>All Quarter-dollar coin images from the United States Mint.

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